Source and commingling features of light oils from the Chepaizi uplift in the Junggar Basin,Northwest China |
| |
| Authors: | Zhihuan Zhang Liming Qin Wei Li Chunjiang Wang Nansheng Qiu Xianlong Meng Zhenying Zhang Dongshan Yuan |
| |
| Institution: | [1]State Key Laboratory of Petroleum Source and Prospecting, China University of Petroleum, Beijing 102249, China [2]SINOPEC International Petroleum Exploration and Production Corporation, Beijing 100083, China [3]West Branch of Exploration and Development Institute ofSINOPEC, Xinjiang 830011, China [4]Beijing Economic Management College, Hebei 102602, China |
| |
| Abstract: | Geochemical composition characteristics of light oils from the Tertiary in the west of the Chepaizi uplift in the Junggar basin, northwest China, are distinct from those of biodegraded oils derived from the Permian in the study area and crude oils from some adjacent oil fields such as the Chepaizi and Xiaoguai oilfields. Oil source correlation shows that light oils in the study area have similar n-alkane and isoprenoid distribution patterns and carbon isotope compositions with the coal-derived oils from the Jurassic, and display obvious discrepancy on biomarker composition characteristics with the Cretaceous source rock extracts, inferring that they are probably the mixed oils from the Jurassic coal measures and Cretaceous source rocks. In this study, combined with the geochemical data of coal-derived oils from the Jurassic and Cretaceous source rocks or crude oils from the Cretaceous, the source and commingling features of the Tertiary crude oils of Well Pai 2 and Well Pai 8 were investigated. The proportion of the two sources in the mixed crude oils was estimated, and the hydrocarbon accumulation pattern of reservoirs in the study area was established. |
| |
| Keywords: | Chepaizi uplift light oil geochemical characteristics oil source correlation commingling feature |
| 本文献已被 维普 万方数据 SpringerLink 等数据库收录！ |
|
