CN213953582U - Underground double-probe magnetic measurement device - Google Patents
Underground double-probe magnetic measurement device Download PDFInfo
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- CN213953582U CN213953582U CN202022012540.5U CN202022012540U CN213953582U CN 213953582 U CN213953582 U CN 213953582U CN 202022012540 U CN202022012540 U CN 202022012540U CN 213953582 U CN213953582 U CN 213953582U
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Abstract
The utility model discloses a two probe magnetic measurement devices in pit, its technical scheme is: the power supply connection short section mainly comprises a cable connector and a stabilized voltage supply module, the cable connector is connected with a lower cable to supply power to the underground, and meanwhile, a coding signal is superposed on a single-core power supply cable to be transmitted; the positioning guide device mainly comprises a conical metal head and a hydraulic plug, wherein the conical metal head is connected with the instrument shell and is used for assisting in guiding and positioning under the action of pumping water power. The beneficial effects are that: the utility model can realize the measurement and calculation of the relative distance and direction between the magnetic source beacon and the measuring device in point-to-point and point-to-line, and ensure the accurate guiding and positioning of the drilled borehole and the drilled borehole; with the increase of the current mining requirements on the complex structure well, the success rate of drilling guiding and positioning in the complex structure well is improved.
Description
Technical Field
The utility model relates to an oil drilling is with following boring instrument technique, in particular to two probe magnetic measurement devices in pit.
Background
The failure of the easily-developed oil and gas reservoir enables the well technology with a complex structure to become the key for realizing efficient utilization of the oil and gas reservoir, and the key point of the well technology lies in the control and guidance of the well track. The existing geometric guidance technology can measure trajectory parameters such as a well inclination angle and an azimuth angle by utilizing sensors such as an accelerometer, a magnetometer and a gyroscope, and control of a well track in a drilling process is measured according to the current drilling direction, wherein measurement of relevant information of a geomagnetic field is an important measurement mode, but the geomagnetic field signal has poor capability of resisting external interference, and the precision of a measurement result cannot be guaranteed.
In order to solve the problem of low guiding precision when the existing geometric guiding and positioning technology is applied to the drilling of wells with complex structures, the guiding drilling technology for analyzing the electromagnetic field distribution is developed and applied, and is commonly applied to the drilling of wells with complex structures such as communicated wells, paired parallel horizontal wells and the like, the principle is that a magnetic field signal generating source and a signal measuring position are coupled into a closed loop system, the spatial distribution rule of the magnetic field signal is analyzed through the acquisition and processing of the magnetic field signal, a mathematical model is established for solving operation, the space vector distance between a magnetic field signal source and the measuring position is obtained, and therefore the well track is guided to drill according to the design requirement, the rotating magnetic field ranging system (RMRS) is most widely applied, and along with the increase of the current mining requirements of wells with complex structures, the improvement of the drilling guiding and positioning success rate and the trend prediction of the wells with complex structures are particularly urgent.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an underground double probe magnetic measuring device to the above-mentioned defect that prior art exists, can provide two fixed measuring points of baseline for magnetic parameter measurement in the pit, can realize the measurement calculation in relative distance position between the magnetic source beacon of "point-to-point" and "point-to-point line" and measuring device, ensure the well drilling and the accurate guiding orientation at the well drilling.
The technical scheme is as follows: the underground power supply device comprises a measuring sensor cabin (1), a signal acquisition cabin (2), a data processing cabin (3), a power supply connection short section (4), a positioning guide device (5) and a non-magnetic outer barrel (6), wherein the power supply connection short section (4), the data processing cabin (3), the signal acquisition cabin (2), the measuring sensor cabin (1) and the positioning guide device (5) are sequentially installed in the non-magnetic outer barrel (6), the power supply connection short section (4) mainly comprises a cable connector (7) and a voltage stabilizing power supply module (8), the cable connector (7) is connected with a lower cable to supply power in the pit, and meanwhile, a coding signal is superposed on a single-core power supply cable to be transmitted; the positioning guide device (5) mainly comprises a conical metal head (9) and a hydraulic plug (10), wherein the conical metal head (9) is connected with an instrument shell and guides the instrument to be positioned through gravity and hydraulic action, and the hydraulic plug (10) is arranged on a conical metal head base and is assisted in guiding and positioning through pumping hydraulic action.
Preferably, the measuring sensor cabin (1) mainly comprises a triaxial gravity accelerometer (11), a temperature sensor (12), a first triaxial magnetic field measuring probe (13) and a second triaxial magnetic field measuring probe (14), the triaxial gravity accelerometer (11) is installed at the midpoint position of a base line, the triaxial gravity accelerometer (11) measures triaxial gravity field data, and the temperature sensor (12) provides temperature data.
