A Cause Analysis of the High-Content Nitrogen and Low-Content Hydrocarbon in Shale Gas: A Case Study of the Early Cambrian in Xiuwu Basin, Yangtze Region

Figure 8

A detachment layer widely developed at the bottom of the lower Cambrian Wangyinpu formation shale in Xiuwu Basin. Core photos at the bottom of the lower Cambrian Wangyinpu formation: (a) in Jiangye-1 (depth: 2670 m) and (b) in Jiangye-2 (depth: 3135 m). (c) A photo of Laozhuang Outcrop at the bottom of the lower Cambrian Wangyinpu formation. See Figure 1 for the well locations.

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(b)

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