吉木萨尔凹陷东斜坡区油气成藏分析  

Oil and gas reservoir - forming analyses in east slope region of Jimusaer Sag.

作　　者：廖健德[1] 罗力崇[2] 吴运强[1] 赵增义[1] 康素芳[1] 刘翠敏[1] 

机构地区：[1]新疆油田分公司勘探开发研究院 [2]新疆油田分公司准东采油厂

出　　处：《油气地质与采收率》2005年第4期52-54,i0006,共4页Petroleum Geology and Recovery Efficiency

摘　　要：对准噶尔盆地吉木萨尔凹陷东斜坡区二叠系和石炭系油气地球化学特征、成因及其成藏条件、期次和时间进行分析,油气源对比表明该区原油分为两类:第一类原油来源于吉木萨尔凹陷石炭系烃源岩;第二类原油来源于吉木萨尔凹陷二叠系平地泉组烃源岩。成藏条件分析认为吉木萨尔凹陷东斜坡区具有优越的烃源条件,二叠系砂岩、砂砾岩储层和石炭系的火山岩储层发育,圈闭形成时间早于油气形成期。包裹体均一温度研究表明该区二叠系梧桐沟组油藏为两期成藏,油气成藏时间分别为晚侏罗纪和晚白垩纪一早第三纪。The geochemical characteristics,origin and reservoir-forming conditions, stage -times and time of oil and gas in Permian and Carboniferous system in east slope region of Jimusaer Sag at Zhungeer Basin were analyzed. Hydrocarbon - to - source correlation shows that the crude oil in this region can be classified into two types; the first type of crude oil came from the source rocks of Carboniferous, in Jimusaer Sag and the second was from the source rocks of Pingdiquan Formation,Permian, in the sag. According to the analysis of reservoir- forming conditions, it was shown that the east slope was of good hydrocarbon source condition; the reservoirs of sandstones and sand - conglomerates in Permian and pyroid rocks in Carboniferous system were developed; and trap formation was earlier than hydrocarbon generation time. The study of homogenization temperature of inclusions shows that Wutonggou Formation reservoir of Permian were formed at two separate stages, and the reservoir of Wutonggou Formation was formed at Later Jurassic and the Later Cretaceous-Early Tertiary.

关 键 词：原油成因 成藏条件 成藏时间 成藏模式 吉木萨尔凹陷 

分 类 号：TE122.31[石油与天然气工程—油气勘探]