Method and device for determining differential hydrocarbon expulsion of hydrocarbon source rock
A source rock and hydrocarbon expulsion technology, applied in the field of oil and gas exploration, can solve the problems of low reference value, no solution proposed, large error of source rock hydrocarbon expulsion, etc.
Pending Publication Date: 2022-06-07
CHINA UNIV OF PETROLEUM (BEIJING)
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However, the differential hydrocarbon expulsion of source rocks determined based on the above method often has problems such as large errors and low reference value.
[0004]
For the above problems, no effective solution has been proposed
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[0056] In order to make those skilled in the art better understand the technical solutions in this specification, the technical solutions in the embodiments of this specification will be clearly and completely described below with reference to the accompanying drawings in the embodiments of this specification. Obviously, the described The embodiments are only some of the embodiments of the present specification, but not all of the embodiments. Based on the embodiments in this specification, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of this specification.
[0057] Considering that most of the existing methods directly use mathematical statistics to estimate the differential hydrocarbon expulsion amount of the source rocks in the region, and then determine the lower limit of the hydrocarbon expulsion capacity. The applicant found that this method has a certain accuracy when applied to mari...
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The invention provides a method and device for determining the differential hydrocarbon expulsion amount of hydrocarbon source rocks, and the method comprises the steps: obtaining a plurality of hydrocarbon source rock samples of a target area, and determining the hydrocarbon generation capability of the plurality of hydrocarbon source rock samples per unit TOC; according to the hydrocarbon generation capacity of the unit TOC of the hydrocarbon source rock sample, a buried depth-based residual hydrocarbon change curve of the hydrocarbon source rock of the target area is constructed; determining hydrocarbon expulsion areas of the plurality of hydrocarbon source rocks and hydrocarbon expulsion rates of the plurality of hydrocarbon source rocks according to the residual hydrocarbon change curve; according to the hydrocarbon expulsion rates of the multiple hydrocarbon source rocks and the hydrocarbon source rock distribution characteristic parameters of the target area, the hydrocarbon expulsion amounts of the multiple hydrocarbon source rocks corresponding to the multiple TOC contents are obtained through calculation; and according to the hydrocarbon expulsion amounts of the plurality of hydrocarbon source rocks and the hydrocarbon expulsion areas of the plurality of hydrocarbon source rocks, determining the differential hydrocarbon expulsion amounts of the hydrocarbon source rocks in the target area. Therefore, the differential hydrocarbon expulsion with high reference value can be accurately determined by calculating the relative sizes of the hydrocarbon expulsion under different TOC content intervals.
Description
technical field [0001] The present specification belongs to the technical field of oil and gas exploration, and particularly relates to a method and device for determining the differential hydrocarbon expulsion amount of source rocks. Background technique [0002] Source rocks are generally considered to be the material basis and one of the main controlling factors for hydrocarbon accumulation. Therefore, when conducting oil and gas exploration and development in a region, it is often necessary to first evaluate the differential hydrocarbon expulsion of the source rocks in the region. [0003] Based on the existing methods, most of them use mathematical statistics to estimate the differential hydrocarbon expulsion of source rocks. However, the differential hydrocarbon expulsion quantities of source rocks determined based on the above methods often have problems such as large errors and low reference value. [0004] For the above problems, no effective solution has been pro...
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IPC IPC(8): G06Q50/02
CPCG06Q50/02
Inventor 姜福杰朱晨曦张鹏远黄任达
Owner CHINA UNIV OF PETROLEUM (BEIJING)