CN110749940A - Quantitative configuration method for exploring reserve source constitution of crude oil depression - Google Patents
Quantitative configuration method for exploring reserve source constitution of crude oil depression Download PDFInfo
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Abstract
The invention discloses a quantitative configuration method for exploring reserve source constitution of crude oil depression, which is characterized by comprising the steps of determining effective hydrocarbon source rocks and hydrocarbon supply ranges of the crude oil depression; determining the source composition of the ascertained reserves in the oil pit hydrocarbon supply range, and representing the quantitative configuration of the ascertained reserves in the crude oil pit hydrocarbon supply range; and determining the oil-gas accumulation rule of the crude oil pit according to the quantitative configuration formed by the reservoir sources in the hydrocarbon supply range of the crude oil pit. The invention can divide the hydrocarbon supply range of the crude oil pit through geochemical characteristic analysis of a typical petroleum sample based on the ascertained reserves of the reservoirs of all strata series of the crude oil pit, generates a systematic method for ascertaining petroleum sources by the crude oil pit to form quantitative characterization, and provides a basis for residual resource prediction and exploration deployment.
Description
Technical Field
The invention relates to a quantitative configuration method for exploring reserve source formation of raw oil pits (depressions), belonging to the field of petroleum geological exploration.
Background
The oil-gas resources in the eastern region of China are rich, the exploration degree as a 'mature exploration region' reaches a higher level, the exploration reserves are rich, the source composition and quantitative configuration of the exploration oil-gas resources become hot points concerned in oil exploration, and the method has important significance for residual resource amount evaluation and next exploration deployment.
The source of oil and gas is an important content in the oil and gas exploration process, and because the distribution of oil and gas is directly controlled by the source of oil and gas, the source of oil and gas must be analyzed if the reservoir source composition of a raw oil depression (depression) is determined. Currently, various methods for oil source comparison are well established, such as by chromatography, isotopes, biomarkers, and the like. During exploration, a petroleum sample of an exploratory well or a development well is sampled and subjected to geological analysis, and an oil gas source is determined through oil source comparison, so that technical support is provided for petroleum exploration. However, since the geochemistry authors usually pay attention to the oil and gas sources of the hot exploration wells (newly increased exploration reserves), but neglect the source composition research of the earlier exploration reserves, the samples of the crude oil geochemical analysis of a certain hot reservoir are more, and the crude oil samples with larger reserves and more definite sources are less, and further, if the geochemistry authors do not have clear concepts on the reserves of each reservoir, the samples are misled to form wrong understanding. However, there is currently a lack of a systematically effective method of quantitatively characterizing the source of "mature exploratory" proven reserves.
The ubiquitous of the mixed source oil-gas reservoir becomes a consensus, the contribution proportion of each set of hydrocarbon source rock in the mixed source oil is accurately judged, and the main hydrocarbon source rock stratum is determined, so that the method has important significance for guiding oil-gas exploration. However, because the continental facies fault basin has a multi-cycle and multi-superposition structural evolution background, multiple sets of hydrocarbon source rocks develop and multiple secondary and hydrocarbon discharge processes occur, and therefore, the determination of the source mixing ratio of hydrocarbon source rock oil gas is very difficult. Since geologists do not have clear knowledge of the contribution ratio of the source rock to the ascertained reserves (oil mixtures) of which the source is difficult to determine, it is objectively difficult to establish a quantitative relationship between the hydrocarbon supply and the ascertained reserves of each set of source rock. How to establish a relationship between the ascertained reserves and the analysis of typical crude oil sample sources of each reservoir, quantitatively calculate the ascertained reserves of the mixed source oil, and quantitatively configure the ascertained reserves source composition in the range of crude oil sinking for hydrocarbon supply is an urgent problem to be solved by the technical staff in the field.
Disclosure of Invention
In view of the above problems, an object of the present invention is to provide a quantitative allocation method for exploration reserve source formation of raw oil pits (hollow), which can divide hydrocarbon supply range of raw oil pits (hollow) by geochemical feature analysis of typical petroleum samples based on exploration reserve of each layer of reservoir of raw oil pits (hollow), generate a systematic method for quantitative characterization of raw oil pits (hollow) exploration reserve source formation, and provide basis for residual resource prediction and exploration deployment.
