Knowledge Management System Of Guangzhou Institute of Geochemistry，CAS
Wang, Yuce1,2; Cao, Jian2; Tao, Keyu2,3; Zhang, Chenjia2; Xiang, Baoli4; Li, Erting4; Yu, Shuang5 ; Pan, Changchun5
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| Origin of heavy shale oil in saline lacustrine basins: Insights from the Permian Lucaogou Formation, Junggar Basin | |
| Source Publication | AAPG BULLETIN
 |
| ISSN | 0149-1423 |
| 2023-09-01 | |
| Volume | 107Issue:9Pages:1553-1579 |
| DOI | 10.1306/10242222027 |
| Language | 英语 |
| WOS Research Area | Geology |
| Abstract | Lacustrine shale oil is typically heavier and more viscous than marine shale oil, impeding its exploration and exploitation. Thus, identification of its origin is key to elucidating its fluidity. Here, the middle Permian Lucaogou Formation of the Jimusar sag, Jung-gar Basin, China, was used as an example to investigate this issue. The main controlling factor for the characteristics of crude oil in the Lucaogou Formation is organic matter precursor inputs and their proportions (based on coevolution of biology and environ-ment) caused by different depositional paleoenvironments be-tween the upper and lower sections of the formation. The higher b-carotane abundance and C28/C29 sterane ratio than the average for contemporary Permian organic matter indicate that the organic matter precursor of the Lucaogou Formation was a type of salt -tolerant planktonic green algae, Dunaliella. The physical properties of crude oil from this unit (density, 0.87-0.92 g & BULL;cm 3; viscosity, 33.9-551.8 mPa.s) result from high resin and asphaltene content, typical of oils generated from Dunaliella-rich organic matter. Dur-ing deposition, higher water salinity in the lower section resulted in a higher abundance of Dunaliella. For this reason, crude oil from the lower section is heavier than that from the upper section, despite the lower section being more thermally mature. The organic matter precursor in the Lucaogou Formation resulted in high-density crude oil, which is difficult to process. However, light crude oil still exists at high-maturity stages. The understanding in this study is general for the formation of heavy oils in saline lacus-trine basins. |
| WOS ID | WOS:001065578400005 |
| Indexed By | SCI |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.gig.ac.cn/handle/344008/74856 |
| Collection | 有机地球化学国家重点实验室 |
| Corresponding Author | Wang, Yuce |
| Affiliation | 1.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Organ Geochem, Guangzhou, Peoples R China 2.Nanjing Univ, Sch Earth Sci & Engn, State Key Lab Mineral Deposits Res, Nanjing, Jiangsu, Peoples R China 3.Second Inst Oceanog, Minist Nat Resources, Key Lab Marine Ecosyst Dynam, Hangzhou, Zhejiang, Peoples R China 4.PetroChina Xinjiang Oilfield Co, Res Inst Expt & Testing, Karamay, Xinjiang, Peoples R China 5.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Organ Geochem, Guangzhou 510640, Peoples R China |
| Recommended Citation GB/T 7714 | Wang, Yuce,Cao, Jian,Tao, Keyu,et al. Origin of heavy shale oil in saline lacustrine basins: Insights from the Permian Lucaogou Formation, Junggar Basin[J]. AAPG BULLETIN,2023,107(9):1553-1579. |
| APA | Wang, Yuce.,Cao, Jian.,Tao, Keyu.,Zhang, Chenjia.,Xiang, Baoli.,...&Pan, Changchun.(2023).Origin of heavy shale oil in saline lacustrine basins: Insights from the Permian Lucaogou Formation, Junggar Basin.AAPG BULLETIN,107(9),1553-1579. |
| MLA | Wang, Yuce,et al."Origin of heavy shale oil in saline lacustrine basins: Insights from the Permian Lucaogou Formation, Junggar Basin".AAPG BULLETIN 107.9(2023):1553-1579. |
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