| 库车坳陷西部构造圈闭形成期与烃源岩生烃期匹配关系探讨 |
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| 引用本文： | 万桂梅,汤良杰,金文正,杨文静,余一欣,王清华,彭更新,雷刚林.库车坳陷西部构造圈闭形成期与烃源岩生烃期匹配关系探讨[J].地质学报,2007,81(2):187-196. |
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| 作者姓名： | 万桂梅 汤良杰 金文正 杨文静 余一欣 王清华 彭更新 雷刚林 |
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| 作者单位： | 1. 中国石油大学盆地与油藏研究中心,北京,102249;石油天然气成藏机理教育部重点实验室,北京,102249
2. 中国石油天然气股份有限公司塔里木油田分公司,新疆库尔勒,841000 |
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| 基金项目： | 国家自然科学基金项目(编号40672143、40472107、40172076)，国家“973”计划项目(编号2005CB422107、G1999043305)，中国石油塔里木油田分公司研究项目(编号41004050009)联合资助成果。 |
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| 摘 要： | 根据库车坳陷西部地质剖面分析其构造圈闭类型,利用平衡剖面和生长地层分析构造圈闭形成期次。选取大北1井和一口人工井,应用PRA公司的BasinMod1-D软件,对其进行烃源岩成熟度史模拟,分析烃源岩的主要生烃期。根据构造圈闭形成期与烃源岩主要生烃期的匹配关系,认为西秋里塔格构造带盐下古构造圈闭与拜城凹陷烃源岩生烃期匹配良好,形成的油气藏大部分在后期保存良好,盐上圈闭可能形成油藏,盐层内部圈闭可能形成油藏、气藏或油气藏,在较厚盐层之下的圈闭可能会形成气藏。克拉苏构造带古构造圈闭与克拉苏构造带烃源岩主要生烃期以及拜城凹陷的主要生油期匹配良好,可以形成良好的油气藏,但是库车组沉积末期—第四纪构造破坏严重,油气藏经受构造调整、破坏和再分配形成残余油气藏、次生油气藏,此时正处于侏罗系烃源岩生气期,可以在盐下形成大量气藏。
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| 关 键 词： | 库车坳陷西部 构造圈闭 生烃期 平衡剖面 生长地层 |
| 修稿时间： | 2006年12月10 |
Control of Salt-Related Tectonics on Oil and Gas Accumulation in the Western Kuqa Depression |
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| WAN Guimei,TANG Liangjie,JIN Wenzheng,YANG Wenjing,YU Yixin,WANG Qinghu,PENG Gengxin,LEI Ganglin.Control of Salt-Related Tectonics on Oil and Gas Accumulation in the Western Kuqa Depression[J].Acta Geologica Sinica,2007,81(2):187-196. |
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| Authors: | WAN Guimei TANG Liangjie JIN Wenzheng YANG Wenjing YU Yixin WANG Qinghu PENG Gengxin LEI Ganglin |
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| Abstract: | According to interpretation of seismic data in the western Kuqa Depression, we analyze the style of salt-related tectonics. We analyze the formation stage of salt-related tectonics through balanced section. The formation stage can be divided into two stages: the stage before the end of E1-2 deposition, and the end of the Himalayan movement. We make two manual wellsand to model their source rock's maturity history by BasinMod 1-D of the PRA company. Through analyzing the matching of the formation stage of salt-related tectonic traps and the stage of hydrocarbon generation, we consider that there can be good hydrocarbon reservoirs in Kelasu tectonic belt since the formation stage of the paleotectonics traps match the stage of hydrocarbon generation in the Kelasu tectonic belt and Baicheng sag. However, these hydrocarbon reservoirs were destroyed seriously at the end of the Himalayan and formed irreducible hydrocarbon reservoir and secondary hydrocarbon reservoir after they were regulated and destroyed by tectonic movement. The trap below thick salt layer can be gas reservoir near the Baicheng sag. The formation stage of paleotectonics traps in the Qiulitage tectonic belt match the stage of hydrocarbon generation in the Baicheng sag and the formed hydrocarbon reservoirs were conserved well. Above salt layers, there can form faulted anticline oil reservoir or anticline oil reservoir. There can form gas reservoir below thick salt layer. |
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| Keywords: | Kuqa Depression salt-related tectonics salt-related tectonic trap formation stage maturation history |
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