CN107797154B

CN107797154B - Method and device for scaling electrical imaging logging image

Info

Publication number: CN107797154B
Application number: CN201710866241.8A
Authority: CN
Inventors: 冯周; 武宏亮; 李宁; 王克文; 冯庆付; 李雨生
Original assignee: Petrochina Co Ltd
Current assignee: Petrochina Co Ltd
Priority date: 2017-09-22
Filing date: 2017-09-22
Publication date: 2019-04-12
Anticipated expiration: 2037-09-22
Also published as: CN107797154A

Abstract

The application provides an electrical imaging logging image calibration method and device. The method comprises the following steps: acquiring electrical imaging logging information of a well section to be analyzed, and acquiring an electrical imaging logging image according to the electrical imaging logging information; calculating the average current I of the electric imaging logging corresponding to different depth points in the well section to be analyzed according to the electric imaging logging image; constructing a response function between the average current I of the electric imaging logging and the conventional logging shallow resistivity according to the average current I of the electric imaging logging and the conventional logging information acquired in advance; calculating the average current II of depth windows corresponding to different depth windows in the well section to be analyzed according to the response function and the electric imaging logging image; calculating scale coefficients corresponding to different depth windows according to the average current II of the depth windows and conventional logging information; and scaling the electrical imaging logging image according to the scaling coefficient. The apparatus may be used to perform the above method. By utilizing the embodiments in the application, the accuracy of the electric imaging logging image scales can be improved, and the processing efficiency of logging data can be improved.

Description

A kind of electric imaging logging image scale method and device

Technical field

The application belongs to electric imaging logging data processing technology field more particularly to a kind of electric imaging logging image is carved Spend method and device.

Background technique

Electric imaging logging is the imaging logging method being most widely used at present, in complex lithology and unconventional reservoir oil gas It is played an important role in exploration.Since the button electrode system used on electric imaging logging instrument is non-focusing electrode system, survey Amount response is substantially the opposite variation of borehole wall resistivity of media.When carrying out RESERVOIR INTERPRETATION evaluation using electric imaging logging data It need to be demarcated, that is, utilize conventional shallow resistivity log scale image.How by electric imaging logging image into Row accurate calibration is basis and the key for influencing electric imaging logging data quantitative assessment precision.

In the prior art, electric imaging logging resistivity scale is there are mainly two types of method: one is being based on man-machine interactively scale, Conventional logging shallow resistivity curve and electric imaging logging image average current curve are projected i.e. in cross plot, pass through friendship Mutual mode determines scale imaging logging image after the two response variation function.This method scale effect and explanation Personnel Skill Levels Correlation, heavy workload are unfavorable for computer automation processing, simultaneously because full well section is masked not using unified function scale With the difference of Reservoir Section fluid properties, the accuracy of electric imaging logging image scale is reduced, influences quantitative computational accuracy.It is another Kind of method is point-by-point scale, by counting electric imaging logging image average current and conventional shallow electric with corresponding depth point by depth window Values of resistivity comparison, obtains scale electric imaging logging image after the calibration factor of each depth window, but due to different size of Electrical imaging It is not constant, simple proportionate relationship between logging current and the response of conventional resistive rate, will cause using this method scale larger Error.Therefore, the accuracy for how improving electric imaging logging image scale becomes technical problem urgently to be resolved.

Summary of the invention

The application is designed to provide a kind of electric imaging logging image scale method and device, and it is average to obtain electric imaging logging Receptance function between electric current one and conventional logging shallow resistivity, function, obtains the corresponding scale of different depth window according to response Coefficient carries out the scale of electric imaging logging image, improves the accuracy of electric imaging logging image scale.

On the one hand this application provides a kind of electric imaging logging image scale methods, comprising:

The electric imaging logging data for acquiring well section to be analyzed obtains electric imaging logging map according to the electric imaging logging data Picture；

The corresponding electric imaging logging of different depth point in the well section to be analyzed is calculated according to the electric imaging logging image Average current one；

The Conventional Logs obtained according to the electric imaging logging average current one and in advance construct the Electrical imaging and survey Receptance function between well average current one and conventional logging shallow resistivity；

According to the receptance function and the electric imaging logging image, different depth window pair in the well section to be analyzed is calculated The depth window average current two answered；

According to the depth window average current two and the Conventional Logs, the corresponding scale system of different depth window is calculated Number；

Scale is carried out to the electric imaging logging image according to the calibration factor.

Further, described according to one He of electric imaging logging average current in another embodiment of the method The Conventional Logs obtained in advance construct the sound between the electric imaging logging average current one and conventional logging shallow resistivity Answer function, comprising:

The electric imaging logging average current one is divided into predetermined quantity electric current section；

The conventional logging corresponding with the electric current section of electric imaging logging average current one in the electric current section is shallow Resistivity carries out Function Fitting, obtains the different corresponding interval functions in the electric current section；

According to the interval function, construct between the electric imaging logging average current one and conventional logging shallow resistivity Piecewise function, using the piecewise function as the receptance function.

Further, in another embodiment of the method, the Function Fitting includes: double-log straight line least square Fitting.

Further, in another embodiment of the method, the interval function includes linear equation function, according toCalculate the linear equation letter Several coefficients；

In above formula, a, b indicate the coefficient of the linear equation function；Sn indicates that the electric imaging logging average current one exists The quantity of depth point in the electric current section；Indicate the corresponding conventional logging shallow resistivity in i-th of depth point； Indicate the corresponding electric imaging logging average current one in i-th of depth point.

Further, described according to the receptance function and the electric imaging logging image, calculate the well section to be analyzed The depth window average current two of middle different depth window, comprising:

According toCalculate institute State the corresponding depth window average current two of different depth window in well section to be analyzed；

In above formula, I_aver(depth) the depth window average current two is indicated；n_jIndicate depth point in the depth window Quantity；n_kIndicate the pole plate number of electric imaging logging instrument；n_lIndicate the button electrode number on the electric imaging logging instrument pole plate Mesh；I_image(j, k, l) indicates the electricity that k-th of pole plate, first of button electrode in the depth window at j-th of depth point measure Flow valuve；A (j, k, l), b (j, k, l) indicate k-th of pole plate, first of button electrode in the depth window at j-th of depth point The coefficient of the corresponding receptance function.

Further, described according to the depth window average current two and described in another embodiment of the method Conventional Logs calculate the corresponding calibration factor of the depth window, comprising:

According to C (depth)=1000/RS (depth)/I_aver(depth) the corresponding calibration factor of the depth window is calculated；

In above formula, C (depth) indicates the corresponding calibration factor of the depth window；RS (depth) indicates the normal of corresponding depth Rule well logging shallow resistivity value；I_aver(depth) the depth window average current two is indicated.

Further, described that the Electrical imaging is surveyed according to the calibration factor in another embodiment of the method Borehole image carries out scale, comprising:

According to I_scaled(j, k, l)=C (depth) I_image(j, k, l) is to the electric imaging logging image in different depth window Carry out scale；

In above formula, I_scaled(j, k, l) indicates k-th of pole plate, first of button in the depth window at j-th of depth point Current value after the corresponding scale of electrode；C (depth) indicates the corresponding calibration factor of the depth window；I_image(j, k, l) is indicated The current value of k-th of pole plate, first of button electrode measurement in the depth window at j-th of depth point.