Preferably, the signal acquisition cabin (2) mainly comprises an alternating current/direct current isolation module (15) and a signal sampling and holding module (16), signals obtained from the measurement sensor cabin (1) are transmitted to the signal acquisition cabin (2), the sampling frequency is 80Hz, three-axis magnetic field signals are subjected to alternating current signal and direct current signal separation through the alternating current/direct current isolation module (15), the separated direct current signals are subjected to low-pass filtering through the direct current filtering module, the cutoff frequency is 1Hz, the separated alternating current signals are subjected to low-pass filtering, and the cutoff frequency is 10 Hz.
Preferably, the data processing cabin (3) mainly comprises a data processing module (17) and a communication module (18), the data processing module (17) obtains an azimuth angle, an inclination angle and a temperature at a measuring point according to a collected signal, the communication module (18) adopts a single-core power carrier communication mode, an encoding signal is driven by an SN55451B level and then is coupled into a single-core cable through a transformer for signal uploading, and an output signal of a sensor is used as a signal source of depth and speed on the ground.
Preferably, the data processing module (17) uses TMS320F2809 as a master control chip.
Preferably, the cable joint (7) is connected with a lower cable to supply power to the underground, and meanwhile, the coded signal is superposed on a single-core power supply cable to be transmitted; the voltage-stabilized power supply module (8) provides 5V, 12V and 15V direct current voltage-stabilized power supply for the downhole instrument through rectification.
Preferably, the power supply connection short section (4) is made of aluminum alloy and austenitic stainless steel nonmagnetic materials.
The utility model has the advantages that: the utility model can provide two measuring points with fixed base lines for the underground magnetic parameter measurement, extract the effective magnetic source beacon magnetic field data by filtering direct current component and noise elimination and filtration of the magnetic field data after the magnetic field data is collected, extracting geomagnetic data by low-pass filtering and denoising the magnetic field data, effectively judging a magnetic steering positioning starting point by using the axial magnetic field gradient change of two measuring points, the triaxial gravity accelerometer and the corresponding circuit module in the simultaneous measurement provide the downhole attitude data of the measurement device, the relative distance and azimuth data between the two measuring points and the magnetic source beacon are obtained through the inversion calculation of the extracted magnetic field data, the distance between the two measuring points is fixed by adopting a fixed base line, therefore, the measurement calculation of the relative distance and the direction between the magnetic source beacon and the measuring device of point-to-point and point-to-line can be realized, and the accurate guiding and positioning of the drilled well bore and the well bore in the well bore can be ensured; with the increase of the current mining requirements on the complex structure well, the success rate of drilling guiding and positioning in the complex structure well is improved.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a functional schematic of a sensor of the present invention;
fig. 3 is a schematic circuit diagram of the present invention;
fig. 4 is a schematic view of a communication well of the present invention;
fig. 5 is a schematic view of a parallel well of the present invention;
in the upper diagram: the device comprises a measuring sensor cabin 1, a signal acquisition cabin 2, a data processing cabin 3, a power supply connection short section 4, a positioning guide device 5, a non-magnetic outer barrel 6, a cable joint 7, a voltage-stabilized power supply module 8, a conical metal head 9, a hydraulic plug 10, a three-axis gravity accelerometer 11, a temperature sensor 12, a first three-axis magnetic field measuring probe 13, a second three-axis magnetic field measuring probe 14, an alternating current and direct current isolation module 15, a signal sampling and holding module 16, a data processing module 17 and a communication module 18; the device comprises an A section guide point, a B section guide point, an underground double-probe magnetic measurement device C and a rotary alternating magnetic source D.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.
As shown in fig. 2 and 3, the measurement sensor cabin 1 mainly includes a triaxial gravity accelerometer 11, a temperature sensor 12, a first triaxial magnetic field measurement probe 13, and a second triaxial magnetic field measurement probe 14, the triaxial gravity accelerometer 11 is installed at a midpoint position of a base line, the triaxial gravity accelerometer 11 measures triaxial gravity field data, and the temperature sensor 12 provides temperature data.
As shown in fig. 2 and 3, the signal acquisition cabin 2 mainly comprises an ac/dc isolation module 15 and a signal sampling and holding module 16, signals obtained from the measurement sensor cabin 1 are transmitted to the signal acquisition cabin 2, the sampling frequency is 80Hz, the three-axis magnetic field signals are subjected to ac signal and dc signal separation through the ac/dc isolation module 15, the separated dc signals are subjected to low-pass filtering through a dc filtering module, the cutoff frequency is 1Hz, the separated ac signals are subjected to low-pass filtering, and the cutoff frequency is 10 Hz.
