Petrophysical properties of deep Longmaxi Formation shales in the southern Sichuan Basin, SW China
XU Zhonghua,ZHENG Majia,LIU Zhonghua,DENG Jixin,LI Xizhe,GUO Wei,LI Jing,WANG Nan,ZHANG Xiaowei,GUO Xiaolong
Fig. 9. P-wave velocity
(a) and S-wave velocity (b) versus quartz content of the shale samples.