摘要
通过对凤冈二区展开的系列页岩气野外地质调查发现,区内暗色泥页岩地层共三套,分别位于奥陶系五峰组、志留系龙马溪组及寒武系牛蹄塘组。五峰组厚度较薄,仅1-8m;龙马溪组较厚,出露较多,但暗色泥页岩层较薄,主要位于龙马溪组底部,厚3-35m;牛蹄塘组仅在具合村出露,出露总厚约89.47m,暗色页岩厚度约60m。对区内出露较好的龙马溪组及牛蹄塘组进行了系统采样,做了有机碳含量、有机质成熟度等105项实验分析,对目的层页岩气有机碳含量、有机质成熟度、埋藏深度等地质条件有了较全面的掌握,为下一步有利区的圈定及后续工作的开展提供了有利依据。
The series of geological survey on shale gas in the second block of Fenggang show that there are three dark mud shale formations lying respectively in Wufeng formation of Ordovician,Longmaxi formation of Silurian and Niutitang formation of Cambrian.Wufeng formation is about 1~8mthick.Longmaxi formation is wide spread and large thickness with a small thickness of dark mudstone and shale of about 3~35mlocated at the bottom of Longmaxi Formation.Niutitang formation is only found at Juhe village with a thickness of 89.47 m.By a systematic sampling of Longmaxi formation and Niutitang formation,the authors made an experimental analysis of 105 items including organic carbon content,maturity of organic matter,which led to a fully mastery of the organic carbon content,maturity of organic matter and buried depth of shale gas in target zone and provided the foundation for delineating favorable area and the follow-up work.
出处
《江西煤炭科技》
2014年第4期137-139,共3页
Jiangxi Coal Science & Technology
关键词
页岩气
地质条件
有机碳含量
有机质成熟度
埋藏深度
shale gas
geological condition
organic carbon content
maturity of organic matter
buried depth