Further, described according to electric imaging logging image calculating in another embodiment of the method The corresponding electric imaging logging average current one of different depth point in well section to be analyzed, comprising:

According to the electric imaging logging image, utilizeDescribed in calculating Electric imaging logging image calculates the corresponding electric imaging logging average current one of different depth point in the well section to be analyzed；

In above formula,Indicate the electric imaging logging average current one at the position depth point s；n_kIndicate electric imaging logging instrument The pole plate number of device；n_lIndicate the pole plate upper button electrode number of electric imaging logging instrument；I_image(s, k, l) indicates the depth point The current value of k-th of pole plate, first of button electrode measurement at the position s.

On the other hand, this application provides a kind of electric imaging logging image graduation apparatus, comprising:

Image generation module of logging well is surveyed for acquiring the electric imaging logging data of well section to be analyzed according to the Electrical imaging Well data obtains electric imaging logging image；

One computing module of average current, it is different in the well section to be analyzed for being calculated according to the electric imaging logging image The corresponding electric imaging logging average current one in depth point；

Receptance function obtains module, the conventional logging for obtaining according to the electric imaging logging average current one and in advance Data constructs the receptance function between the electric imaging logging average current one and conventional logging shallow resistivity；

Two computing module of average current, for according to the receptance function and the electric imaging logging image, described in calculating The corresponding depth window average current two of different depth window in well section to be analyzed；

Calibration factor computing module, for calculating according to the depth window average current two and the Conventional Logs The corresponding calibration factor of different depth window；

Image calibration block, for carrying out scale to the electric imaging logging image according to the calibration factor.

Further, in another embodiment of described device, the receptance function obtains module and is specifically used for:

Further, in another embodiment of described device, the receptance function obtains the Function Fitting in module It include: double-log straight line least square fitting.

Further, in another embodiment of described device, the interval function includes linear equation function, correspondingly, The receptance function obtains module and is specifically used for basisCalculate the linear equation letter Several coefficients；

In above formula, a, b indicate the coefficient of the linear equation function；Sn indicates the average current in the electric current section The quantity of interior depth point；Indicate the corresponding conventional logging shallow resistivity in i-th of depth point；Indicate i-th of depth The corresponding electric imaging logging average current one of point.

Further, in another embodiment of described device, two computing module of average current is specifically used for:

In above formula, I_aver(depth) the depth window average current two is indicated；n_jIndicate depth point in the depth window Quantity；n_kIndicate the pole plate number of electric imaging logging instrument；n_lIndicate the button electrode number on the electric imaging logging instrument pole plate Mesh；I_image(j, k, l) indicates the electricity that k-th of pole plate, first of button electrode in the depth window at j-th of depth point measure Flow valuve；A (j, k, l), b (j, k, l) indicate k-th of pole plate, first of button electrode in the depth window at j-th of depth point The coefficient of the corresponding linear equation function.

Further, in another embodiment of described device, the calibration factor computing module is specifically used for:

Further, in another embodiment of described device, described image scale unit is specifically used for:

Further, in another embodiment of described device, one computing module of average current is specifically used for: according to institute Electric imaging logging image is stated, is utilizedCalculate the electric imaging logging image Calculate the corresponding electric imaging logging average current one of different depth point in the well section to be analyzed；

In above formula,Indicate the electric imaging logging average current one at the position depth point s；n_kIndicate electric imaging logging instrument The pole plate number of device；n_lIndicate the pole plate upper button electrode number of electric imaging logging instrument；I_image(s, k, l) indicates depth point s Set k-th of pole plate at place, the current value of first of button electrode measurement.

In another aspect, present invention also provides a kind of electric imaging logging image graduation apparatus, comprising: processor and be used for The memory of storage processor executable instruction, the processor realize that above-mentioned electric imaging logging image is carved when executing described instruction Degree method.

Electric imaging logging image scale method and device provided by the present application can calculate different according to electric imaging logging image The corresponding electric imaging logging average current one in depth point, for conventional logging shallow resistivity and electric imaging logging average current one Response characteristic proposes segmentation automatic Matching Method, obtains the corresponding interval function in different electric current sections.It realizes to conventional survey Well shallow resistivity responds accurately portraying for changing rule with electric imaging logging average current one, is subsequent carry out electric imaging logging map As scale provides accurate theoretical basis.Meanwhile the application can be average by obtaining the depth window of electric imaging logging image Electric current two obtains the corresponding calibration factor of different depth window, carries out the point-by-point scale of different calibration factors.No longer be using electricity at As simple proportionate relationship between well logging average current one and conventional logging shallow resistivity, electric imaging logging image scale is carried out, Reduce the error of graduation, effectively increase the precision of electric imaging logging image scale, improves electric imaging logging image scale Accuracy.In addition, the application establishes a set of electric imaging logging image resistivity scale automatic calculating method and process, Ke Yishi The automatic processing of existing electric imaging logging image scale, can be obviously improved the treatment effeciency of well-log information.

Detailed description of the invention

In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, to embodiment or will show below There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this The some embodiments recorded in application, for those of ordinary skill in the art, in the premise of not making the creative labor property Under, it is also possible to obtain other drawings based on these drawings.

Fig. 1 is a kind of a kind of method flow signal of embodiment of electric imaging logging image scale method provided by the present application Figure；

Fig. 2 is that electric imaging logging average current one and the fitting of conventional logging shallow resistivity are illustrated in a kind of embodiment of the application Figure；

Fig. 3 is electric imaging logging image scale effect diagram in a kind of embodiment of the application；

Fig. 4 is a kind of modular structure schematic diagram of embodiment of electric imaging logging image graduation apparatus provided by the present application；

Fig. 5 is the modular structure schematic diagram of another electric imaging logging image graduation apparatus embodiment provided by the present application.

Specific embodiment

In order to make those skilled in the art better understand the technical solutions in the application, below in conjunction with the application reality The attached drawing in example is applied, the technical scheme in the embodiment of the application is clearly and completely described, it is clear that described implementation Example is merely a part but not all of the embodiments of the present application.Based on the embodiment in the application, this field is common The application protection all should belong in technical staff's every other embodiment obtained without creative efforts Range.

Electric imaging logging technology can be used for identifying lithology, analyze sedimentary structure, identification crack etc., use Electrical imaging skill When art is logged well, it can use electric imaging logging instrument and obtain electric imaging logging image.It include multiple poles in electric imaging logging instrument Plate and button electrode can be used to record the log data at different well depths.The electric imaging logging that electric imaging logging instrument obtains It may include the log datas such as corresponding current value at different well depths in image, it can be with by the analysis to electric imaging logging image Obtain the structural information etc. of reservoir.But the button electrode system used on electric imaging logging instrument is non-focusing electrode system, measurement Response is substantially the opposite variation of borehole wall resistivity of media.And when carrying out RESERVOIR INTERPRETATION evaluation, it is desirable that borehole wall medium Actual resistivity value, rather than opposite variation.Therefore, embodiment provided herein can will be in electric imaging logging image The value of resistivity demarcated, as electric imaging logging image scale.

Fig. 1 is a kind of a kind of method flow signal of embodiment of electric imaging logging image scale method provided by the present application Figure, as shown in Figure 1, electric imaging logging image scale method provided by the present application includes:

The electric imaging logging data of S1, acquisition well section to be analyzed obtain Electrical imaging according to the electric imaging logging data and survey Borehole image.

