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Acoustic emission-based numerical simulation of tectonic stress field for tectoclase prediction in shale reservoirs of the northern Guizhou area, China

引用

Energy Geoscience 2022年第4期3卷 436-443页

作者： Zhonghu Wu Motian Tang Yujun Zuo Yili Lou Wentao Wang Hao Liu Wenjibin Sun College of Civil Engineering Guizhou UniversityGuiyangGuizhou550025China School of Qilu Transportation Shandong UniversityJinanShandong250002China Geotechnical and Structural Engineering Research Center Shandong UniversityJinanShandong250061China Mining College Guizhou UniversityGuiyangGuizhou550025China

Natural fractures,like tectoclases,are essential in the formation of shale gas reservoirs and have been the focus of study for shale gas *** provide most storage space for gas and are largely controlled by the paleo-tectonic stress field in shale reservoirs of the Niutitang Formation,northern Guizhou area,*** accurate prediction of the development and distribution of tectoclases in the reservoirs is of great significance to exploring and developing shale gas sweet spots in the *** on geological structure evolution and fracture characterization,this study is focused on factors that control the fracture development in the Niutitang Formation shale reservoirs in northern Guizhou through characterization and modeling of geomechanisms and tectonic movements.A geomechanical model is formulated for the shale reservoirs against the geological background of the *** this basis,the fractures are predicted by using the acoustic emission *** simulation results show that the development and distribution of tectoclase is controlled by fault zones,some of which have no obvious turning points with tectoclase in the middle sections being more developed and fragmented than those at the two *** of these have obvious S-shaped turning points where tectoclases are the most developed and fragmented.

关键词： Shale reservoir Tectonic stress field Numerical simulation tectoclase Acoustic emission

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