As shown in fig. 2 and 3, the data processing cabin 3 mainly includes a data processing module 17 and a communication module 18, the data processing module 17 obtains an azimuth angle, an inclination angle and a temperature at a measurement point according to a collected signal, the communication module 18 adopts a single-core power carrier communication mode, a coded signal is driven by an SN55451B level and then is coupled to a single-core cable through a transformer for signal uploading, and an output signal of a sensor is used as a signal source of depth and speed on the ground.
In addition, the data processing module 17 adopts TMS320F2809 as a main control chip, the cable joint 7 is connected with a drop cable to supply power to the underground, and the coded signal is superimposed on a single-core power supply cable to be transmitted; the voltage-stabilizing power supply module 8 provides 5V, 12V and 15V direct-current voltage-stabilizing power supply for the underground instrument through rectification; the power supply connection short section 4 is made of aluminum alloy and austenitic stainless steel nonmagnetic materials.
As shown in fig. 2, fig. 3 and fig. 4, the utility model provides a method for using a downhole dual-probe magnetic measurement device, which comprises the following steps:
in the construction of a communication well, a vertical well is lowered 3 meters above a communication point, the distance between a first triaxial magnetic field measuring probe 13 and a second triaxial magnetic field measuring probe 14 along the axial line is 0.8m and serves as a measuring unit baseline, the first triaxial magnetic field measuring probe 13 and the second triaxial magnetic field measuring probe 14 respectively measure magnetic field data of the measuring point, the ratio of the magnetic field component difference value of the two probes along the axial line to the baseline distance can obtain an axial magnetic field gradient value, and the influence of an alternating magnetic field can be effectively judged through the change of the magnetic field gradient value to determine a magnetic steering positioning starting point;
the azimuth angle, the inclination angle and the temperature of a measuring point are obtained by measuring a sensor cabin 1, a signal acquisition cabin 2 and a data processing cabin 3, the output signal of the sensor is adopted on the ground as a signal source of depth and speed, an EMD method is adopted for denoising an alternating current signal received on the ground, and in the step 1, the alternating current signal is decomposed by utilizing EMD to decompose 8 IMF components with the frequency from high to low and 1 residual component; step 2, selecting 5Hz as a dividing point of high frequency and low frequency, and removing high frequency components in IMF components; and step 3: and reconstructing the residual IMF components by using an EMD method again to obtain a denoised signal, and carrying out relative distance and orientation calculation by extracting the amplitude and frequency domain characteristics of the rotating alternating magnetic field signal according to the azimuth angle, the inclination angle and the temperature of the measured point to ensure the accurate guiding and positioning of the drilled borehole and the drilled borehole.
in the construction of the parallel horizontal well, an instrument conducts subsection guiding, firstly, measurement guiding positioning is conducted on a section A guiding point, then a measuring device is conveyed to a section B guiding point through the action of pumping hydraulic force to conduct measurement guiding positioning, and accordingly subsection guiding positioning of the parallel well is achieved;
the magnetic field component difference value of the two probes along the axis in the positioning process and the baseline distance ratio are measured to obtain an axis magnetic field gradient value, and the influence of the alternating magnetic field can be effectively judged through the change of the magnetic field gradient value to determine a magnetic steering positioning starting point; the azimuth angle, the inclination angle and the temperature of a measuring point are obtained through the measuring sensor cabin 1, the signal acquisition cabin 2 and the data processing cabin 3, the output signal of the Martink sensor is adopted as a signal source of depth and speed on the ground, noise elimination is carried out on alternating current signals received on the ground through an EMD method, a signal after noise elimination is obtained, and the accurate guiding and positioning of a drilled well and the drilled well is ensured through extracting the amplitude and frequency domain characteristics of a rotating alternating magnetic field signal according to the azimuth angle, the inclination angle and the temperature of the measuring point.
The above description is only a preferred embodiment of the present invention, and any person skilled in the art may modify the present invention or modify it into an equivalent technical solution by using the technical solutions described above. Therefore, any simple modifications or equivalent replacements made according to the technical solution of the present invention belong to the scope of the claimed invention as far as possible.