In order to achieve the purpose, the invention adopts the following technical scheme: a quantitative configuration method for detecting reserve source constitution of crude oil pit comprises determining effective hydrocarbon source rock and hydrocarbon supply range of crude oil pit; determining the source composition of the ascertained reserves in the range of the crude oil pit for hydrocarbon supply, and representing the quantitative configuration of the ascertained reserves in the range of the crude oil pit for hydrocarbon supply; and determining the oil-gas accumulation rule of the crude oil pit according to the quantitative configuration formed by the reservoir sources in the hydrocarbon supply range of the crude oil pit.
In a specific embodiment, hydrocarbon source rock evaluation is performed based on hydrocarbon potential analysis of the green oil pits in combination with geochemical characteristics of the hydrocarbon source rock to determine the effective hydrocarbon source rock and corresponding biomarker compound characteristics of the green oil pits.
In a specific embodiment, crude oil of reservoirs of various strata series of the crude oil depression is sampled, crude oil sample chromatography-mass spectrometry is carried out, and single-source crude oil and mixed-source oil of the reservoirs of various strata series of the crude oil depression are determined through crude oil type division and oil source comparison.
In a specific embodiment, the hydrocarbon supply range of the crude oil pit is determined according to the effective hydrocarbon source rock of the crude oil pit, the oil source comparison and the geochemical characteristic analysis, by using the change rule of the geochemical index or the biochemical standard parameter of crude oil migration and combining the characteristics of the biomarker compounds and the geological characteristics of the effective hydrocarbon source rock.
In a specific embodiment, the source of the ascertained reserves in the hydrocarbon-supplying range of the green oil pit comprises ascertained reserves of single-source crude oil and commingled-source oil of the respective stratigraphic reservoir.
In a specific embodiment, the ascertained reserve vectorization data of each layer system reservoir stratum within the range of the crude oil depression for hydrocarbon supply are arranged in a geological mapping system in different layers, the ascertained reserve area of each layer system reservoir stratum is determined, the source determination of the ascertained reserve is sequentially completed by layer system and partition according to the oil gas source analysis result of each layer system reservoir stratum, the oil gas source of the ascertained reserve of each layer system reservoir stratum is determined, and the quantitative configuration of the ascertained reserve source of each layer system reservoir stratum is realized by combining the source-mixed oil contribution proportion of the crude oil depression effective hydrocarbon source rock.
In a specific embodiment, a source of oil and gas and its reserve configuration exhibiting green oil pits is stacked.
In a specific embodiment, crude oil samples of reservoirs with different positions are correspondingly placed in different layers, crude oil samples of a reservoir with the same position are placed in one layer, crude oil samples with different sources in the reservoir with the same position are represented by different well position symbols or different colors of the same symbol, the ascertained reserves of each block of each layer reservoir are determined according to the ascertained reserves of each block, the ascertained reserves of different sources are represented by different colors, and oil and gas sources of the ascertained reserves of each layer reservoir in the range of crude oil depression for hydrocarbon supply are sequentially determined.
In a specific embodiment, according to the oil source determined by the crude oil sample of each layer series of reservoirs, the oil source of the ascertained reserve area of the block where the crude oil sample well is located is determined, the oil source is respectively placed in different layers under the reservoirs of each layer series according to the differences of the ascertained reserve sources, the ascertained reserves of different sources are represented by different colors, and then the oil and gas source of the ascertained reserve of the reservoirs of each layer series of reservoirs of the block is determined.
In a specific embodiment, according to the secondary analysis result of the crude oil depression formation period, combining the characteristics of oil gas, selecting an end-member oil sample, calculating the absolute concentration or the biochemical standard parameters of saturated hydrocarbon and aromatic hydrocarbon biomarkers by a biomarker absolute quantitative technology, establishing a mixed source chart, carrying out quantitative analysis on a mixed source oil sample well, and determining the mixed source oil contribution ratio of the crude oil depression effective hydrocarbon source rock.
