Quantitative evaluation method and device for shale gas reservoir fracturing fracture network parameters

A fracture network and shale gas reservoir technology, applied in data processing applications, electrical digital data processing, special data processing applications, etc., can solve problems such as unproposed solutions, achieve high precision and reduce determination errors

Active Publication Date: 2021-12-10
CHINA UNIV OF PETROLEUM (BEIJING)
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] For the above complex production scenarios, it is often difficult to accurately determine the fracture parameters of the discrete fracture network in the reservoir area after fracturing based on existing methods
[0004] For the above problems, no effective solution has been proposed

Method used

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  • Quantitative evaluation method and device for shale gas reservoir fracturing fracture network parameters
  • Quantitative evaluation method and device for shale gas reservoir fracturing fracture network parameters
  • Quantitative evaluation method and device for shale gas reservoir fracturing fracture network parameters

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Embodiment Construction

[0048] In order to enable those skilled in the art to better understand the technical solutions in this specification, the technical solutions in the embodiments of this specification will be clearly and completely described below in conjunction with the drawings in the embodiments of this specification. Obviously, the described The embodiments are only some of the embodiments in this specification, not all of them. Based on the embodiments in this specification, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of this specification.

[0049] refer to figure 1 As shown, the embodiment of this specification provides a quantitative evaluation method for fracture network parameters of shale gas reservoir fracturing. Wherein, when the method is specifically implemented, the following contents may be included:

[0050] S101: Obtain the production data of the flowback stage and the production dat...

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Abstract

The invention provides a quantitative evaluation method and device for shale gas reservoir fracturing fracture network parameters. On the basis of the method, preset normalization processing can be performed on acquired production data of a flowback stage and production data of a production stage of a target area to obtain normalized production data of the flowback stage and normalized production data of the production stage; a first crack network parameter based on flow characteristics is determined according to the normalized production data in the flowback stage; according to the normalized production data in the production stage, a linear analysis function of a matrix linear flow stage under the discrete fracture network of the target area is constructed; a second crack network parameter is determined according to the function; and the target crack parameter of the discrete crack network of the target area is accurately determined by comprehensively utilizing the first crack network parameter and the second crack network parameter and combining the normalized production data in the flowback stage and the normalized production data in the production stage.

Description

technical field [0001] This manual belongs to the technical field of oil and gas development, and in particular relates to a quantitative evaluation method and device for fracturing fracture network parameters in shale gas reservoirs. Background technique [0002] Usually, during oil and gas development, it is necessary to perform horizontal well volume fracturing on the reservoir area first, so that artificial fractures filled with proppant can be formed in the near wellbore area. After the volume fracturing of the horizontal well, for the reservoir area with strong natural fractures, the induced fractures formed by the shear slip of the natural fractures will also develop on a large scale near the wellbore. Therefore, after fracturing, the fracturing fluid is likely to remain in artificial fractures, induced fractures, and the matrix near the fractures, which needs to be flowed back before production. [0003] For the above-mentioned complex production scenarios, it is of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/20G06F30/28G06Q50/02G06F113/08G06F119/14
CPCG06F30/20G06F30/28G06Q50/02G06F2113/08G06F2119/14
Inventor 贾品
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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