| Author's Name: Jiang Shengling, Mao Man, Hong Keyan, Hu Xiaolan, Zhu Liangliang, Wang Shanshan, Wang Qian |
| Institution: Oil and Gas Exploration and Production Branch, China Huadian Green Energy Co. Ltd. |
| Abstract: |
| Based on the comprehensive evaluation of drilling, field outcrops and experimental test data, the shale in Lower Cambrian Niutitang Formation in western Hu’nan and Hubei is of good quality. The organic-rich shale in the middle and lower parts of Niutitang Formation has a large thickness(40~150m), high organic carbon content (2.0%~14.64%), and high degree of thermal evolution(Ro mainly more than 2.0%). Isothermal adsorption experiments show that Niutitang shale has a strong natural gas adsorption capacity. Field desorption experiments show that the overall gas content in Niutitang Formation is low but the nitrogen content is high. According to the comprehensive analysis, the multiple phases of tectonic movement and large-scale faults are the main factors affecting the gas-bearing capacity of Niutitang shale, while the excessive thermal evolution is a secondary factor. |
| Keywords: Western Hu’nan; Western Hubei; Cambrian; Niutitang Formation; Shale gas; Influencing factor |
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投稿时间：
2017-02-14 |
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