Due to the adoption of the technical scheme, the invention has the following advantages: the quantitative characterization of the ascertained reserve source of each layer of reservoir in the hydrocarbon supply range of the raw oil pits (hollow) is realized by adopting a vectorization picture system, the source composition and the configuration mode of the ascertained reserve are rapidly and clearly determined, the oil-gas cause source and the ascertained reserve of the raw oil pits (hollow) can be effectively combined, the oil-gas accumulation rule of the raw oil pits (hollow) is clearly determined, the newly increased ascertained reserve can be conveniently and quickly added into the vectorization picture every year, the oil source comparative analysis is carried out through crude oil supplement sampling, the source composition and the configuration mode of the newly increased reserve are simply and rapidly determined, the source research of the ascertained reserve of each layer of reservoir in the hydrocarbon supply range of the raw oil pits (hollow) is continuous, meanwhile, a basis is provided for the research of resource evaluation and the configuration mode of the residual resource amount, and the next rolling exploration service is provided.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
In order to more clearly illustrate the technical solution in the embodiments of the present invention, the following briefly introduces the drawings required in the description of the embodiments:
FIG. 1 is a schematic flow diagram of an embodiment of the present invention;
FIG. 2 is a schematic diagram of a hydrocarbon range partitioning configuration of a Bozhuang depression according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a flow chart of quantitative calculation of source-mixed oil according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of the configuration of hydrocarbon source and reserve in a Bozhuangyu sand-filled four-section reservoir according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a configuration of source and reserve of hydrocarbon sources in a Bozhuangyu sand-filled three-stage reservoir according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of a configuration of source and reserve for depressed hydrocarbon sources in a cattle configuration, in accordance with an embodiment of the present invention.
Detailed Description
The following detailed description of the embodiments of the present invention will be provided with reference to the drawings and examples, so that how to apply the technical means to solve the technical problems and achieve the technical effects can be fully understood and implemented. It should be noted that, as long as there is no conflict, the embodiments and the features of the embodiments of the present invention may be combined with each other, and the technical solutions formed are within the scope of the present invention.
As shown in FIG. 1, the quantitative allocation method for detecting reserve source constitution of crude oil depression provided by the invention comprises
1) Determining effective source rock and oil and gas sources
And (3) according to the analysis of hydrocarbon generation potential of the hydrocarbon source rock, and combining geochemical characteristics of the hydrocarbon source rock, evaluating the hydrocarbon source rock, and determining the effective hydrocarbon source rock generating oil pits (depressions) and the corresponding characteristics of the biomarker compounds. And then, sampling crude oil of each layer of reservoir system of the crude oil depression (depression), performing crude oil sample chromatography-mass spectrometry, and determining single-source crude oil and mixed-source oil of each layer of reservoir system of the crude oil depression (depression) through crude oil type division and oil source comparison. And introducing the well position coordinates of the sample into a base map with a geological structure background by adopting a geological mapping system, placing crude oil samples of reservoirs at the same layer into the same map layer representing wells, and expressing crude oil with different sources in the reservoirs at the same layer by adopting different well position symbols or different colors of the same symbol. Wherein the geological mapping system is a vectorized graph.
In a preferred embodiment, the geological mapping system is a dual fox software.
2) Determining hydrocarbon supply range of oil-producing pits
And determining the hydrocarbon supply range of the raw oil pits (hollow) according to effective hydrocarbon source rocks of the raw oil pits (hollow), oil source comparison and geochemical characteristic analysis, by using the change rule of the geochemical index or the biochemical standard parameter of crude oil migration and combining the characteristics of the biomarker compounds and the geological characteristics of the effective hydrocarbon source rocks.
