莫索湾地区白垩系油气藏的成藏特征及模式  

Accumulation Characters and Pattern of Cretaceous Lithological Reservoirs in Mosuowan Area

作　　者：靳军 李勇[2] 王熠 任江玲 丁振刚 何清波 王攀 JIN Jun;LI Yong;WANG Yi;REN Jiangling;DING Zhengang;HE Qingbo;WANG Pan(Research Institute of Experiment and Detection,PetroChina Xinjiang Oilfield Company,Karamay Xinjiang 834000,China;School of Geoscience and Technology,Southwest Petroleum University,Chengdu 610500,China)

机构地区：[1]新疆油田分公司实验检测研究院,新疆克拉玛依834000 [2]西南石油大学地球科学与技术学院,成都610500

出　　处：《重庆科技学院学报（自然科学版）》2018年第5期1-4,共4页Journal of Chongqing University of Science and Technology：Natural Sciences Edition

基　　金：国家重点基础研究发展计划(973计划)项目"致密油(页岩油)运移启动条件"(2014CB239005);国家科技重大攻关项目"岩性油气藏油气成藏主控因素与富集机理"(2017ZX05001002-003)

摘　　要：依据有关资料,综合分析准噶尔盆地莫索湾地区白垩系油气藏的成藏过程,建立其成藏模式。该区白垩系油气普遍存在生物降解,但降解程度较弱,自下而上降解程度逐渐减弱直至消失。该区白垩系油气存在多期混合成藏特征,其中主要的2次成藏时间分别发生在早白垩世和晚白垩世到渐新世。晚白垩世到渐新世为油气主要成藏期,在此期间成藏的原油与先前的生物降解油发生混合。新近纪的掀斜运动导致大量油气顺层向北调整,该区因此可形成砂泥岩薄互层等4类油气藏。The accumulation process in Mosuowan area is analyzed and accumulation model is established through geochemical data, physical properties, thin sections, inclusion temperatures and 3 - D seismic data. It can be seen from the results that low biodegradation commonly exists in Cretaceous oil and gas and decreases from bottom to top where it disappears. There exist two stages of petroleum accumulation ： the first stage happened in early Cretaceous and biodegradation also happened in this stage. The second hydrocarbon charging happened from late Cretaceous to Oligocene and hydrocarbon was mixed with degradation gas of the first stage. Tilting action of Neogene resulted in massive adjustment to the north. Reservoirs with sand -mud laminated layers, depositional filling reservoirs, reservoirs with low amplitude strutting, depositional termination reservoirs are formed in the research area.

关 键 词：准噶尔盆地 莫索湾地区 白垩系油气藏 成藏特征 成藏模式 

分 类 号：TE121[石油与天然气工程—油气勘探]