Geology and engineering integrated method for identifying and predicting favorable zones of remaining gas abundance

By constructing a three-dimensional geological and geomechanical model, combined with seismic inversion and fracturing simulation, the problem of multi-factor combination in evaluating the distribution of residual gas in shale gas reservoirs was solved, and the accurate identification and efficient development of areas with favorable residual gas abundance were achieved.

CN122674585APending Publication Date: 2026-09-01CHINA PETROLEUM & CHEMICAL CORP +2
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Patent Information

Application Number
CN202610870605.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-06-16
Publication Date
2026-09-01

AI Technical Summary

Technical Problem

Current technologies for evaluating the distribution of residual gas in shale gas reservoirs often focus on a single geological or engineering perspective, failing to effectively combine the influence of multiple geological and engineering factors, resulting in insufficient accuracy in identifying favorable areas for residual gas.

Method used

Using an integrated geological and engineering approach, a three-dimensional geological model and a geomechanical model were constructed. Combined with seismic inversion, fracturing construction data, and rock mechanics data, fracturing simulation and numerical simulation were performed to identify areas with favorable residual gas abundance.

Benefits of technology

It improves the accuracy of identifying areas with favorable remaining gas abundance, guides well location deployment and fracturing measures, improves gas reservoir development efficiency and economic benefits, and reduces ineffective investment.

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Abstract

The application discloses a method for identifying and predicting a favorable area of remaining gas abundance based on integration of geology and engineering, and the method comprises the following steps: constructing a three-dimensional geological model and a three-dimensional geomechanical model, using a UFM model, combining with geological characteristic parameters, considering natural fractures and inter-fracture influences, and performing fracturing simulation analysis on artificial fracturing parameters of a well subjected to hydraulic fracturing; based on the three-dimensional geological model and the three-dimensional geomechanical model, the fracturing simulation production well fracturing section fracturing parameter and the well production dynamic data in previous years are counted, imported into a model for numerical simulation, and production dynamic history matching is performed; based on the numerical simulation result, the remaining gas abundance distribution in a research area is extracted, the remaining gas distribution map is compared with a remaining pressure distribution range, and the favorable area of the remaining gas abundance is determined. The scheme improves the identification and prediction precision of the high-value area of the remaining gas abundance in a shale gas reservoir, and further improves the development efficiency and economic benefits of the gas reservoir.
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