Fluid inclusions and oil charge history in the reservoirs of the Yongjin oilfield in central Junggar Basin  

作　　者：Xie Guanbao Qin Liming Zhang Zhihuan Li Wenhao 

机构地区：[1]School of Geosciences, China University of Petroleum [2]Sinopec Research Institute of Petroleum Engineering [3]State Key Laboratory for Petroleum Resources and Prospecting, China University of Petroleum

出　　处：《Chinese Journal Of Geochemistry》2013年第1期78-84,共7页中国地球化学学报

基　　金：financially supported by the National Basic Research Program(2006CB202300);National Natural Science Foundation of China(41172130)

摘　　要：In the Yongjin oilfield of southern Junggar Basin, many wells have been drilled to produce industrial oils. Based on the analysis of fluid inclusions in the reservoirs, in combination with the geological and thermal evolution, the charge history in this area has been studied. The results indicate that the Jurassic Formation and Cretaceous Formation reservoirs contain abundant oil and gas inclusions, and four types of fluid inclusions have been distinguished. According to the homogenization temperatures of the fluid inclusions, the hydrocarbons charged the Cretaceous Formation for two periods, one ranges from the Late Cretaceous period to the Eogene period, and the other ranges from the Neocene period to the present. The oil filling history is correlated with the oil source correlation analysis, which is controlled by the movement of the Che-Mo plaeo uplift. Overall, oil accumulation is characterized by the superposition of two sets of source rocks for two stages in the Shawan depression.In the Yongjin oilfield of southern Junggar Basin, many wells have been drilled to produce industrial oils. Based on the analysis of fluid inclusions in the reservoirs, in combination with the geological and thermal evolution, the charge history in this area has been studied. The results indicate that the Jurassic Formation and Cretaceous For- mation reservoirs contain abundant oil and gas inclusions, and four types of fluid inclusions have been distinguished. According to the homogenization temperatures of the fluid inclusions, the hydrocarbons charged the Cretaceous Formation for two periods, one ranges from the Late Cretaceous period to the Eogene period, and the other ranges from the Neocene period to the present. The oil filling history is correlated with the oil source correlation analysis, which is controlled by the movement of the Che-Mo plaeo uplift. Overall, oil accumulation is characterized by the superposition of two sets of source rocks for two stages in the Shawan depression.

关 键 词：准噶尔盆地南缘 流体包裹体 历史 油气充注 水库 油田 均一温度 晚白垩世 

分 类 号：P618.13[天文地球—矿床学]