Seismic information based method for determining coalbed methane enrichment sedimentation control effect

A technology for controlling action and seismic information, applied in seismic signal processing, seismology, geophysical measurement, etc., can solve the problems of fast lateral phase change, difficult to meet accuracy, unclear lithological boundary, etc., and achieve the effect of reliable method path
CN108680951AInactive Publication Date: 2018-10-19CHINA UNIV OF GEOSCIENCES (BEIJING)
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA UNIV OF GEOSCIENCES (BEIJING)
Publication Date
2018-10-19
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a seismic information based method for determining coalbed methane enrichment sedimentation control effect. The method uses three-dimensional seismic data, applies seismic sedimentology interpretation techniques to coal-bearing stratum, predicts sedimentary microfacies of a target interval, and predicts a trend of gas content change in the target interval in the area by using relative relationship between sedimentary and lithological changes and gas content, thereby revealing the sedimentation control effect of coalbed methane. The method introduces seismic sedimentology into studies of the coal-bearing stratum, realizes fine characterization of sedimentary facies belts distribution and lithologic boundaries, analyzes and studies the coalbed methane enrichment sedimentation control effect, and provides strong technical support for the exploration and development of favorable areas for coalbed methane enrichment.
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Description

technical field

[0001] The invention belongs to the technical field of seismic exploration and development of unconventional gas reservoirs, and relates to a method for judging the enrichment and sedimentation control of coalbed methane based on seismic information, in particular to a method for analyzing the sedimentary evolution of target intervals in the process of exploration and development and enrichment of coalbed methane It provides reliable basic data for the selection of favorable target enrichment areas for unconventional oil and gas exploration and development. Background technique

[0002] Geological structural subsidence controls the material accumulation, distribution and sedimentary characteristics of the basin. Basin types and sedimentary characteristics control the distribution of sedimentary systems and sedimentary facies. Sedimentary facies belts can be used to indicate the development scale and physical properties of reservoirs. Basin-controlled and phas...

Claims

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