Group classification of mixed oils in central Junggar Basin,Northwest China and their migration  

作　　者：WANG Xulong SHI Xinpu CAO Jian LAN Wenfang TAO Guoliang HU Wenxuan YAO Suping 

机构地区：[1]PetroChina Xinjiang Otlfield Company, Xinjiang, Karamay 834000, China [2]State Key Laboratory for Mineral Deposits Research, Department of Earth Sciences, Nanjing University, Nanjing 210093, China [3]Wuxi Research Institute of Petroleum Geology, SINOPEC, Wuxi 214151, China

出　　处：《Chinese Journal Of Geochemistry》2010年第4期375-382,共8页中国地球化学学报

基　　金：funded by the National Natural Science Foundation of China (Grant Nos. 40602014 and 40872086)

摘　　要：The produced oils in central Junggar Basin are commonly mixed in origin.In this paper,in order to reveal this complexity and thereby provide valuable clues to the study of oil source and formation mechanism,genetic groups of the mixed oils were classified and their migration/accumulation was investigated.Based on the artificial oil mixing experiments,some representative biomarkers of the mixed oils showed varying tendencies according to mixing ratios of the oils.Hence,these biomarkers are useful for determining the origin of the mixed oils.According to the criteria,oils in the area were divided into four basic groups,i.e.,the Lower Permian Fengcheng oil,the Middle Permian Lower Wuerhe oil,the Jurassic source derived oil,and the mixed oil(including the Lower and Middle Permian mixed oil and the Permian and Jurassic mixed oil).Oil migration and accumulation were discussed in combination with the geological background.The produced oils in central Junggar Basin are commonly mixed in origin.In this paper,in order to reveal this complexity and thereby provide valuable clues to the study of oil source and formation mechanism,genetic groups of the mixed oils were classified and their migration/accumulation was investigated.Based on the artificial oil mixing experiments,some representative biomarkers of the mixed oils showed varying tendencies according to mixing ratios of the oils.Hence,these biomarkers are useful for determining the origin of the mixed oils.According to the criteria,oils in the area were divided into four basic groups,i.e.,the Lower Permian Fengcheng oil,the Middle Permian Lower Wuerhe oil,the Jurassic source derived oil,and the mixed oil（including the Lower and Middle Permian mixed oil and the Permian and Jurassic mixed oil）.Oil migration and accumulation were discussed in combination with the geological background.

关 键 词：准噶尔盆地 混合油 分类 移民 生物标志物 中国 西北 形成机理 

分 类 号：P618.130.2[天文地球—矿床学] TS224.4[天文地球—地质学]