Lateral Percolation and Its Effect on Shale Gas Accumulation on the Basis of Complex Tectonic Background

Figure 2

A stratigraphic column and core photos of Upper Ediacaran, Lower and Middle Cambrian of Jiangye-1 well. (a) Ediacaran Piyuancun Formation 2675 m, grey siliceous dolomite. (b) Lower Cambrian Wangyinpu Formation 2638 m, dark siliceous shale. (c) Lower Cambrian Guanyintang Formation 2546 m, dark grey siliceous shale. (d) Middle Cambrian Yangliugang Formation 2511 m, grey micrite. See Figure 1 for the location of the well site.