A method for evaluating shale oil and gas resources
A shale oil and gas and resource technology, applied in the field of geological exploration, can solve the problem of less consideration of the heterogeneity of shale reservoir storage space, less consideration of the mutual influence of oil and gas occurrence states, and inability to systematically evaluate the storage space, etc. question
Active Publication Date: 2022-01-21
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology
[0007] The existing volumetric methods mainly have the following problems: (1) The heterogeneity of the reservoir space of shale reservoirs is less considered, and the reservoir space formed by the development of organic pores and matrix pores cannot be systematically evaluated; (2) ) The volumetric model rarely considers the occurrence state of oil and gas in shale reservoirs and the interaction between them
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[0055] The present invention will be further described below in conjunction with accompanying drawing.
[0056] A method for evaluating shale oil and gas resources in this embodiment includes the following steps:
[0057] Step S10: Obtain the logging data of multiple well locations in the area to be evaluated, and obtain the resistivity curve, base value of resistivity logging curve, acoustic time difference logging curve, Acoustic time difference logging curve base value, source rock thermal maturity index, effective reservoir thickness;
[0058] According to the resistivity curve corresponding to the target layer at each well location, the base value of the resistivity logging curve, the acoustic time difference logging curve, the base value of the acoustic time difference logging curve, and the thermal maturity index of the source rock, the thermal maturity index of each well location is calculated. The curve corresponding to the distribution of the current organic matter ...
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The invention relates to a method for evaluating shale oil and gas resources, comprising: obtaining the distribution curve of the organic pore porosity along the well depth of each well position, obtaining the distribution curve of the total porosity of each well position along the well depth, and using uncertainty analysis Accumulated crude oil resources, accumulated free natural gas resources, accumulated dissolved natural gas resources, and accumulated adsorbed natural gas resources in the area to be evaluated are obtained by using the method to evaluate shale oil and gas resources. This method takes into account the heterogeneity of shale reservoir space and the overlap of oil and gas in different occurrence states occupying space in pores, and the resource evaluation results obtained are more accurate.
Description
[0001] Cross References to Related Applications [0002] This application claims the priority of Chinese patent application CN201810279388.1 entitled "A Method for Evaluation of Shale Oil and Gas Resources" filed on March 30, 2018, the entire content of which is incorporated herein by reference . technical field [0003] The invention relates to the field of geological exploration, in particular to a method for evaluating shale oil and gas resources. Background technique [0004] At present, the commonly used methods for shale gas resource evaluation at home and abroad can be roughly divided into volume method, genetic method, analogy method, statistical method and other methods. Among them, the volume method is a method to calculate the amount of oil and gas resources based on the storage space of the reservoir. The genetic analysis method is based on the evaluation method adopted after a preliminary understanding of the shale gas in the whole basin. The equilibrium accum...
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IPC IPC(8): G06Q10/06G06Q50/02
CPCG06Q10/06315G06Q10/0639G06Q50/02
Inventor 金之钧盛秀杰王鹏威吴博
Owner CHINA PETROLEUM & CHEM CORP