Claims (7)
1. A kind of DH twin probe magnetic measuring apparatus, its characteristic is: the underground power supply device comprises a measuring sensor cabin (1), a signal acquisition cabin (2), a data processing cabin (3), a power supply connection short section (4), a positioning guide device (5) and a non-magnetic outer barrel (6), wherein the power supply connection short section (4), the data processing cabin (3), the signal acquisition cabin (2), the measuring sensor cabin (1) and the positioning guide device (5) are sequentially installed in the non-magnetic outer barrel (6), the power supply connection short section (4) mainly comprises a cable connector (7) and a voltage stabilizing power supply module (8), the cable connector (7) is connected with a lower cable to supply power in the pit, and meanwhile, a coding signal is superposed on a single-core power supply cable to be transmitted; the positioning guide device (5) mainly comprises a conical metal head (9) and a hydraulic plug (10), wherein the conical metal head (9) is connected with an instrument shell and guides the instrument to be positioned through gravity and hydraulic action, and the hydraulic plug (10) is arranged on a conical metal head base and is assisted in guiding and positioning through pumping hydraulic action.
2. A downhole dual probe magnetic measurement device as claimed in claim 1, wherein: the measurement sensor cabin (1) mainly comprises a triaxial gravity accelerometer (11), a temperature sensor (12), a first triaxial magnetic field measurement probe (13) and a second triaxial magnetic field measurement probe (14), wherein the triaxial gravity accelerometer (11) is installed at a midpoint position of a base line, the triaxial gravity accelerometer (11) measures triaxial gravity field data, and the temperature sensor (12) provides temperature data.
3. A downhole dual probe magnetic measurement device as claimed in claim 1, wherein: the signal acquisition cabin (2) mainly comprises an alternating current-direct current isolation module (15) and a signal sampling and holding module (16), signals obtained from the measurement sensor cabin (1) are transmitted to the signal acquisition cabin (2), the sampling frequency is 80Hz, three-axis magnetic field signals are subjected to alternating current signal and direct current signal separation through the alternating current-direct current isolation module (15), the separated direct current signals are subjected to low-pass filtering through the direct current filtering module, the cut-off frequency is 1Hz, the separated alternating current signals are subjected to low-pass filtering, and the cut-off frequency is 10 Hz.
4. A downhole dual probe magnetic measurement device as claimed in claim 1, wherein: the data processing cabin (3) mainly comprises a data processing module (17) and a communication module (18), the data processing module (17) obtains an azimuth angle, an inclination angle and a temperature of a measuring point according to a collected signal, the communication module (18) adopts a single-core-based power carrier communication mode, a coded signal is subjected to level driving through SN55451B and then is coupled into a single-core cable through a transformer for signal uploading, and an output signal of a sensor is adopted on the ground as a signal source of depth and speed.
5. A downhole dual probe magnetic measurement device as claimed in claim 4, wherein: the data processing module (17) adopts TMS320F2809 as a main control chip.
6. A downhole dual probe magnetic measurement device as claimed in claim 1, wherein: the cable joint (7) is connected with a lower cable to supply power to the underground, and meanwhile, the coded signals are superposed on a single-core power supply cable to be transmitted; the voltage-stabilized power supply module (8) provides 5V, 12V and 15V direct current voltage-stabilized power supply for the downhole instrument through rectification.
7. A downhole dual probe magnetic measurement device as claimed in claim 1, wherein: the power supply connection short section (4) is made of aluminum alloy and austenitic stainless steel nonmagnetic materials.
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| CN202022012540.5U CN213953582U (en) | 2020-09-15 | 2020-09-15 | Underground double-probe magnetic measurement device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112253084A (en) * | 2020-09-15 | 2021-01-22 | 中石化石油工程技术服务有限公司 | Underground double-probe magnetic measurement device and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112253084A (en) * | 2020-09-15 | 2021-01-22 | 中石化石油工程技术服务有限公司 | Underground double-probe magnetic measurement device and method |
| CN112253084B (en) * | 2020-09-15 | 2024-02-27 | 中石化石油工程技术服务有限公司 | Underground double-probe magnetic measurement device and method |
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Effective date of registration: 20220214 Address after: 100029 Chaoyang District, Beijing Hui Xin Street six, Twelfth level. Patentee after: SINOPEC OILFIELD SERVICE Corp. Patentee after: SINOPEC SHENGLI PETROLEUM ENGINEERING Co.,Ltd. Patentee after: Sinopec Jingwei Co.,Ltd. Patentee after: Shengli directional well company of Sinopec Jingwei Co.,Ltd. Address before: 100101 twelfth floor, No. 16, Huixin East Street, Chaoyang District, Beijing Patentee before: SINOPEC OILFIELD SERVICE Corp. Patentee before: SINOPEC SHENGLI PETROLEUM ENGINEERING Co.,Ltd. Patentee before: DRILLING WELL ENGINEERING TECHNOLOGY COMPANY OF SINOPEC SHENGLI PETROLEUM ENGINEERING Co.,Ltd. |