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

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 no solution proposed, and achieve high accuracy and reduce determination errors.

Active Publication Date: 2022-07-29
CHINA UNIV OF PETROLEUM (BEIJING)
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  • Abstract
  • Description
  • Claims
  • Application Information

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

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Embodiment Construction

[0048] 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 persons of ordinary skill in the art without creative efforts shall fall within the protection scope of this specification.

[0049] see figure 1 As shown, the embodiments of the present specification provide a quantitative evaluation method for fracturing fracture network parameters in shale gas reservoirs. Wherein, when the method is specifically implemented, the following contents may be included:

[0050] S101: Obtain the production data of the flowba...

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Abstract

This specification provides a quantitative evaluation method and device for fracturing fracture network parameters in shale gas reservoirs. Based on this method, a preset normalization process can be performed on the acquired production data in the flowback stage and the production data in the production stage, and then the normalized production data in the flowback stage and the normalized production data in the production stage can be obtained. The normalized production data; then according to the normalized production data in the flowback stage, determine the first fracture network parameters based on flow characteristics; The linear analysis function of the matrix linear flow stage; and according to this function, the second fracture network parameter is determined; and then the above two fracture network parameters of the first fracture network parameter and the second fracture network parameter are comprehensively used, and combined with the flowback stage The normalized production data and the normalized production data of the production stage can accurately determine the target fracture parameters of the discrete fracture network in the target area.

Description

technical field [0001] The present specification 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, horizontal well volume fracturing needs to be performed on the reservoir area first, so that artificial fractures filled with proppant are formed in the near-wellbore area. After the completion of volume fracturing in horizontal wells, for reservoir areas with strong natural fractures, induced fractures formed by shear slippage of natural fractures will also develop on a large scale in the near-wellbore area. Therefore, after fracturing, the fracturing fluid has a high possibility of remaining in artificial fractures, induced fractures, and the matrix near the fractures, and needs to be flowed back before production. [0003] For the above-mentioned complex pr...

Claims

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Application Information

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Patent Type & Authority Patents(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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