Shale gas-containing fault plane analysis and evaluation system based on seismic data analysis

Through the fault plane analysis and evaluation system based on seismic data analysis, the problem that traditional two-dimensional seismic analysis is difficult to characterize the three-dimensional structure of low-order faults is solved, and more accurate assessment of shale gas reservoirs and improvement of exploration efficiency is achieved.

CN119738879AActive Publication Date: 2025-04-01CHINA UNIV OF PETROLEUM (EAST CHINA)
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Patent Information

Application Number
CN202510251458.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-03-05
Publication Date
2025-04-01
Estimated Expiration
2045-03-05

AI Technical Summary

Technical Problem

Traditional two-dimensional seismic analysis methods are difficult to accurately characterize the three-dimensional structure and plane distribution characteristics of low-order sequence faults, resulting in limited evaluation and exploration efficiency of shale gas reservoirs.

Method used

Using geometric analysis and topological analysis, combined with seismic data attribute analysis, a plane analysis and evaluation system for shale gas-containing faults based on seismic data analysis is constructed through data acquisition, fault feature analysis, fault analysis and enrichment effect evaluation modules.

Benefits of technology

The understanding of the plane connectivity of shale gas faults has been improved, the understanding of the formation and distribution laws of shale gas reservoirs has been enhanced, the selection of drilling locations has been optimized, and the resource utilization and exploration efficiency have been improved.

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Abstract

The invention relates to the field of data processing systems suitable for shale gas development management and prediction, in particular to a shale gas-containing fault plane analysis and evaluation system based on seismic data analysis, which comprises a data acquisition module, a fault feature analysis module, a fault analysis module and an enrichment effect evaluation module. According to the method, the seismic data are collected and aggregated, the stratum attribute data set is generated, and the fault features are extracted and clustered, so that the revelation precision of the fault spatial distribution characteristics is improved. And a topological model is further constructed, and the connectivity is analyzed by calculating the connectivity and porosity between the intersection points, so that the understanding of the underground structure is enhanced, and the position and scale evaluation of the shale gas enrichment area is more accurate. In addition, the relation between the fault structure and the gas enrichment area is analyzed, the efficiency of the gas flow channel is calculated, and a scientific basis is provided for gas field development decision making, so that the dominant location is predicted, and the development plan is optimized.
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