Specifically, by acquiring the electric imaging logging data of well section to be analyzed, Ke Yigen in one embodiment of the application Electric imaging logging image is obtained according to collected electric imaging logging data.Electric imaging logging data may include electric imaging logging instrument The initial measurement data that device is acquired from underground such as includes: the shape of current value at different depth position, electric imaging logging instrument State, the orientation of pole plate and inclination angle etc..Collected electric imaging logging data can be handled, obtain electric imaging logging map Picture.Such as: electric imaging logging data can be carried out to velocity correction, acceleration correction, equalization correction etc., can use simultaneously Electric imaging logging data and Conventional Logs are carried out depth by well-log information edit tool (such as: forward Logging Software) The pretreatment such as alignment.By the pretreatment to electric imaging logging data can obtain reflection the stratum borehole wall electrically change two dimension at As image, i.e. electric imaging logging image.

S2, the corresponding Electrical imaging survey of different depth point in the well section to be analyzed is calculated according to the electric imaging logging image Well average current one.

Specifically, it after getting electric imaging logging image, is calculated according to electric imaging logging image different in well section to be analyzed The corresponding electric imaging logging average current one in depth point.Depth point refers in well section to be analyzed at different depth position, Electrical imaging Logger can collect the data at different depth point.Electric imaging logging instrument may include more at same depth location A pole plate and button electrode.At i.e. same depth location, multiple current values, same depth in electric imaging logging image may be collected Multiple current values may be corresponding at degree point.Multiple electric currents according to electric imaging logging image, at available same depth point Value, according to the current value of acquisition, can obtain the electric imaging logging average current one at the depth point.Different depth point, it is corresponding Different Electrical imaging average current values.

In one embodiment provided by the present application, according to the electric imaging logging image, following formula (1) meter can use Calculate the corresponding electric imaging logging average current one of different depth point in well section to be analyzed:

In above formula,It can indicate the electric imaging logging average current one at the position s of depth point；n_kCan indicate electricity at As the pole plate number of logger；n_lIt can indicate the pole plate upper button electrode number of electric imaging logging instrument；I_image(s, k, l) can To indicate the current value of k-th of pole plate at the position s of depth point, first of button electrode measurement, I_image(s, k, l) can pass through Electric imaging logging image obtains.Certainly, above-mentioned formula (1) is a kind of embodiment, can also be carried out as needed to formula (1) Deformation or transformation, the application are not especially limited.

S3, the Conventional Logs obtained according to the electric imaging logging average current one and in advance, obtain the electricity at As the receptance function between well logging average current one and conventional logging shallow resistivity.

Specifically, it according to electric imaging logging image, can be obtained at well section different depth point to be analyzed using formula (1) Electric imaging logging average current one is averaged it is of course also possible to use other methods obtain the electric imaging logging at different depth point Electric current one, the application is not especially limited.Conventional Logs described in the present embodiment may include: gamma ray log, The well-log informations such as resistivity logging, density, neutron, sound wave, Conventional Logs can also include other surveys as needed certainly Well data, the application are not especially limited.The value that conventional logging shallow resistivity can be obtained according to Conventional Logs, by right Conventional logging shallow resistivity and the corresponding electric imaging logging average current one of different depth point are analyzed, and electric imaging logging is constructed Receptance function between average current one and conventional logging shallow resistivity.It specifically can use table or image analysis conventional logging Changing rule between shallow resistivity and the corresponding electric imaging logging average current one of different depth point constructs receptance function.

Such as: it can use table or Functional Analysis conventional logging shallow resistivity and the corresponding Electrical imaging of different depth point surveyed Changing rule between well average current one presets conventional logging shallow resistivity and difference according to the changing rule that analysis obtains Functional relation between the corresponding electric imaging logging average current one in depth point.Further according to conventional logging shallow resistivity and Electrical imaging The specific value of well logging draw electric current, is adjusted preset functional relation, obtains receptance function.It is of course also possible to use Other modes obtain the receptance function between electric imaging logging average current one and conventional logging shallow resistivity, such as function is intended Legal etc., the application is not especially limited.Response letter between electric imaging logging average current one and conventional logging shallow resistivity Number can reflect variation tendency and rule between electric imaging logging average current one and conventional logging resistivity response.

S4, according to the receptance function and the electric imaging logging image, calculate different depth in the well section to be analyzed The corresponding depth window average current two of window.

Specifically, depth window can refer to the range of the certain depth intervals of well section to be analyzed, such as: take 0.125 meter of conduct The interval of one depth intervals, it may be considered that 5000m-5000.125m, 5000.125m-5000.250m respectively correspond two Depth window.It may include multiple depth points in each depth window, such as: 5000.0025,5000.0050.5000.0075 is belonged to Depth point in depth window 5000m-5000.125m.It is shallow according to the electric imaging logging average current one and conventional logging that get Receptance function and electric imaging logging image between resistivity can calculate the corresponding depth window average current of different depth window Two, further obtain the relationship between the electric imaging logging average current one at conventional shallow resistivity and different depth position.Example Such as: according to electric imaging logging image, the current value of the corresponding electric imaging logging in depth point in each depth window can be obtained.It can be with It is corresponding to depth point in depth window using the receptance function between electric imaging logging average current one and conventional logging shallow resistivity Current value be modified.The corresponding depth window average current two of different depth window is obtained according to revised current value, each Depth window may correspond to different depth window average currents two.

Electric imaging logging average current one is usually direct linear averaging, it is therefore an objective to obtain electricity by the statistics of full well section Variation tendency and rule between average current and conventional logging the shallow resistivity response of imaging logging image.The average electricity of depth window Stream two further calculates acquisition on the basis of electric imaging logging average current one.Depth window average current two may be considered According to the changing rule between electric imaging logging average current one and conventional shallow resistivity, to electric imaging logging average current one Further amendment.Depth window average current two can more accurately reflect at different depth position, what electric imaging logging obtained Relationship between current value and conventional logging resistivity provides accurate data basis for the scale of electric imaging logging image.

S5, according to the depth window average current two and the Conventional Logs, calculate different depth window corresponding quarter Spend coefficient.

Specifically, after getting the corresponding depth window average current two of different depth window, according to depth window average current two And Conventional Logs, calculate the corresponding calibration factor of different depth window.The corresponding calibration factor of different depth window can be more quasi- The relationship between electric imaging logging average current one and conventional logging shallow resistivity in true reflection different depth window.

S6, scale is carried out to the electric imaging logging image according to the calibration factor.

Specifically, electric imaging logging image scale includes that the current value that electric imaging logging instrument measures is converted to stratum electricity Resistance rate is referred to as electric imaging logging calibration.After getting the corresponding calibration factor of different depth window, according to the quarter got It spends coefficient and scale is carried out to electric imaging logging image.Such as: it may include multiple depth points in depth window, if electric imaging logging is adopted It is divided into 0.0025m between sample, then then may include 50 Electrical imagings in a depth window using 0.125 meter of depth intervals as interval The depth point of well logging.Judgement needs the corresponding depth window of different depth point in the electric imaging logging image of scale, further obtains Calibration factor corresponding to the corresponding depth window of different depth point, it can get the corresponding calibration factor of different depth point. Using the achievement of the current value calibration factor corresponding with depth point of electric imaging logging instrument corresponding at depth point measurement as electricity Current value after imaging logging image scale.Certainly other methods can also be used, complete electric imaging logging using calibration factor The scale of image, the application are not especially limited.

Electric imaging logging image scale method provided by the present application, according to collected electric imaging logging data and routine Well-log information gets the receptance function between electric imaging logging average current one and conventional logging shallow resistivity, and further The corresponding depth window average current two of different depth window is obtained according to the receptance function got, according to depth window average current two The corresponding calibration factor of different depth window is obtained, the scale of electric imaging logging image is finally completed according to calibration factor.It realizes Electric imaging logging average current one is accurately portrayed with conventional logging change in resistance rule, further improves electric imaging logging The accuracy of image scale.

