| 川西坳陷碎屑岩大中型气田形成条件 |
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| 引用本文： | 李书兵,叶军,陈昭国.川西坳陷碎屑岩大中型气田形成条件[J].成都理工大学学报(自然科学版),2005,32(1):41-45. |
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| 作者姓名： | 李书兵 叶军 陈昭国 |
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| 作者单位： | 成都理工大学能源学院,成都,610059;中国石化西南分公司,成都,610081;中国石化西南分公司,成都,610081 |
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| 摘 要： | 川西坳陷上三叠统厚大的煤系地层提供了丰富的烃源,燕山期发育的三个北东东向古隆起为油气的早期富集奠定了基础,晚三叠世和侏罗纪发育的河道和三角洲砂体提供了良好的储层,前陆盆地形变形成的破裂构造为深层气源运移至浅层提供了良好的通道,有利储集相带与构造的有机配合形成了多种类型的圈闭,这些便构成了川西坳陷大中型天然气田形成的主要条件,可归纳为"一丰四适",即:丰富的油气资源,适时的古隆起、适宜的沉积相带、适中的变形、适合的构造组合形态.
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| 关 键 词： | 川西坳陷 碎屑岩 大中型气田 成藏条件 |
| 文章编号： | 1671-9727(2005)01-0041-05 |
| 修稿时间： | 2004年7月8日 |
Formation conditions of middle to large clastic gas fields in West Sichuan Basin, China |
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| LI Shu-bing.Formation conditions of middle to large clastic gas fields in West Sichuan Basin, China[J].Journal of Chengdu University of Technology: Sci & Technol Ed,2005,32(1):41-45. |
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| Authors: | LI Shu-bing |
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| Institution: | LI Shu-bing~ |
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| Abstract: | More than ten middle to large clastic gas fields were discovered in West Sichuan Basin after 40 years exploration. An elementary study on these fields indicates that abundant hydrocarbon resources, advantageous sedimentary facies, moderate deformation and optimized combination of structures and reservoirs are the characteristic formation conditions of middle to large clastic gas fields in West Sichuan Basin.Thick coal and carbonaceous mudstones in Upper Triassic provided abundant hydrocarnon resources; three NEE trending paleo-uplifts formed in Yanshania laid a foundation for early gas accumulation; channel and delta sands developed in late Triassic and Jurassic provided good reservoirs; faults and fracture zones formed during foreland basin deformation provided channels for hydrocarbon migrating from deep soure rocks to shallow reservoirs; optimized combination of structures and reservoirs formed various traps . |
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| Keywords: | West Sichuan Basin clastics middle to large gas field formation condition |
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