四川盆地二叠系龙潭组页岩孔隙发育特征及主控因素
陈斐然,魏祥峰,刘珠江,敖明冲,燕继红

Pore development characteristics and main controlling factors of the Permian marine-continent transitional shale in the Sichuan Basin
Fei-ran CHEN,Xiang-feng WEI,Zhu-jiang LIU,Ming-chong AO,Ji-hong YAN
表1 DYS1井龙潭组与龙马溪组不同岩性覆压孔隙度数据
Table 1 Porosity data table of Longtan Formation and Longmaxi Formation under loading pressure in Well DYS1
岩性(层系)不同覆压条件孔隙度/%孔隙度/%
5 MPa10 MPa20 MPa30 MPa40 MPa50 MPa减少量压实率
煤(龙潭组)9.408.918.598.368.187.951.4515.43
炭质泥页岩(龙潭组)6.906.476.045.825.685.531.3719.86
白云质泥岩(龙潭组)5.074.804.694.584.534.480.5911.64
硅质页岩(龙马溪组)6.736.286.055.825.655.591.1416.94