Furthermore, for oil fields with multiple sources for hydrocarbon supply, particularly for oil and gas gathering zones surrounded by a plurality of depressions, the oil and gas sources are often complex, and the oil and gas sources are determined and hydrocarbon supply ranges are divided by applying the change rule of migration geochemical indexes or biochemical parameters on the basis of evaluation and geochemical characteristic analysis of surrounding depression hydrocarbon source rocks and combining the biomarker characteristics and geological characteristics of different depression effective hydrocarbon source rocks. The geochemical indexes of crude oil migration, such as the benchmarking parameters related to the maturity, are characterized in that according to the basic principle of oil reservoir geochemistry, the same set of hydrocarbon source rock is used for supplying hydrocarbon in an oil reservoir range, the maturity of the petroleum filled in the early stage is low, the maturity of the petroleum filled in the later stage is relatively high, and the petroleum with the highest maturity is distributed in a zone closest to an oil reservoir filling point. The method can be used for obtaining better effect by the coating anticline structural belt surrounded by a plurality of depressions. Therefore, the hydrocarbon supply range boundary of the oil field of the multi-source hydrocarbon supply is determined according to the change rule of the crude oil migration geochemical index (such as nitrogen-containing compounds) on the plane and the reservoir geological profile (geological condition) represented by the geochemical parameters.
3) Determining the source constitution of the ascertained reserves in the hydrocarbon-supplying range of the oil pits (dimples), characterizing the quantitative allocation of the ascertained reserve constitution in the hydrocarbon-supplying range of the raw oil pits (dimples)
Vectorized data of the ascertained reserves of different blocks of each layer system reservoir in the crude oil recess (hollow) hydrocarbon supply range are led into the double fox software in different layers, the areas of the ascertained reserves are displayed in a base map with a geological background, and the source determination of the ascertained reserves is sequentially completed by combining the analysis results of single-source crude oil and mixed-source oil of each layer system reservoir in the crude oil recess (hollow) hydrocarbon supply range, namely, each layer system reservoir in the crude oil recess (hollow) hydrocarbon supply range comprises a plurality of oil fields or blocks, and simultaneously, one oil field or block also comprises a plurality of reservoir layer systems. The ascertained reserve sources for the different blocks were determined from oil source analysis of the crude oil sample wells: and determining the ascertained reserve sources of all blocks of the reservoir of the same layer system in one layer system, respectively placing the reserve areas of different sources in different layer systems under the layer system, correspondingly adopting different colors for representation, and calculating the oil and gas sources of the ascertained reserve of all layer systems in the block by statistical analysis. And finally realizing the quantitative allocation of the reserve source of each block of each layer system by combining the contribution ratio of the source-mixed oil of the effective source rocks, and overlapping and displaying the oil-gas source with raw oil pits (depressions) and the reserve allocation thereof.
Crude oil of reservoirs with different positions is correspondingly placed in different layers, the crude oil of the reservoir with the same position is placed in one layer, the crude oil with different sources in the reservoir with the same position is represented by different well position symbols or different colors, the source of the ascertained reserves of each oil field or each block of the reservoir with each layer is determined according to the representation of the ascertained reserves of each oil field or each block of the reservoir with each layer by different colors, and the oil gas sources of the ascertained reserves of the reservoirs with different oil pits in the hydrocarbon supply range of each layer are sequentially determined.
Further, for boundary oil fields (multi-hydrocarbon supply zones) supplied with hydrocarbon by different oil pits, the allocation of the ascertained reserves is combined with the division of the hydrocarbon supply range and the analysis of geological conditions, and the ascertained reserve contribution of the studied oil pits to the reservoirs of each series of the oil field is reasonably allocated.
And determining the contribution proportion of the source rock source-mixed oil of the green oil pits (hollow) effective hydrocarbon source according to the quantitative calculation of the source-mixed oil. On the basis of carrying out crude oil depression (depression) accumulation period times and oil gas characteristic analysis, selecting a typical terminal oil sample, calculating the absolute concentration or the crude standard parameters of saturated hydrocarbon and aromatic hydrocarbon biomarkers by a biomarker absolute quantitative technology, establishing a binary or ternary mixed source chart, carrying out quantitative analysis on the mixed source sample, and determining the contribution proportion of the crude oil depression (depression) effective hydrocarbon source rock mixed source oil. The proportioning test shows that the absolute content of the biomarker is linearly changed along with the mixing proportion of the end-member oil, so that a plurality of typical end-member oil samples can be selected for each type of crude oil, the contribution proportion of the blending oil is calculated by taking the average value of the absolute content of the biomarker of each type of crude oil as an end-member value, and the representativeness and the reliability are better. The method comprises the steps of determining the number of oil pits (hollow) in the formation period by analyzing inclusion bodies, and determining the oil and gas characteristics of reservoir layers of all layers by analyzing the burying history of effective hydrocarbon source rocks.
