The characteristics of nanopores in shale gas reservoir of Wufeng Formation in Nanchuan and Qijiang, Chongqing

摘要

Together with the overlying Longmaxi Formation, the shale reservoir of Wufeng Formation in Sichuan basin has good resource potential for shale gas.The characteristics of shale pore structure of Longmaxi Formation reservoir have got sufficient research.But specialized study of Wufeng Formation is still less.Taking samples of Wufeng Formation in Chongqing Nanchuan and Qijiang, the characteristic of shale reservoir pores and microfissures were observed and tested by methods of mercury intrusion,low temperature nitrogen adsorption and field emission scanning electron microscopy experimental techniques.