On the basis of the above embodiments, the routine obtained according to the electric imaging logging average current one and in advance Well-log information constructs the receptance function between the electric imaging logging average current one and conventional logging shallow resistivity, comprising:

Specifically, it gets in well section to be analyzed after the corresponding electric imaging logging average current one of different depth point, at this Apply in one embodiment, the electric imaging logging average current one that will acquire is divided into predetermined quantity electric current section, can be with N number of electric current section, i.e. (- ∝, I are divided into according to the range of electric imaging logging average current one₁]、(I₁, I₂]、(I₂, I₃]…… (I_N-1, I_N].Certainly, specific division mode and the number in electric current section can be arranged according to the actual situation, and the application does not make It is specific to limit.Such as: if the minimum value of the corresponding electric imaging logging average current one of different depth point is in one embodiment 0.2, maximum value 35, can be divided by the size distribution of one value of electric imaging logging average current [0.2,1], (1,5], (5, 10], (10,35] four electric current sections, it certainly can also be using other division modes.By electric imaging logging average current stroke After being divided into predetermined quantity electric current section, by different electric current sections electric imaging logging average current one and electric current section in it is each The corresponding conventional logging shallow resistivity in depth point carries out Function Fitting, obtains the corresponding interval function in different electric current sections.It will not With electric current section corresponding interval function be combined obtain electric imaging logging average current one and conventional logging shallow resistivity it Between piecewise function, can be using the piecewise function of acquisition as the reflection electric imaging logging average current one and shallow resistance of conventional logging The receptance function of response pattern between rate.

In the application one embodiment, double-log straight line least square fitting method can be used in different electric current sections Corresponding with the electric current section depth point the Nei Ge conventional logging shallow resistivity of electric imaging logging average current one carry out Function Fitting. Logarithm can be all taken to electric imaging logging average current one and conventional logging shallow resistivity, and least square method is recycled to carry out function Fitting.The corresponding interval function in different electric current sections can be obtained, the form of interval function can be linear equation such as: y=ax+ B, in formula, y can indicate that conventional logging shallow resistivity electric imaging logging average current one, x can indicate that electric imaging logging is average Electric current one, a, b indicate the coefficient of linear equation.

In the application one embodiment, can according to the following formula (2) obtain electric imaging logging average current one with it is right The coefficient for the interval function between conventional logging shallow resistivity answered, interval function include linear equation function, it can according to The linear equation between formula (2) calculating electric imaging logging average current one and corresponding conventional logging shallow resistivity is as follows Number:

In above formula, a, b can indicate the coefficient of linear equation function；Sn can indicate that electric imaging logging average current one exists The quantity of depth point in corresponding current section, what electric imaging logging average current one was located at electric current section may include multiple depths Point is spent, such as: to calculating current section (I_s-1, I_s] corresponding linear equation coefficient, electric imaging logging average current one In electric current section (I_s-1, I_s] depth point have 5500m, 5500.00254m, 5600m, 5600.00254m, then electric current section (I_s-1, I_s] in may include 4 depth points, sn=4；It can indicate the corresponding routine in i-th of depth point in electric current section Well logging shallow resistivity；It can indicate the corresponding electric imaging logging average current one in i-th of depth point in electric current section,It can use above-mentioned formula (1) acquisition.Certainly, above-mentioned formula (2) is a kind of embodiment, can also be right as needed Formula (2) is deformed or is converted, and the application is not especially limited.

Fig. 2 is that electric imaging logging average current one and the fitting of conventional logging shallow resistivity are illustrated in a kind of embodiment of the application Figure, as shown in Fig. 2, in the application one embodiment, by electric imaging logging average current one be divided into [0.2,1], (1,5], (5, 10], (10,35] four electric current sections.To the conventional logging shallow resistivity and the average electricity of electric imaging logging in each electric current section Stream one carries out double-log straight line least square fitting by formula (2), obtains the corresponding interval function in 4 electric current sections.4 each areas Between function be combined obtain a piecewise function, i.e., between electric imaging logging average current one and conventional logging shallow resistivity Receptance function.For fitting result as shown in Fig. 2, being divided into 4 straightways, i.e., each electric current section corresponds to the section of a linear equation Function, 4 interval functions are combined into a piecewise function.

Electric imaging logging image scale method provided by the present application, can use double-log straight line least square method will be different The corresponding electric imaging logging average current one in electric current section and conventional logging shallow resistivity are fitted, and obtain each electric current section Corresponding interval function.Interval function is combined, it is available to entire well section electric imaging logging average current to be analyzed Piecewise function between one and conventional logging shallow resistivity, i.e. electric imaging logging average current one and conventional logging shallow resistivity it Between receptance function.The application utmostly describes full well section routine shallow resistivity response and electric imaging logging with piecewise function Non-linear change tendencies between average current one realize the response changing rule between electric imaging logging and conventional logging It accurately portrays, provides accurate data basis for subsequent progress electric imaging logging image scale, improve electric imaging logging map As the accuracy of scale.

In the application one embodiment, get between electric imaging logging average current one and conventional logging shallow resistivity Receptance function function after, according to the receptance function and electric imaging logging image got, can calculate in well section to be analyzed not The corresponding depth window average current two with depth window.Depth window average current two can be calculated by depth window, it specifically can root It is calculated according to following formula (3):

In above formula, I_aver(depth) depth window average current two can be indicated；n_jIt can indicate depth in corresponding depth window The quantity of point；n_kIt can indicate the pole plate number of electric imaging logging instrument；n_lIt can indicate the button on electric imaging logging instrument pole plate Electrode number；I_image(j, k, l) can indicate k-th of pole plate, first of button electricity in corresponding depth window at j-th of depth point The current value of pole measurement；A (j, k, l), b (j, k, l) can indicate k-th of pole plate in depth window at j-th of depth point, l The coefficient of the corresponding receptance function of a button electrode, specifically can be and calculates the linear equation obtained using above-mentioned formula (2) Coefficient a, b.Certainly, above-mentioned formula (3) is a kind of embodiment, can also formula (3) be deformed or be converted as needed, The application is not especially limited.

Such as: in the application one embodiment, if in well section to be analyzed including 100 depth windows, in each depth window It is corresponding with 50 depth points, i.e. n_j=50, each depth point can be corresponding with multiple pole plates and button electrode.According to practical need It wants, obtains the pole plate number and button electrode number in electric imaging logging instrument, it can obtain n_kAnd n_lValue.It is of course also possible to every The quantity of depth point in a depth window is not identical, and the application is not especially limited.Further according to electric imaging logging image, obtain each The current value that corresponding pole plate, button electrode are measured at a depth point, it can obtain I_imageThe value of (j, k, l).It can root According to the I of acquisition_imageThe value of (j, k, l) judges the corresponding electric current section in depth point, may further be obtained using above-mentioned formula (2) Obtain the coefficient of the corresponding linear equation in electric current section, it can obtain the value of a (j, k, l), b (j, k, l).Further, it is possible to The corresponding depth window average current two of 100 depth windows is calculated using above-mentioned formula (3).

