Shale gas reservoir fracture network distribution quantitative evaluation method, computer equipment and medium

By quantifying the complexity of shale reservoir fractures using fractal theory and grid covering method, the problem of ineffective quantification in existing technologies is solved, enabling effective guidance for well trajectory optimization and fracturing design, and reducing drilling risks.

CN122113709APending Publication Date: 2026-05-29CHINA NAT PETROLEUM CORP +1
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA NAT PETROLEUM CORP
Filing Date
2024-12-23
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

Existing technologies cannot effectively quantify the complexity of shale reservoir fractures in geological space, leading to frequent stuck pipe and casing deformation during drilling. Existing prediction technologies do not match actual results well and cannot effectively guide well trajectory optimization and fracturing design.

Method used

The fractal dimension of the fracture is determined by fractal theory. Combined with geostress characteristics and geometric features, the complexity of the fracture is quantified by grid covering method and linear regression method. The trajectory of horizontal well is designed to avoid intersection with the fracture, and the risk of casing deformation is identified.

Benefits of technology

It enables the quantitative evaluation of the complexity of fractures in shale reservoirs, guides well trajectory optimization and fracturing scheme optimization, reduces the risk of stuck drill and casing deformation, and is applicable to the evaluation of fracture distribution in various oil and gas reservoirs.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN122113709A_ABST
    Figure CN122113709A_ABST
Patent Text Reader

Abstract

The present application provides a shale gas reservoir fracture network distribution quantitative evaluation method, computer equipment and medium. The method comprises the following steps: S1, determining the geometric characteristics of the fractures in the geological space; S2, using the grid covering method to grid the fractures; S3, determining the fracture fractal dimension according to the griding result of the fractures; S4, determining the complexity of the fractures in the geological space according to the geometric characteristics of the fractures in the geological space and using the fracture fractal dimension. The equipment comprises at least one processor; a memory storing program instructions, the program instructions comprising instructions for executing the above method. The storage medium stores program instructions. The present application can quantify the complexity of the shale reservoir fractures in the geological space, the evaluation result can guide the shale gas well trajectory optimization and the fracturing scheme optimization design, guide the well site deployment to avoid fractures, fracturing design and fracturing construction to prevent casing deformation, and the method is flexible in form and wide in application range.
Need to check novelty before this filing date? Find Prior Art