Method and device for obtaining shale gas enrichment degree of shale block
A technology for shale gas and shale gas reservoir is applied in the field of obtaining the shale gas enrichment degree of shale blocks, and can solve the problems of complicated obtaining method and inaccurate results of the shale gas enrichment degree, etc.
Inactive Publication Date: 2020-05-19
CHINA UNIV OF PETROLEUM (BEIJING)
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[0003] There are many methods to evaluate the enrichment degree of shale gas in shale blocks at home and abroad, mainly including two-factor evaluation of favorable area method, "tornado" evaluation method, etc., but the above acquisition methods are complicated and the obtained shale blocks The results of the degree of enrichment of shale gas are not accurate enough
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[0044]In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.
[0045] Specifically, in this application, "at least one" means one or more, and "multiple" means two or more. "And / or" describes the association relationship of associated objects, indicating that there can be three types of relationships, for example, A and / or B, which can mean: A exists alone, A and B exist at the same time, and B exists alone, where A, B c...
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Embodiments of the invention provide a method and a device for acquiring the shale gas enrichment degree of a shale block. The method comprises the following steps of acquiring values of N preset parameters of the target shale block, wherein the N preset parameters are in one-to-one correspondence with N main control conditions, and the N main control conditions are N main conditions capable of influencing the shale gas enrichment degree of the target shale block; according to the values of the N preset parameters of the target shale block and the correlation among the N main control conditions in the influence of shale gas reservoir formation, determining an evaluation index of the target shale block, wherein the evaluation index is used for indicating the shale gas enrichment degree of the target shale block. The acquisition method provided by the embodiment of the invention is simple, and the accuracy of the obtained shale gas enrichment degree of the shale block is improved.
Description
technical field [0001] This application relates to unconventional oil and gas technology, and in particular to a method and device for obtaining the enrichment degree of shale gas in a shale block. Background technique [0002] Shale gas is an unconventional natural gas that hides in shale or mudstone layers in a free or adsorbed state. The evaluation of the enrichment degree of shale gas in shale gas-bearing areas (shale blocks) has important guiding significance for shale gas development. [0003] There are many methods to evaluate the enrichment degree of shale gas in shale blocks at home and abroad, mainly including two-factor evaluation of favorable area method, "tornado" evaluation method, etc., but the above acquisition methods are complicated and the obtained shale blocks The result of enrichment degree of shale gas is not accurate enough. Contents of the invention [0004] Embodiments of the present application provide a method and device for obtaining the enric...
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IPC IPC(8): G01N33/24
CPCG01N33/24
Inventor 罗群王井伶吴安彬罗家国
Owner CHINA UNIV OF PETROLEUM (BEIJING)