In a kind of embodiment provided by the present application, after getting the corresponding depth window average current two of each depth window, It can be calculated each according to the depth window average current two obtained and Conventional Logs such as conventional logging shallow resistivity value is calculated The corresponding calibration factor of depth window.Specifically the corresponding calibration factor of each depth window can be calculated by following formula (4):

C (depth)=1000/RS (depth)/I_aver(depth) (4)

In above formula, C (depth) can indicate the corresponding calibration factor of depth window；RS (depth) can indicate corresponding depth Conventional logging shallow resistivity value, the conventional logging shallow resistivity value where RS (depth) can be depth window in depth intervals Average value, can be obtained by conventional shallow resistivity log；I_aver(depth) it can indicate that corresponding depth window is average Electric current two can be calculated by formula (3) and be obtained.Certainly, above-mentioned formula (4) is a kind of embodiment, can also be as needed Formula (4) is deformed or converted, the application is not especially limited.

In the application one embodiment, after obtaining the corresponding calibration factor of each depth window, according to the quarter for calculating acquisition It spends coefficient and scale is carried out to electric imaging logging image, the depth point for needing scale can be specifically calculated by following formula (5) Current value after scale:

I_scaled(j, k, l)=C (depth) I_image(j,k,l) (5)

In above formula, I_scaled(j, k, l) can indicate k-th of pole plate in corresponding depth window at j-th of depth point, first Current value after the corresponding scale of button electrode；C (depth) can indicate to need the corresponding calibration factor of depth window of scale, It can be calculated and be obtained by above-mentioned formula (4)；I_image(j, k, l) can indicate to need j-th of depth point in the depth window of scale The current value that k-th of pole plate at place, first of button electrode measure.Certainly, above-mentioned formula (5) is a kind of embodiment, can be with Formula (5) is deformed or converted as needed, the application is not especially limited.

Such as: in the application one embodiment, electric imaging logging image can be divided into 100 depth windows, each 50 depth points are corresponding in depth window, each depth point can be corresponding with multiple pole plates and button electrode.It can be according to above-mentioned After formula (1), (2), (3), (4) calculate the corresponding calibration factor of each depth window of acquisition, using above-mentioned formula (5) to Electrical imaging The depth point of each scale carries out scale in well logging image.Such as: obtaining the 1st corresponding calibration factor of depth window, then obtain the 1st In a depth window, the current value of the 1st depth point the 1st button electrode of the 1st pole plate measurement.By the current value of measurement and the 1st The product of the corresponding calibration factor of a depth window is as in the 1st depth window after scale, the 1st pole plate the 1st of depth point the 1st The corresponding current value of a button electrode, completes the scale of the depth point.Electric imaging logging image can be carried out by the method Scale.

Fig. 3 is electric imaging logging image scale effect diagram in a kind of embodiment of the application, first in Fig. 3 IMAGE.OUT indicates that electric imaging logging image before scale, second IMAGE.SCALED indicate electric imaging logging image after scale, Third road is the electric imaging logging image resistivity calculated and conventional logging resistivity contrasts schematic diagram, and OHMM indicates resistance in figure The unit of rate.Dark colour solid line is electric imaging logging image resistivity (the imaging logging electricity after scale after scale in third road figure Resistance rate), light colour solid line is conventional logging shallow resistivity.From figure 3, it can be seen that the electric imaging logging image after scale no matter It is in change in resistance trend or numerically to have good consistency with conventional logging resistivity, to demonstrate this Shen Please technical solution reliability.

Electric imaging logging image scale method provided by the present application is flat for conventional logging shallow resistivity and electric imaging logging The response characteristic of equal electric current one, proposes segmentation automatic Matching Method, realizes accurately portraying to the two response changing rule, It lays a good foundation for subsequent scale.Meanwhile the depth window average current two by obtaining electric imaging logging image, obtain different depths The corresponding calibration factor of window is spent, the point-by-point scale of different calibration factors is carried out, effectively increases electric imaging logging image scale Precision improves the accuracy of electric imaging logging image scale.In addition, the application establishes a set of electric imaging logging image resistance Rate scale automatic calculating method and process may be implemented computer and automatically process, and can be obviously improved the processing of well-log information Efficiency.

Based on user's web project data processing method described above, this specification one or more embodiment is also provided A kind of web project data processing equipment.The device may include the system for having used this specification embodiment the method (including distributed system), software (application), module, component, server, client etc. simultaneously combine the necessary dress for implementing hardware It sets.Based on same innovation thinking, for example following implementation of the device in one or more embodiments that this specification embodiment provides Described in example.Since the implementation that device solves the problems, such as is similar to method, the reality of the specific device of this specification embodiment The implementation that may refer to preceding method is applied, overlaps will not be repeated.Used below, term " unit " or " module " can To realize the combination of the software and/or hardware of predetermined function.Although device described in following embodiment is preferably come with software It realizes, but the realization of the combination of hardware or software and hardware is also that may and be contemplated.

Specifically, Fig. 4 is that a kind of modular structure of embodiment of electric imaging logging image graduation apparatus provided by the present application is shown It is intended to, as shown in figure 4, electric imaging logging image graduation apparatus provided herein includes: well logging image generation module 41, puts down One computing module 42 of equal electric current, receptance function obtain module 43, two computing module 44 of average current, calibration factor computing module 45, image calibration block 46.

Well logging image generation module 41, can be used for acquiring the electric imaging logging data of well section to be analyzed, according to the electricity Image Logging Data obtains electric imaging logging image.

One computing module 42 of average current can be used for calculating the well section to be analyzed according to the electric imaging logging image The corresponding electric imaging logging average current one of middle different depth point.

Receptance function obtains module 43, can be used for obtaining according to the electric imaging logging average current one and in advance normal Well-log information is advised, the receptance function between the electric imaging logging average current one and conventional logging shallow resistivity is constructed.

Two computing module 44 of average current can be used for according to the receptance function and the electric imaging logging image, meter Calculate the corresponding depth window average current two of different depth window in the well section to be analyzed.

Calibration factor computing module 45 can be used for being provided according to the depth window average current two and the conventional logging Material calculates the corresponding calibration factor of different depth window.

Image calibration block 46 can be used for carrying out scale to the electric imaging logging image according to the calibration factor.

Electric imaging logging image graduation apparatus provided by the present application, according to collected electric imaging logging data and routine Well-log information gets the receptance function between electric imaging logging average current one and conventional logging shallow resistivity, and further The corresponding depth window average current two of different depth window is obtained according to the receptance function got, according to depth window average current two The corresponding calibration factor of different depth window is obtained, the scale of electric imaging logging image is finally completed according to calibration factor.It realizes Electric imaging logging average current one is accurately portrayed with conventional logging change in resistance rule, further improves electric imaging logging The accuracy of image scale.

In a kind of embodiment provided by the present application, the receptance function obtains module and is specifically used for:

Electric imaging logging average current one is divided into multiple electricity by electric imaging logging image graduation apparatus provided by the present application Section is flowed, the section between the corresponding electric imaging logging average current one in different electric current sections and conventional logging shallow resistivity is obtained The corresponding interval function in different electric current sections is combined, constitutes a piecewise function, that is, it is whole to obtain well section to be analyzed by function Receptance function between the corresponding electric imaging logging average current one of a well section and conventional logging shallow resistivity.For conventional shallow electricity The response characteristic of resistance rate and electric imaging logging average current one proposes segmentation automatic Matching Method, realizes and responds to the two Accurately portraying for changing rule, lays a good foundation for subsequent scale.

In a kind of embodiment provided by the present application, the Function Fitting that the receptance function obtains in module includes: Double-log straight line least square fitting.