4) Determining the oil-gas accumulation rule of the raw oil pits (hollow) according to the quantitative configuration formed by the exploration of reserve sources in the hydrocarbon supply range of the raw oil pits (hollow)
By using double fox software, the oil gas cause source and the raw oil pit (hollow) exploration reserves are effectively combined, the quantitative configuration formed by the exploration of the reserve source in the hydrocarbon supply range of the raw oil pit (hollow) is realized, the oil gas accumulation rule of the raw oil pit (hollow) is determined, and the oil gas prediction and oil gas exploration service is provided.
An embodiment will be described below
The present embodiment relates to a depression in the Taiyang region.
1) Hydrocarbon source rock evaluation and oil source comparison
According to analysis of hydrocarbon generation potential of hydrocarbon source rocks, hydrocarbon source rock evaluation is carried out by combining geochemical characteristics of the hydrocarbon source rocks, two sets of high-quality hydrocarbon source rocks of four sand sections and three sand sections mainly developed by the Bozhuang depression are determined, and typical biomarker compound characteristics of each set of hydrocarbon source rocks are determined.
And then, sampling the crude oil of each layer system reservoir stratum, in order to prove the accuracy of quantitative characterization of reserve sources, uniformly distributing the crude oil samples as much as possible and spreading the crude oil samples at each layer position, and carrying out chromatography-mass spectrometry on the crude oil samples. Through crude oil cause classification and oil source comparison, oil source identification marks of crude oils from different sources are determined, and single-source crude oil and mixed-source oil of reservoirs of all series of the depressed cattle are determined. Wherein the four-section source crude oil of the Bozhuangyan sunk sand has the characteristics of high gamma-paraffin and lower 4-methyl sterane. The Satsurue source crude oil has the characteristics of low gamma-paraffin and high 4-methyl-sterane. The mixed source oil has the characteristics of the two. After sample wells of crude oil with single source and mixed source oil are distinguished, well positions and output positions of crude oil with different sources are marked in double fox software respectively.
2) Determining hydrocarbon supply range for cattle depressions
On the basis of oil source identification, the hydrocarbon supply range of the Bozhuangdu depression is divided, for an oil gas gathering zone surrounded by a plurality of raw oil depressions, such as a central humping zone, the oil gas source is complex, macroscopic and microscopic similarities and differences of different depressed hydrocarbon source rocks are determined on the basis of fine analysis of effective hydrocarbon source rock deposition evolution of different depressions at the periphery and geochemical characteristics of the effective hydrocarbon source rock deposition evolution of different depressions at the periphery, fine oil source comparison is carried out, and the hydrocarbon supply range of the Bozhuangdu depression (shown in figure 2 and a region surrounded by dotted lines) is reasonably divided by combining the change rule of a biomarker parameter on a plane and a section or the geochemical index of crude oil migration.
3) Determining a source-mixed oil contribution ratio for an effective source rock
As shown in fig. 3, the blending oil contribution ratio of the effective source rock was determined using the biomarker absolute quantification technique. The proportion test carried out by the absolute quantification of the biomarkers shows that if the error influence caused by integral qualitative detection is eliminated, the absolute content of each biomarker is linearly changed along with the mixing proportion, and the parameters of the biomarkers are hyperbolic changed along with the mixing proportion. According to the rule, a plurality of typical end-member oil samples are selected for each type of crude oil, the average value of the absolute content of the biomarkers of each type of crude oil is used as an end-member value to calculate the contribution proportion of the mixed source oil, and the representativeness and the reliability are good. If the cause of the mixed source oil is complex, the mixed source oil for multi-source multi-period reservoir formation needs to be analyzed by combining the characteristics of reservoir oil gas on the basis of reservoir oil gas secondary analysis to study whether the characteristics of multi-period filling exist, if the geochemical characteristics of crude oil in different sand layer groups in reservoirs of all layers show differences, the crude oil in a certain sand layer shows the characteristics of biodegradation, the reservoir formation process and the oil gas source need to be finely analyzed if the reservoir formation process is complex, and then the selection of end-member oil is carried out on the basis, so that the reliability is improved.
