摘要
塔里木盆地孔雀河斜坡区垂向上有古、中、新生界三套构造层序,平面上形成巴里英-普忠-群克、龙口-维马-开屏三个大的鼻隆,存在寒武系-奥陶系海相和侏罗系陆相两套有效烃源岩、发育古生界、中生界多套储盖组合,圈闭形成期与烃源岩生(排)烃期时空配置良好,且保存条件有利,具备形成大型油气藏的条件。位于孔雀河斜坡维马2号背斜构造上的孔雀1井在志留系中途测试获得天然气流,通过分析天然气的性质和地球化学特征,认为该区天然气的形成具有多源复合、多阶段连续的特点,属腐泥型母质形成的油型气,源岩为下古生界海相沉积岩。
There exist vertically structural sequences of Paleozoic,Mesozoic and Cenozoic in Kongquehe slope area,Tarim basin,horizontally nose-like uplifts of Baliying-Puzhong-Qunke and Longkou-Weima-Kaiping,and effective source rocks of continental Jurassic and marine Cambrian-Ordovician.Paleozoic and Mesozoic reservoir-cap rock assemblages are well developed,with good space-time configuration between trap shaped period and generation or expulsion period of hydrocarbons in source rocks and good preservation nature,which are favorable for forming large scale oil-gas reservoir conditions.Kongque-1Well,located on Weima No.2anticline structure in Kongquehe slope,has produce gas flow by drillstem test of Silurian.It is considered from analyses of the gas property and geochemical feature that formation of the gas in this area is of characteristics of multi-source composite and multi-stage continuity,belonging to petroliferous gas formed by sapropelic parent material,and marine sedimentary source rocks of Lower Paleozoic.
出处
《新疆石油地质》
CAS
CSCD
2003年第6期549-551,共3页
Xinjiang Petroleum Geology
关键词
构造层序
成藏机理
圈闭
烃源岩
Tarim basin
Kongquehe
oil source bed
gas formation
mechanism