In a kind of embodiment provided by the present application, the interval function includes linear equation function,

Correspondingly, the receptance function obtains module specifically for basisCalculate the straight line The coefficient of equation functions；

In above formula, a, b indicate the coefficient of the linear equation function；Sn indicates the average current in the electric current section The quantity of interior depth point；Indicate the corresponding conventional logging shallow resistivity in i-th of depth point；I-th of expression deep The corresponding electric imaging logging average current one of degree point.

Electric imaging logging image graduation apparatus provided by the present application will not using double-log straight line least square fitting method With electric current section, corresponding electric imaging logging average current one and conventional logging shallow resistivity are fitted, and obtain each Current Zone Between corresponding interval function.Interval function is combined, it is available to the average electricity of entire well section electric imaging logging to be analyzed Piecewise function between stream one and conventional logging shallow resistivity, i.e. electric imaging logging average current one and conventional logging shallow resistivity Between receptance function.The application is utmostly described full well section routine shallow resistivity response with piecewise function and surveyed with Electrical imaging Non-linear change tendencies between well average current one realize the response changing rule between electric imaging logging and conventional logging Accurately portray, provide accurate data basis for subsequent progress electric imaging logging image scale, improve electric imaging logging The accuracy of image scale.

In a kind of embodiment provided by the present application, two computing module of average current is specifically used for:

Electric imaging logging image graduation apparatus provided by the present application, according to the corresponding section letter in different electric current sections of acquisition Number, further progress carry out higher by the calculating of depth window according to the response coefficient of the corresponding interval function in different electric current sections The calculating of precision obtains the corresponding depth window average current two of different depth window, reduces existing point-by-point scale method using permanent Certainty ratio relationship bring error.

In a kind of embodiment provided by the present application, the calibration factor computing module is specifically used for:

In a kind of embodiment provided by the present application, described image scale unit is specifically used for:

Electric imaging logging image graduation apparatus provided by the present application, according to the corresponding depth window average current of different depth window Two, the corresponding calibration factor of different depth window is further obtained, the point-by-point scale of different calibration factors is carried out, effectively increases electricity The precision of imaging logging image scale, improves the accuracy of electric imaging logging image scale.

In a kind of embodiment provided by the present application, one computing module of average current is specifically used for: according to the electricity Imaging logging image utilizesThe electric imaging logging image is calculated to calculate The corresponding electric imaging logging average current one of different depth point in the well section to be analyzed；

Electric imaging logging image graduation apparatus provided by the present application calculates different depth point pair according to electric imaging logging image The electric imaging logging average current one answered, and it is special for the response of conventional logging shallow resistivity and electric imaging logging average current one Sign, proposes segmentation automatic Matching Method, realizes accurately portraying to the two response changing rule, establishes for subsequent scale Basis.Meanwhile different depth window corresponding quarter can be obtained by the depth window average current two of acquisition electric imaging logging image Coefficient is spent, the point-by-point scale of different calibration factors is carried out, effectively increases the precision of electric imaging logging image scale, improve electricity The accuracy of imaging logging image scale.It is counted automatically in addition, the application establishes a set of electric imaging logging image resistivity scale Calculation method and process may be implemented computer and automatically process, and can be obviously improved the treatment effeciency of well-log information.

It should be noted that device described above can also include other embodiment party according to the description of embodiment of the method Formula, concrete implementation mode are referred to the description of related method embodiment, do not repeat one by one herein.

It is above-mentioned that this specification specific embodiment is described.Other embodiments are in the scope of the appended claims It is interior.In some cases, the movement recorded in detail in the claims or step can be come according to the sequence being different from embodiment It executes and desired result still may be implemented.In addition, process depicted in the drawing not necessarily require show it is specific suitable Sequence or consecutive order are just able to achieve desired result.In some embodiments, multitasking and parallel processing be also can With or may be advantageous.

The processing method or device for the above-mentioned guarantee data consistency that this specification embodiment provides can be in a computer Corresponding program instruction is executed by processor to realize, such as realized using the c++ language of windows operating system at the end PC, Linux system is realized or other are for example realized using android, iOS system programming language in intelligent terminal, Yi Jiji Realized in the processing logic of quantum computer etc..A kind of another kind for electric imaging logging image graduation apparatus that this specification provides In embodiment, Fig. 5 is the modular structure schematic diagram of another electric imaging logging image graduation apparatus embodiment provided by the present application, As shown in figure 5, the electric imaging logging image graduation apparatus that another embodiment of the application provides may include processor 51 and use In the memory 52 of storage processor executable instruction,

Processor 51 and memory 52 pass through bus 53 and complete mutual communication；

The processor 51 is used to call the program instruction in the memory 52, to execute above-mentioned each electric imaging logging map The method as provided by scale method embodiment, for example, the electric imaging logging data for acquiring well section to be analyzed, according to described Electric imaging logging data obtains electric imaging logging image；It is calculated in the well section to be analyzed not according to the electric imaging logging image The corresponding electric imaging logging average current one with depth point；It obtains according to the electric imaging logging average current one and in advance normal Well-log information is advised, the receptance function between the electric imaging logging average current one and conventional logging shallow resistivity is constructed；According to It is flat to calculate the corresponding depth window of different depth window in the well section to be analyzed for the receptance function and the electric imaging logging image Equal electric current two；According to the depth window average current two and the Conventional Logs, the corresponding scale of different depth window is calculated Coefficient；Scale is carried out to the electric imaging logging image according to the calibration factor.

It should be noted that specification device or electronic equipment described above according to the description of related method embodiment also It may include other embodiments, concrete implementation mode is referred to the description of embodiment of the method, does not go to live in the household of one's in-laws on getting married one by one herein It states.Various embodiments are described in a progressive manner in the application, and same and similar part is mutual between each embodiment Referring to each embodiment focuses on the differences from other embodiments.Especially for hardware+program class For embodiment, since it is substantially similar to the method embodiment, so being described relatively simple, related place is implemented referring to method The part explanation of example.

This specification embodiment is not limited to meet industry communication standard, standard computer data processing sum number According to situation described in storage rule or this specification one or more embodiment.The right way of conduct is made in certain professional standards or use by oneself In formula or the practice processes of embodiment description embodiment modified slightly also may be implemented above-described embodiment it is identical, it is equivalent or The implementation result being anticipated that after close or deformation.Using these modifications or deformed data acquisition, storage, judgement, processing side The embodiment of the acquisitions such as formula still may belong within the scope of the optional embodiment of this specification embodiment.

In the 1990s, the improvement of a technology can be distinguished clearly be on hardware improvement (for example, Improvement to circuit structures such as diode, transistor, switches) or software on improvement (improvement for method flow).So And with the development of technology, the improvement of current many method flows can be considered as directly improving for hardware circuit. Designer nearly all obtains corresponding hardware circuit by the way that improved method flow to be programmed into hardware circuit.Cause This, it cannot be said that the improvement of a method flow cannot be realized with hardware entities module.For example, programmable logic device (Programmable Logic Device, PLD) (such as field programmable gate array (Field Programmable Gate Array, FPGA)) it is exactly such a integrated circuit, logic function determines device programming by user.By designer Voluntarily programming comes a digital display circuit " integrated " on a piece of PLD, designs and makes without asking chip maker Dedicated IC chip.Moreover, nowadays, substitution manually makes IC chip, this programming is also used instead mostly " is patrolled Volume compiler (logic compiler) " software realizes that software compiler used is similar when it writes with program development, And the source code before compiling also write by handy specific programming language, this is referred to as hardware description language (Hardware Description Language, HDL), and HDL is also not only a kind of, but there are many kind, such as ABEL (Advanced Boolean Expression Language)、AHDL(Altera Hardware Description Language)、Confluence、CUPL(Cornell University Programming Language)、HDCal、JHDL (Java Hardware Description Language)、Lava、Lola、MyHDL、PALASM、RHDL(Ruby Hardware Description Language) etc., VHDL (Very-High-Speed is most generally used at present Integrated Circuit Hardware Description Language) and Verilog.Those skilled in the art also answer This understands, it is only necessary to method flow slightly programming in logic and is programmed into integrated circuit with above-mentioned several hardware description languages, The hardware circuit for realizing the logical method process can be readily available.

