| 西藏伦坡拉盆地古近系页岩油资源潜力初探 |
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| 关键词:Niubao Formation shale oil Lunpola Tibet |
| 基金项目:中国地质调查局二级项目(编号: DD20160026; DD20160202) |
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| 摘要: |
| A Preliminary Study of the Paleogene Shale Oil Potential in Lunpola Basin, Tibet |
| Based on the measured profile of the Paleogene Niubao Formation and Dingqinghu Formation in northwestern Jiangriacuo sag, northwest Lunpola Basin, Tibet, the authors analyzed the organic matter abundance, types and maturity of the source rocks. The Niubao Formation and Dingqinghu Formation were characterized by high organic matter abundance with the TOC values ranging from 0.91% to 5.53% and the chloroform “A” ranging from 0.03% to 0.63%. The organic matter is of type I, with average Tmax being 428℃, which suggests that the source rock is at the early stage of oil generation, and the Niubao Formation is better than the Dingqinghu Formation in this aspect. The results indicate that the Niubao Formation in the work area is the most favorable source rock. A comparison with typical shale layers in China and abroad shows that it possesses the basic geological condition of generating shale oil although the maturity is slightly lower. It is inferred that the higher maturity the deposition center of Jiangriacuo sag is the greater the shale oil potential would be. |
| CHEN Shan,LIU Bo,LIU Xu-feng,LIU Zhi-bo.2017.A Preliminary Study of the Paleogene Shale Oil Potential in Lunpola Basin, Tibet[J].Acta Geoscientica Sinica,38(5):839-846. |
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