The pooled source oil of the depressed ox-bank is mainly distributed in three sand reservoirs, and according to inclusion analysis, the main reservoir forming period of the region is mature crude oil provided by the effective hydrocarbon source rocks of the three sand reservoirs and the four sand reservoirs in the depressed ox-bank in the Ming-village sediment period.
Selecting 4 samples from the sand three-section end-member oil, selecting 4 samples from the sand four-section end-member oil, and selecting 1 sample from the mixed source oil. And then carrying out absolute quantitative analysis on the biomarkers, calculating the absolute content of each biomarker in the crude oil sample, wherein the crude oil from the three sand sources takes the average value of the absolute content of the biomarkers in the selected 4 samples as an end-member value, the crude oil from the four sand sources takes the average value of the absolute content of each biomarker in the selected 4 samples as an end-member value, the absolute content of the biomarkers is linearly changed along with the proportion of the mixed end-member oil, and the parameters of the biomarkers are hyperbolically changed along with the proportion of the mixed end-member oil. And calculating the contribution proportion of the source oil mixture of the effective source rock according to the absolute content of the biomarker in the source oil mixture sample or the parameter value of the biomarker. The contribution of the four-section effective hydrocarbon source rocks determined by the absolute content of the gamma-paraffins is 45%, and the contribution of the four-section effective hydrocarbon source rocks determined by the absolute content of the hopane is 49%; calculating the absolute content of sterane and hopane and the sterol/hopane value of the source oil to obtain the contribution ratio of the source oil: the mixed source oil contribution ratio of the sand four-section effective hydrocarbon source rock is 50%. And averaging the mixed source oil proportions obtained by the parameters to obtain 48% of the mixed source oil contribution proportion of the sand four-section effective hydrocarbon source rock and 52% of the mixed source oil contribution proportion of the sand three-section effective hydrocarbon source rock.
For the ternary mixed source oil, the ternary plate can be used for determining the mixed source oil contribution proportion of each effective hydrocarbon source rock through absolute quantification of biomarkers.
4) Source composition of ascertained reserves of each reservoir system
After determining the oil and gas sources of crude oil samples of each layer system reservoir stratum, marking well position coordinates at different positions in double fox software, placing the crude oil samples at different positions on different layers, representing the sample wells of different sources in the same layer by different colors, then importing the ascertained reserve vectorization data of each layer system reservoir stratum into the double fox software, the range of the reservoir reserves of the strata series on the plane is shown in the graph, the oil source of the reservoir area is determined according to the oil source determined by the typical crude oil sample of each strata series, and are respectively placed in different layers under the reservoir layers of each layer system according to different sources of the ascertained reserves, and the ascertained reserves of different sources are expressed by different colors, and determining the oil gas source of the ascertained reserves of each layer of reservoir in the block, and sequentially determining the oil gas source of the ascertained reserves of each layer of reservoir in the range of raw oil depression for supplying hydrocarbon.
First, the ascertained reserve sources of the oil fields determined to contribute to all the oil sources of the marzen's depressions are allocated, such as the marzen's oil field, the wang house oil field, the octahedral river oil field, the kukuri oil field, and the like. The ascertained reserves of the reservoir in the sand four sections are 8802.06 ten thousand tons, and the crude oil of the ascertained reserves is determined to be from the effective hydrocarbon source rock in the sand four sections through oil source comparison (as shown in fig. 4). The ascertained reserves of the three-section sand reservoir are 16066.23 ten thousand tons, and the ascertained reserves of the source oil from the four-section sand reservoir are 6401.03 ten thousand tons and the ascertained reserves of the source oil from the three-section sand reservoir and the four-section sand reservoir are 9665.2 tons (as shown in fig. 5) according to the relation of oil sources of the crude oil samples sampled from the layer series reservoir. And sequentially determining the exploratory reserve sources of the sand second section, the sand first section, the Dongying group, the Liangpottery group and the Ordovician reservoir stratum. Finally, the ascertained reserve source composition of each series of reservoirs is superimposed on a graph (as shown in fig. 6), so that the origin and the reserve configuration of the oregano depression oil gas can be clearly shown, the oregano depression provides 45024.86 ten thousand tons of oil ascertained reserve, the single-source reserve of sand four is 33754.66 ten thousand tons, and the origin reserve of the mixed source of sand three sand four is 11270.2 ten thousand tons. According to the quantitative calculation of the mixed source oil, the mixed source oil contribution proportion of the sand four-section effective hydrocarbon source rock is 48%, and the mixed source oil contribution proportion of the sand three-section effective hydrocarbon source rock is 52%. Therefore, the blending source oil contribution reserve of the sand three-section effective hydrocarbon source rock is 5860.5 ten thousand tons, and the blending source oil contribution reserve of the sand four-section effective hydrocarbon source rock is 5409.7 ten thousand tons. The bougainvine exploration reserves of the cattle are 45024.86 ten thousand tons, the source reserves of the four sand causes are 39164.36 ten thousand tons, the source reserves of the three sand causes are 5860.5 ten thousand tons, and the mixed source oil is mainly provided by the four sand sections of effective hydrocarbon source rocks.
