海相油气地质2018，Vol.23Issue(1)：75-82,8.DOI:10.3969/j.issn.1672-9854.2018.01.009
湘鄂西地区下寒武统牛蹄塘组页岩气聚集条件及含气性影响因素
Conditions of Shale Gas Accumulation and Gas-bearing Factors of Lower Cambrian Niutitang Formation in Western Hu'nan and Hubei
摘要
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(Romainly 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.关键词
湘西地区/鄂西地区/寒武纪/牛蹄塘组/页岩气/影响因素Key words
Western Hu'nan/Western Hubei/Cambrian/Niutitang Formation/Shale gas/Influencing factor分类
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姜生玲,毛曼,洪克岩,胡晓兰,朱亮亮,王珊珊,王茜..湘鄂西地区下寒武统牛蹄塘组页岩气聚集条件及含气性影响因素[J].海相油气地质,2018,23(1):75-82,8.基金项目
本文受国家重大专项课题"来凤咸丰及鹤峰区块复杂构造区海相页岩气勘查评价应用试验"(编号:2016ZX05034004-004)资助 （编号:2016ZX05034004-004）
