| 中国中西部前陆盆地烃源岩特征与油气资源潜力分析 |
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| 引用本文： | 柳少波,宋岩,洪峰,傅国友.中国中西部前陆盆地烃源岩特征与油气资源潜力分析[J].地学前缘,2005,12(3):59-65. |
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| 作者姓名： | 柳少波 宋岩 洪峰 傅国友 |
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| 作者单位： | 中国石油勘探开发研究院,石油地质实验研究中心,北京,100083 |
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| 摘 要： | 中国中西部前陆盆地(冲断带)以发育陆相烃源岩为特征。中西部周缘和弧后前陆盆地烃源岩形成于前陆盆地沉积期,包括准噶尔西北缘、准噶尔南缘、塔里木盆地西南缘、吐哈盆地二叠系烃源岩和川西、鄂尔多斯盆地西缘三叠系烃源岩;再生前陆盆地(冲断带)烃源岩主要形成于再生前陆盆地沉积之前的三叠—侏罗系和白垩系、古近系。根据沉积环境可以将烃源岩分为被动大陆边缘海相、残留海—(泻)湖相、湖沼相、内陆坳陷淡水湖相以及内陆坳陷断陷半咸水-咸水湖相烃源岩5种类型,其中湖沼相煤系烃源岩有机质类型为III型,以产气为主,其他烃源岩有机质类型主要为II型,其次为I型,以产油为特征。中国中西部前陆盆地石油潜在资源量为89.17×108t,天然气潜在资源量为101 464×108m3,与国外典型前陆盆地相比,中国前陆盆地具有富气特征。
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| 关 键 词： | 前陆盆地 烃源岩 油气资源 |
| 文章编号： | 1005-2321（2005）03-0059-07 |
| 收稿时间： | 2005-04-02 |
| 修稿时间： | 2005-06-08 |
Characteristics and resource potential of source rocks in the foreland basins in central and western China |
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| LIU Shao-bo,SONG Yan,HONG Feng,FU Guo-you.Characteristics and resource potential of source rocks in the foreland basins in central and western China[J].Earth Science Frontiers,2005,12(3):59-65. |
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| Authors: | LIU Shao-bo SONG Yan HONG Feng FU Guo-you |
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| Abstract: | The thrust belt-related foreland basins in central and western China are characterized by non-marine source rocks.The source rocks in peripheral and retro-arc foreland basins were formed in the period when the basins were developing,such as the Permian source rocks found in the northwestern and southern Junger basin,the southwestern Tarim basin,the Tuha basin and the Triassic source rocks found in the western Sichuan and western Ordos basins.The source rocks in reactivated foreland basins were formed in the Triassic-Jurassic,the Cretaceous,and the Paleogene,before the thrust-related foreland basins were formed.Based on their sedimentary environments,all of the source rocks in the foreland basins may be classified into five types: passive continental margin marine facies,relic marine-lacustrine facies,limnetic facies,intracontinental fresh-water lacustrine facies,and intracontinental semi-saline to saline lacustrine facies.The organic matter from the limnetic coal measure is of type III and gas bearing.The organic matter from the other four types of source rocks is of type I and II and oil-bearing.Oil and gas resources in the foreland basins in the central and western China are ca.89.17×10~8 t and ca.101 464×10~8 m~3 respectively,showing that gas is enriched in Chinese foreland basins compared with foreland basins elsewhere. |
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| Keywords: | foreland basin source rock oil and gas resources |
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