The stratified system lists different sources of the ascertained reserves of the depressed and sunk oil fields of the cattle farm to form a statistical table, the contribution proportion of each set of hydrocarbon source rock can be clearly shown, and then the oil-gas enrichment rule is summarized: the nizhuang depression has proved that the crude oil mainly comes from the sand four-section high-quality hydrocarbon source rock, and the oil gas is mainly enriched on the central shallow layer of the north part, the depression with the sand three sections, the south slope zone and the edge bulge.
The green oil recess may include one or more green oil dimples. The raw oil depressions are expanded to raw oil depressions, the composition of the ascertained oil reserves of each raw oil depression is determined, and the quantitative allocation of the ascertained oil reserves of the whole raw oil depression is further determined.
Although the embodiments of the present invention have been described above, the above description is only for the convenience of understanding the present invention, and is not intended to limit the present invention. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A quantitative allocation method for exploring reserve source constitution of crude oil depression is characterized by comprising
Determining an effective source rock and hydrocarbon supply range for the green oil pits;
determining the source composition of the ascertained reserves in the range of the crude oil pit for hydrocarbon supply, and representing the quantitative configuration of the ascertained reserves in the range of the crude oil pit for hydrocarbon supply;
and determining the oil-gas accumulation rule of the crude oil pit according to the quantitative configuration formed by the reservoir sources in the hydrocarbon supply range of the crude oil pit.
2. The quantitative allocation method for exploration of reserves of oil pits as claimed in claim 1, wherein hydrocarbon source rock evaluation is performed according to hydrocarbon potential analysis of oil pits and combining geochemical characteristics of hydrocarbon source rock to determine effective hydrocarbon source rock and corresponding biomarker compound characteristics of oil pits.
3. The quantitative allocation method for reservoir source composition of crude oil recess exploration according to claim 2, characterized in that crude oil in each series of reservoir of crude oil recess is sampled, crude oil sample chromatography-mass spectrometry is performed, and single source crude oil and mixed source oil in each series of reservoir of crude oil recess are determined through crude oil type division and oil source comparison.
4. The quantitative allocation method for exploration of reserves composition of crude oil pits as claimed in claim 3, wherein the hydrocarbon supply range of crude oil pits is determined by using the change rule of geochemical indexes or biochemical parameters of crude oil migration according to effective hydrocarbon source rocks of crude oil pits, oil source comparison and geochemical characteristic analysis, and combining the characteristics of biomarker compounds and geological characteristics of the effective hydrocarbon source rocks.
5. The method of claim 4, wherein the source of the ascertained reserves in the hydrocarbon supply range of the green oil pit comprises ascertained reserves of single-source crude oil and commingled-source oil of each of the plurality of strata.
6. The quantitative allocation method for the exploration reserve source of the crude oil pit according to claim 5, characterized in that exploration reserve vectorized data of reservoir layers of each layer in the range of the crude oil pit for supplying hydrocarbon are arranged in the geological mapping system in different layers, the area of the exploration reserve of the reservoir layers of each layer is determined, the source determination of the exploration reserve is sequentially completed by layers and blocks according to the analysis result of the oil gas source of the reservoir layers of each layer, the oil gas source of the exploration reserve of the reservoir layers of each layer is determined, and the quantitative allocation of the exploration reserve source of the reservoir layers of each layer is realized by combining the blending source oil contribution ratio of the effective hydrocarbon source rock of the crude oil pit.
