Natural gas geology and exploration direction of the Cambrian Lower Canglangpu Member in central Sichuan paleo-uplift, Sichuan Basin, SW China

YAN Wei,LUO Bing,ZHOU Gang,CHEN Youlian,ZHONG Yuan,LI Kunyu,ZHOU Hongfei,ZHAO Like,HE Yuan

Fig. 8. Types of reservoir space in the Lower Member of Canglangpu Formation, Sichuan Basin. (a) Well JT1, Lower Member of Canglangpu Formation, 7021 m, oolitic limy dolomite, with dissolution caves and intercrystalline pores; (b) Well JT1, Lower Member of Canglangpu Formation, 6985 m, residual oolitic dolomite, with intercrystalline pores (bitumen found).