Controller can be implemented in any suitable manner, for example, controller can take such as microprocessor or processing The computer for the computer readable program code (such as software or firmware) that device and storage can be executed by (micro-) processor can Read medium, logic gate, switch, specific integrated circuit (Application Specific Integrated Circuit, ASIC), the form of programmable logic controller (PLC) and insertion microcontroller, the example of controller includes but is not limited to following microcontroller Device: ARC 625D, Atmel AT91SAM, Microchip PIC18F26K20 and Silicone Labs C8051F320 are deposited Memory controller is also implemented as a part of the control logic of memory.It is also known in the art that in addition to Pure computer readable program code mode is realized other than controller, can be made completely by the way that method and step is carried out programming in logic Controller is obtained to come in fact in the form of logic gate, switch, specific integrated circuit, programmable logic controller (PLC) and insertion microcontroller etc. Existing identical function.Therefore this controller is considered a kind of hardware component, and to including for realizing various in it The device of function can also be considered as the structure in hardware component.Or even, it can will be regarded for realizing the device of various functions For either the software module of implementation method can be the structure in hardware component again.

System, device, module or the unit that above-described embodiment illustrates can specifically realize by computer chip or entity, Or it is realized by the product with certain function.It is a kind of typically to realize that equipment is computer.Specifically, computer for example may be used Think personal computer, laptop computer, vehicle-mounted human-computer interaction device, cellular phone, camera phone, smart phone, individual Digital assistants, media player, navigation equipment, electronic mail equipment, game console, tablet computer, wearable device or The combination of any equipment in these equipment of person.

Although this specification one or more embodiment provides the method operating procedure as described in embodiment or flow chart, It but may include more or less operating procedure based on conventional or without creativeness means.The step of being enumerated in embodiment Sequence is only one of numerous step execution sequence mode, does not represent and unique executes sequence.Device in practice or When end product executes, can be executed according to embodiment or the execution of method shown in the drawings sequence or parallel (such as it is parallel The environment of processor or multiple threads, even distributed data processing environment).The terms "include", "comprise" or its Any other variant is intended to non-exclusive inclusion so that include the process, methods of a series of elements, product or Equipment not only includes those elements, but also including other elements that are not explicitly listed, or further include for this process, Method, product or the intrinsic element of equipment.In the absence of more restrictions, being not precluded is including the element There is also other identical or equivalent elements in process, method, product or equipment.The first, the second equal words are used to indicate name Claim, and does not indicate any particular order.

For convenience of description, it is divided into various modules when description apparatus above with function to describe respectively.Certainly, implementing this The function of each module can be realized in the same or multiple software and or hardware when specification one or more, it can also be with The module for realizing same function is realized by the combination of multiple submodule or subelement etc..Installation practice described above is only It is only illustrative, for example, in addition the division of the unit, only a kind of logical function partition can have in actual implementation Division mode, such as multiple units or components can be combined or can be integrated into another system or some features can be with Ignore, or does not execute.Another point, shown or discussed mutual coupling, direct-coupling or communication connection can be logical Some interfaces are crossed, the indirect coupling or communication connection of device or unit can be electrical property, mechanical or other forms.

The present invention be referring to according to the method for the embodiment of the present invention, the process of device (system) and computer program product Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates, Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or The function of being specified in multiple boxes.

These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one The step of function of being specified in a box or multiple boxes.

In a typical configuration, calculating equipment includes one or more processors (CPU), input/output interface, net Network interface and memory.

Memory may include the non-volatile memory in computer-readable medium, random access memory (RAM) and/or The forms such as Nonvolatile memory, such as read-only memory (ROM) or flash memory (flash RAM).Memory is computer-readable medium Example.

Computer-readable medium includes permanent and non-permanent, removable and non-removable media can be by any method Or technology come realize information store.Information can be computer readable instructions, data structure, the module of program or other data. The example of the storage medium of computer includes, but are not limited to phase change memory (PRAM), static random access memory (SRAM), moves State random access memory (DRAM), other kinds of random access memory (RAM), read-only memory (ROM), electric erasable Programmable read only memory (EEPROM), flash memory or other memory techniques, read-only disc read only memory (CD-ROM) (CD-ROM), Digital versatile disc (DVD) or other optical storage, magnetic cassettes, tape magnetic disk storage, graphene stores or other Magnetic storage device or any other non-transmission medium, can be used for storage can be accessed by a computing device information.According to herein In define, computer-readable medium does not include temporary computer readable media (transitory media), such as the data of modulation Signal and carrier wave.

It will be understood by those skilled in the art that this specification one or more embodiment can provide as method, system or calculating Machine program product.Therefore, this specification one or more embodiment can be used complete hardware embodiment, complete software embodiment or The form of embodiment combining software and hardware aspects.Moreover, this specification one or more embodiment can be used at one or It is multiple wherein include computer usable program code computer-usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) on the form of computer program product implemented.

This specification one or more embodiment can computer executable instructions it is general on It hereinafter describes, such as program module.Generally, program module includes executing particular task or realization particular abstract data type Routine, programs, objects, component, data structure etc..This this specification one can also be practiced in a distributed computing environment Or multiple embodiments, in these distributed computing environments, by being held by the connected remote processing devices of communication network Row task.In a distributed computing environment, program module can be located at the local and remote computer including storage equipment In storage medium.

All the embodiments in this specification are described in a progressive manner, same and similar portion between each embodiment Dividing may refer to each other, and each embodiment focuses on the differences from other embodiments.Especially for system reality For applying example, since it is substantially similar to the method embodiment, so being described relatively simple, related place is referring to embodiment of the method Part explanation.In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", The description of " specific example " or " some examples " etc. means specific features described in conjunction with this embodiment or example, structure, material Or feature is contained at least one embodiment or example of this specification.In the present specification, to the signal of above-mentioned term Property statement be necessarily directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described It may be combined in any suitable manner in any one or more of the embodiments or examples.In addition, without conflicting with each other, this The technical staff in field can be by the spy of different embodiments or examples described in this specification and different embodiments or examples Sign is combined.

The foregoing is merely the embodiments of this specification one or more embodiment, are not limited to book explanation Book one or more embodiment.To those skilled in the art, this specification one or more embodiment can have various Change and variation.All any modification, equivalent replacement, improvement and so within the spirit and principles of the present application should all include Within scope of the claims.