7. The method of claim 6, wherein the source of oil and gas and the reserve configuration thereof that exhibit the green oil pits are stacked.
8. The quantitative allocation method for the exploration reserve source composition of the crude oil pits according to claim 7, characterized in that crude oil samples of reservoirs with different positions are correspondingly placed on different layers, crude oil of a reservoir with the same position is placed in one layer, crude oil with different sources in the reservoir with the same position is represented by different well position symbols or different colors of the same symbol, the exploration reserve source of each block of the reservoir layer system of each layer is determined according to the different well position symbols or the different colors of the same symbol, the exploration reserve of different sources is represented by different colors, and oil gas sources of the exploration reserve of each layer system in the hydrocarbon supply range of the crude oil pits are sequentially determined.
9. The quantitative allocation method for the exploration reserve source composition of the crude oil pits as claimed in claim 8, wherein the oil source of the exploration reserve area of the block where the crude oil sample well is located is determined according to the oil source determined by the crude oil sample of each layer series of reservoirs, and the oil source is respectively placed in different layers under the reservoirs of each layer series according to the differences of the exploration reserve sources, and the exploration reserves of different sources are expressed by different colors, so as to determine the oil and gas source of the exploration reserve of each layer series of reservoirs of the block.
10. The quantitative allocation method for exploration of reserve source composition of crude oil pits as claimed in claim 5, wherein end-member oil samples are selected according to crude oil pit formation period secondary analysis results, oil and gas characteristics are combined, absolute concentrations or biochemical parameters of saturated hydrocarbon and aromatic hydrocarbon biomarkers are calculated by biomarker absolute quantitative technology, a mixed source chart is established, quantitative analysis of mixed source oil sample wells is performed, and mixed source oil contribution ratio of crude oil pit effective hydrocarbon source rock is determined.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5515932A (en) * | 1993-09-24 | 1996-05-14 | Venture Probe, Inc. | Apparatus and method for environmental surveying for contaminants in alluvial materials and bedrock formations |
| CN102289006A (en) * | 2011-07-19 | 2011-12-21 | 北京师范大学 | Continental facies deep petroleum reservoir formation and distribution mode |
| CN105259591A (en) * | 2015-10-28 | 2016-01-20 | 中国石油大学(华东) | Quantization representation method of oil source fault transporting capability |
| CN105298485A (en) * | 2015-11-13 | 2016-02-03 | 西南石油大学 | Comprehensive evaluation method for single well oil gas geology |
| CN106291695A (en) * | 2015-05-30 | 2017-01-04 | 中国石油化工股份有限公司 | Eroded Thickness computational methods |
-
2018
- 2018-07-23 CN CN201810810554.6A patent/CN110749940B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5515932A (en) * | 1993-09-24 | 1996-05-14 | Venture Probe, Inc. | Apparatus and method for environmental surveying for contaminants in alluvial materials and bedrock formations |
| CN102289006A (en) * | 2011-07-19 | 2011-12-21 | 北京师范大学 | Continental facies deep petroleum reservoir formation and distribution mode |
| CN106291695A (en) * | 2015-05-30 | 2017-01-04 | 中国石油化工股份有限公司 | Eroded Thickness computational methods |
| CN105259591A (en) * | 2015-10-28 | 2016-01-20 | 中国石油大学(华东) | Quantization representation method of oil source fault transporting capability |
| CN105298485A (en) * | 2015-11-13 | 2016-02-03 | 西南石油大学 | Comprehensive evaluation method for single well oil gas geology |
Non-Patent Citations (3)
| Title |
|---|
| 杨晓敏: "披覆构造混源油来源与富集特征", 《中国博士学位论文全文数据库 基础科学辑》 * |
| 杨进: "《环境与工程地球物理》", 31 August 2011 * |
| 薄冬梅: "东营凹陷民丰地区油气成藏系统的划分与评价", 《中国博士学位论文全文数据库 基础科学辑》 * |
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