| 库车坳陷古近系库姆格列木组高精度层序地层分析及其油气勘探意义 |
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| 关键词:high-resolution sequence stratigraphy depositional systems reservoir Kumugeliemu Formation Kuqa depression |
| 基金项目:国家重点基础研究发展规划项目“中国典型叠合盆地层序地层分析与构造古地理岩相古地理再造”(G1999043304) |
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| High-Resolution Sequence Stratigraphic Study of the Palaeogene Kumugeliemu Formation and Its Significance in Oil-Gas Exploration in the Kuqa Depression |
| The Palaeogene Kumugeliemu Formation, a very important oil-gas bearing bed in Kuqa depression, can be divided into three 3rd order sequences, fourteen 4th order sequences and dozens of 5th order sequences or parasequences. Several kinds of depositional systems have been recognized in the 4th order sequences, such as alluvial fan deposits, fluvial and delta deposits, incised valley filling, evaporite salt lake deposit, lagoon or sea-gull deposit, flooding basin deposit, lacustrine deposit, and gravity or turbidity flow deposit. The distal alluvial fan sandy deposits, fluvial and deltaic sandy deposits and the incised valley filling of 4th order sequences Psk1, Psk5, Psk7 and Psk12 compose the major reservoirs, which are mainly distributed along the northern or northwestern margin as well as the eastern or southeastern margin of the basin. Sealed by the lacustrine mudstone or salt lake gypsum as well as the lagoon and sea gull mudstone, they serve as favorable oil gas reservoir beds. |
| LIU Jing-yan,LIN Chang-song,LI Xi-chen,LIU Li-jun,ZHANG Tao.2003.High-Resolution Sequence Stratigraphic Study of the Palaeogene Kumugeliemu Formation and Its Significance in Oil-Gas Exploration in the Kuqa Depression[J].Acta Geoscientica Sinica,24(5):429-434. |
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