A shale gas productivity prediction method based on multi-scale fault development characteristics

A technology for productivity prediction and development characteristics, applied in earthwork drilling and production, wellbore/well components, etc.

Active Publication Date: 2022-08-05
SOUTHWEST PETROLEUM UNIV +1
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Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of improving the exploration and development of shale gas, and propose a shale gas productivity prediction method based on multi-scale fault development characteristics

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  • A shale gas productivity prediction method based on multi-scale fault development characteristics
  • A shale gas productivity prediction method based on multi-scale fault development characteristics
  • A shale gas productivity prediction method based on multi-scale fault development characteristics

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Embodiment Construction

[0029] The embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0030] like figure 1 As shown, the present invention provides a shale gas productivity prediction method based on multi-scale fault development characteristics, including the following steps:

[0031] S1: According to the fault development characteristics of the area to be measured, classify the faults in the area to be measured;

[0032] S2: According to the fault classification, predict the shale gas productivity in the area to be tested.

[0033] In the embodiment of the present invention, in step S1, the specific method for classifying faults in the area to be measured is as follows: using fault distance, azimuth, fault horizon, extension length and inclination angle of the fault plane as classification indicators, and classifying faults in the area to be measured ;

[0034] Among them, the area to be tested with a fault distance greater than 30...

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Abstract

The invention discloses a shale gas productivity prediction method based on multi-scale fault development characteristics, comprising the following steps: S1: according to the fault development characteristics of the to-be-measured area, carry out fault classification in the to-be-measured area; S2: according to the fault classification, the to-be-measured area is classified. Prediction of shale gas production capacity in the region. The present invention is aimed at the research on the preservation conditions of shale gas in complex structural areas, especially on the fault distance, fault horizon, fault stage, fault dip angle, etc., to carry out classification and classification research, which is an important reference for improving the effect of shale gas exploration and development. It provides technical support and basis for the effective exploration and development of shale gas in the complex fault development area of ​​the basin margin.

Description

technical field [0001] The invention belongs to the technical field of shale gas development, and in particular relates to a shale gas productivity prediction method based on multi-scale fault development characteristics. Background technique [0002] Due to the characteristics of old age, overmaturity, structural deformation and multiple stages in the major shale gas producing areas in my country, the preservation conditions of shale gas in different regions are quite different. On the one hand, the existing methods believe that folds and faults determine the deformation of rock mass and the degree of development of natural fractures, thereby controlling the enrichment and productivity of shale gas; It is an important factor affecting the preservation conditions of shale gas layers; it is also believed that the fault level and development degree are the main reasons for the difference in shale gas enrichment preservation and productivity. For complex structural areas with ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B49/00
CPCE21B49/00
Inventor 范存辉赵圣贤石学文吴建发陈丽清石详超万远飞
Owner SOUTHWEST PETROLEUM UNIV
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