摘要
上扬子地区广泛发育下古生界海相页岩。研究表明：牛蹄塘组富有机质段岩性以深水陆棚相黑色炭质页岩和黑色硅质页岩为主,有机质类型以Ⅰ型为主,总有机碳含量为0.37%~11.83%,变化幅度较大,有机质成熟度为2.01%~3.11%,处于成熟—过成熟阶段,储集空间以微孔和中孔为主,连通性差。利用测井数据、等温吸附实验对页岩含气量进行分析,牛蹄塘组总含气量为0.68~6.04 m3/t。仁页2井揭示了黔西北地区下寒武统牛蹄塘组富有机质页岩具有高有机质丰度、高有机质成熟度、含气性较好的特点,表明牛蹄塘组具有较好的页岩气资源潜力。
Lower Paleozoic marine shales are widely developed in Upper Yangtze region. The research indicates that deep shelf black carbonaceous shale and black siliceous shale are the dominant lithology in Niutitang organic- rich shale formation,with Type I organic matter dominantly,TOC widely ranging in 0. 37%- 11. 83%,and the organic matter maturity of 2. 01%- 3. 11%,presenting it in mature- post- mature stage; micro pores and meso- pores are the main reservoir space with poor connectivity. Well logging and isothermal adsorption experiment data are used in analysis,showing that the total gas content of Niutitang formation is0. 68- 6. 04 m3/ t. Research on Well Renye2 reveals that the Lower Cambrian Niutitang organic- rich shale formation in Northwest Guizhou is featured by high organic abundance,high organic maturity,and favorable gas content,which illustrates better shale gas potential of Niutitang shale formation.
出处
《特种油气藏》
CAS
CSCD
北大核心
2014年第6期38-41,142-143,共4页
Special Oil & Gas Reservoirs
基金
国家自然科学基金"页岩气聚集机理和成藏条件研究"(40672087)
国家自然科学基金"风化作用对我国南方页岩含气性影响定量研究--以渝东南龙马溪组为例"(41272167)
国土资源部"全国油气资源战略选区调查与评价专项"(2009GYXQ15)
构造与油气资源教育部重点实验室青年基金项目"东濮凹陷北部沙三段泥页岩油气成藏机理研究"(TPR-2013-04)
关键词
页岩气
富有机质页岩
含气量
仁页2井
黔西北
shale gas
organic-rich shale
gas content
Well Renye2
Northwest Guizhou
