| 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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| 引用本文：刘景彦,林畅松,李喜臣,刘丽军,张韬.2003.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[J].地球学报,24(5):429-434. |
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| 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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| 中文摘要:库车坳陷古近系库姆格列木组是盆地内重要的含油气层段。本文应用高精度层序地层学的理论和方法，在库车坳陷古近系库姆格列木组地层中划分出3个三级层序、14个四级层序和数十个五级层序(准层序)。四级层序中发育有冲积扇、辫状河、曲流河、辫状河三角洲和滨浅湖等沉积体系，局部地区发育下切水道、干旱盐湖、泻湖—海湾、半深湖、浊流—重力流等沉积。该组下部四级层序：Psk1、Psk5和中上部四级层序Psk7、Psk12等的砂质沉积形成区内的主力储层，主要分布在盆地北—西北缘和东—东南缘，与其上覆的泥岩、膏泥岩形成有利的储盖组合。 |
| 中文关键词:高精度层序地层 沉积体系 储层 库姆格列木组 库车坳陷 |
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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 |
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| Abstract: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. |
| keywords:high-resolution sequence stratigraphy depositional systems reservoir Kumugeliemu Formation Kuqa depression |
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