Shale gas exploitation stratum section grading evaluation method and device, and terminal device

Abstract

The present invention relates to the technical field of shale development, especially to a shale gas exploitation stratum section grading evaluation method and device, and a terminal device. The analytic hierarchy process and the mean square difference method are employed to calculate gas-bearing evaluation parameters, influencing the shale exploitation, in different stratum sections to integrallyobtain corresponding weight calculation values, the analytic hierarchy process and the mean square difference method are employed to calculate compressibility evaluation parameters, influencing the shale gas exploitation, in different stratum sections to integrally obtain corresponding weight calculation values, on this basis, a shale gas-bearing and compressibility evaluation equation is established, a result is calculated according to the evaluation equation to establish the shale gas-bearing and compressibility evaluation criterions and integrate the gas-bearing and compressibility evaluation criterions to establish an exploitation integration evaluation criterion of a shale gas exploitation area so as to accurately and effectively evaluate the shale gas exploitation stratum section and avoid the problem that the inaccurate evaluation causes great economical loss in the exploitation process.

Description

technical field [0001] The invention relates to the technical field of shale gas development, in particular to a method, device and terminal equipment for grading evaluation of shale gas development intervals. Background technique [0002] Shale gas is an important type of unconventional natural gas, which mainly exists in shale and its interlayers in an adsorbed or free manner. Among them, the development of shale gas needs to be evaluated for exploitability due to this existence mode, so as to avoid the problem of huge economic losses caused by blind development. The inventors have found that the existing shale gas development grading evaluation technology has the problem of low accuracy of developability evaluation. SUMMARY OF THE INVENTION [0003] In view of this, the purpose of the present invention is to provide a grading evaluation method, device and terminal equipment for shale gas development intervals, so as to accurately and effectively evaluate the developabi...

AI Technical Summary

Problems solved by technology

The inventors have found that in the existing shale gas development graded evaluation technology, there is a problem of low accuracy of developability evaluation

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