Claims

1. a kind of electric imaging logging image scale method, which is characterized in that the described method includes:

The electric imaging logging data for acquiring well section to be analyzed obtains electric imaging logging image according to the electric imaging logging data；

It is average that the corresponding electric imaging logging of different depth point in the well section to be analyzed is calculated according to the electric imaging logging image Electric current one；

It is flat to construct the electric imaging logging for the Conventional Logs obtained according to the electric imaging logging average current one and in advance Receptance function between equal electric current one and conventional logging shallow resistivity；

According to the receptance function and the electric imaging logging image, it is corresponding to calculate different depth window in the well section to be analyzed Depth window average current two；

According to the depth window average current two and the Conventional Logs, the corresponding calibration factor of different depth window is calculated；

Scale is carried out to the electric imaging logging image according to the calibration factor；

Wherein, the Conventional Logs obtained according to the electric imaging logging average current one and in advance, construct the electricity Receptance function between imaging logging average current one and conventional logging shallow resistivity, comprising:

By the shallow resistance of the conventional logging corresponding with the electric current section of electric imaging logging average current one in the electric current section Rate carries out Function Fitting, obtains the different corresponding interval functions in the electric current section；

According to the interval function, the segmentation between the electric imaging logging average current one and conventional logging shallow resistivity is constructed Function, using the piecewise function as the receptance function.

2. a kind of electric imaging logging image scale method as described in claim 1, which is characterized in that the Function Fitting packet It includes: double-log straight line least square fitting.

3. a kind of electric imaging logging image scale method as claimed in claim 2, which is characterized in that the interval function includes Linear equation function, according to Calculate the coefficient of the linear equation function；

In above formula, a, b indicate the coefficient of the linear equation function；Sn indicates the electric imaging logging average current one described The quantity of depth point in electric current section；Indicate the corresponding conventional logging shallow resistivity in i-th of depth point；It indicates The corresponding electric imaging logging average current one in i-th of depth point.

4. a kind of electric imaging logging image scale method as claimed in claim 3, which is characterized in that described according to the response Function and the electric imaging logging image calculate the depth window average current two of different depth window in the well section to be analyzed, packet It includes:

According to Calculate the corresponding depth window average current two of different depth window in the well section to be analyzed；

In above formula, I_aver(depth) the depth window average current two is indicated；n_jIndicate the quantity of depth point in the depth window； n_kIndicate the pole plate number of electric imaging logging instrument；n_lIndicate the button electrode number on the electric imaging logging instrument pole plate； I_image(j,k, l) indicate k-th of pole plate in the depth window at j-th of depth point, thelThe electric current of a button electrode measurement Value；a(j,k, l)、b(j,k, l) indicate k-th of pole plate in the depth window at j-th of depth point, thelA button electrode The coefficient of the corresponding receptance function.

5. a kind of electric imaging logging image scale method as described in claim 1, which is characterized in that described according to the depth Window average current two and the Conventional Logs calculate the corresponding calibration factor of the depth window, comprising:

In above formula, C (depth) indicates the corresponding calibration factor of the depth window；RS (depth) indicates that the conventional of corresponding depth is surveyed Well shallow resistivity value；I_aver(depth) the depth window average current two is indicated.

6. a kind of electric imaging logging image scale method as described in claim 1, which is characterized in that described according to the scale Coefficient carries out scale to the electric imaging logging image, comprising:

According to I_scaled(j,k, l)=C (depth) I_image(j,k, l) to the electric imaging logging image in different depth window into Row scale；

In above formula, I_scaled(j,k, l) indicate k-th of pole plate in the depth window at j-th of depth point, thelA button electricity Current value after extremely corresponding scale；C (depth) indicates the corresponding calibration factor of the depth window；I_image(j,k, l) indicate K-th of pole plate in the depth window at j-th of depth point,lThe current value of a button electrode measurement.

7. a kind of electric imaging logging image scale method as described in claim 1, which is characterized in that it is described according to the electricity at As well logging image calculates the corresponding electric imaging logging average current one of different depth point in the well section to be analyzed, comprising:

According to the electric imaging logging image, utilizeCalculate it is described electricity at As well logging image calculates the corresponding electric imaging logging average current one of different depth point in the well section to be analyzed；

In above formula,Indicate the electric imaging logging average current one at the position depth point s；n_kIndicate electric imaging logging instrument Pole plate number；n_lIndicate the pole plate upper button electrode number of electric imaging logging instrument；I_image(s,k, l) indicate the depth point s K-th of pole plate at position,lThe current value of a button electrode measurement.

8. a kind of electric imaging logging image graduation apparatus, which is characterized in that described device includes:

Image generation module of logging well is provided for acquiring the electric imaging logging data of well section to be analyzed according to the electric imaging logging Material obtains electric imaging logging image；

One computing module of average current, for calculating different depth in the well section to be analyzed according to the electric imaging logging image The corresponding electric imaging logging average current one of point；

Receptance function obtains module, and the conventional logging for obtaining according to the electric imaging logging average current one and in advance provides Material, constructs the receptance function between the electric imaging logging average current one and conventional logging shallow resistivity；

Two computing module of average current, for calculating described wait divide according to the receptance function and the electric imaging logging image Analyse the corresponding depth window average current two of different depth window in well section；

Calibration factor computing module, for calculating different according to the depth window average current two and the Conventional Logs The corresponding calibration factor of depth window；

Image calibration block, for carrying out scale to the electric imaging logging image according to the calibration factor；

Wherein, the receptance function obtains module and is specifically used for:

9. a kind of electric imaging logging image graduation apparatus as claimed in claim 8, which is characterized in that the receptance function obtains The Function Fitting in module includes: double-log straight line least square fitting.

10. a kind of electric imaging logging image graduation apparatus as claimed in claim 9, which is characterized in that the interval function packet Linear equation function is included, correspondingly, the receptance function obtains module and is specifically used for basisCalculate the linear equation letter Several coefficients；

In above formula, a, b indicate the coefficient of the linear equation function；Sn indicates the average current in the electric current section The quantity of depth point；Indicate the corresponding conventional logging shallow resistivity in i-th of depth point；Indicate i-th of depth point Corresponding electric imaging logging average current one.

11. a kind of electric imaging logging image graduation apparatus as claimed in claim 10, which is characterized in that the average current two Computing module is specifically used for:

In above formula, I_aver(depth) the depth window average current two is indicated；n_jIndicate the quantity of depth point in the depth window； n_kIndicate the pole plate number of electric imaging logging instrument；n_lIndicate the button electrode number on the electric imaging logging instrument pole plate； I_image(j,k, l) indicate k-th of pole plate in the depth window at j-th of depth point, thelThe electric current of a button electrode measurement Value；a(j,k, l)、b(j,k, l) indicate k-th of pole plate in the depth window at j-th of depth point, thelA button electrode The coefficient of the corresponding linear equation function.

12. a kind of electric imaging logging image graduation apparatus as claimed in claim 8, which is characterized in that the calibration factor meter Module is calculated to be specifically used for:

13. a kind of electric imaging logging image graduation apparatus as claimed in claim 8, which is characterized in that described image scale list Member is specifically used for:

14. a kind of electric imaging logging image graduation apparatus as claimed in claim 8, which is characterized in that the average current one Computing module is specifically used for: according to the electric imaging logging image, utilizing It calculates the electric imaging logging image and calculates the corresponding electric imaging logging average current of different depth point in the well section to be analyzed One；

In above formula,Indicate the electric imaging logging average current one at the position depth point s；n_kIndicate electric imaging logging instrument Pole plate number；n_lIndicate the pole plate upper button electrode number of electric imaging logging instrument；I_image(s,k, l) indicate the position depth point s K-th of pole plate at place, thelThe current value of a button electrode measurement.

15. a kind of electric imaging logging image graduation apparatus, which is characterized in that can be held including processor and for storage processor The memory of row instruction, the processor are realized when executing described instruction such as any one of claim 1 to 7 the method Step.