| 卡拉麦里缝合带后碰撞背景与火山岩油气藏关系探讨 |
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| 引用本文： | 吴小奇,刘德良,李振生.卡拉麦里缝合带后碰撞背景与火山岩油气藏关系探讨[J].地质科学,2010,45(4):1098-1110. |
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| 作者姓名： | 吴小奇 刘德良 李振生 |
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| 作者单位： | 1.中国科学技术大学地球和空间科学学院安徽合肥 230026；2.中国石油勘探开发研究院北京 100083；3.合肥工业大学资源与环境工程学院安徽合肥 230009 |
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| 基金项目： | 中国石油科技项目，国家自然科学基金，中国科学技术大学研究生创新基金 |
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| 摘 要： | 北疆地区卡拉麦里洋盆关闭后,两侧陆块处于松散拼贴状态,发育了陆间残余海盆,表明该缝合带是通过软碰撞作用形成的;后碰撞期,沿缝合带发育较大规模的火山活动。近年来的油气勘探表明,这些后碰撞火山岩中赋存了丰富的油气资源。本文对卡拉麦里缝合带多个火山岩油气藏的主要控制因素进行了分析,结果表明,卡拉麦里缝合带后碰撞期幔源岩浆底垫和火山活动有利地促进了该区烃源岩中有机质的热演化;后碰撞期的构造演化与石炭系烃源岩的分布、火山岩储集空间的形成和演化、油气盖层的发育等紧密相关,同时还通过断裂、不整合和反转构造等控制了油气的运移和保存,这些都为形成火山岩油气藏创造了有利条件。卡拉麦里缝合带火山岩油气藏具有良好的勘探前景,其中陆东—五彩湾地区火山岩油气藏主要位于石炭系顶面的风化壳内,滴南凸起中西部是最有利的地段,五彩湾凹陷残余构造高点也较为有利。
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| 关 键 词： | 卡拉麦里缝合带 后碰撞背景 火山活动 火山岩油气藏 |
| 收稿时间： | 2009-08-20 |
| 修稿时间： | 2010-03-11 |
Preliminary discussion on the relationship between post-collisional setting and volcanic reservoirs for oil and gas around Kalamaili suture zone |
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| Wu Xiaoqi,Liu Deliang,Li Zhensheng.Preliminary discussion on the relationship between post-collisional setting and volcanic reservoirs for oil and gas around Kalamaili suture zone[J].Chinese Journal of Geology,2010,45(4):1098-1110. |
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| Authors: | Wu Xiaoqi Liu Deliang Li Zhensheng |
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| Institution: | 1.School of Earth and Space Sciences|University of Science and Technology of China|Hefei 230026；2.Research Institute of Petroleum Exploration and Development| PetroChina|Beijing 100083； 3.College of Resources and Environmental Engineering|Hefei University of Technology|Hefei 230009 |
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| Abstract: | After Kalamaili oceanic basin closed，the bilateral landmasses were loosely connected，and intercontinental remnant oceanic basin developed，which indicated the existence of soft collisionExtensive volcanism developed in post collisional period around Kalamaili suture zoneOil and gas exploration in recent years revealed plentiful oil and gas resources in these post collisional volcanic rocksThis study analysed the main controlling factors of several volcanic reservoirs around Kalamaili suture zone，and the results indicate that post collisional volcanism and underpalting of mantle derived magmas around Kalamaili suture zone had promoted the thermal evolution of organic matters in the hydrocarbon source rocks； post collisional tectonic evolution of this suture zone was tightly connected with the distribution of Carboniferous hydrocarbon source rocks，the generation and evolution of volcanic reservoir space，and the development of cap rocks，as well as the migration and accumulation of oil and gas by faults，unconformities and reversion structuresThese were favorable for generation of volcanic reservoirs for oil and gasVolcanic reservoirs around Kalamaili suture zone have bright future for explorationThe reservoirs in Ludong Wucaiwan area mainly locate in the weathered crust in the top Carboniferous，and the most favorable district is central west Dinan uplift，while the remnant tectonic highs are also favorable. |
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| Keywords: | Kalamaili suture zone Post-collisional setting Volcanism Volcanic reservoir for oil and gas |
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