| 准噶尔盆地东部石炭系火山岩气藏石油地质特征及有利勘探方向分析 |
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| 引用本文： | 王淑芳,邹才能,侯连华,卫延召,罗霞,郭召杰.准噶尔盆地东部石炭系火山岩气藏石油地质特征及有利勘探方向分析[J].地学前缘,2013,20(2):226-237. |
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| 作者姓名： | 王淑芳 邹才能 侯连华 卫延召 罗霞 郭召杰 |
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| 作者单位： | 1. 造山带和地壳演化教育部重点实验室; 北京大学 地球与空间科学学院, 北京 100871
2. 中国石油勘探开发研究院, 北京 100083 |
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| 基金项目： | 国家科技重大专项，国家自然科学基金项目 |
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| 摘 要： | 准噶尔盆地火山岩油气勘探取得重大进展。笔者经综合研究，提出影响该区天然气藏形成的石油地质主要特征是：前陆坳陷控制了烃源岩区域展布,后碰撞火山岩是主要的储层,古生代晚期的构造优化了储层物性并形成圈闭。松喀尔苏组为前陆坳陷磨拉石建造的近端粗碎屑岩沉积,是克拉美丽造山事件后快速沉积产物,作为主要烃源岩的下石炭统滴水泉组,是与松喀尔苏组同期前陆坳陷不同位置的沉积层系,滴水泉组是前陆坳陷中央的细粒沉积层系。后碰撞火山岩覆盖在前陆坳陷沉积层系之上,分布广泛,分布范围不受古生代造山带和现今构造单元控制。二叠纪发育断陷构造,形成凹隆相间的构造格局,在构造高部位的隆起区石炭系火山岩风化壳和构造裂缝,优化改善了火山岩储层的储集性能,形成有利油气运移通道和储集空间。克拉美丽山南缘的前陆坳陷中央为有利烃源岩分布区,该范围内的构造高部位的火山岩发育区,将是准噶尔盆地东部下一步火山岩油气藏勘探的有利区域。
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| 关 键 词： | 准噶尔盆地东部 火山岩气藏 前陆坳陷 控藏要素 勘探方向 |
| 收稿时间： | 2011-12-01 |
Petroleum geological characteristics of gas accumulation in carboniferous volcanics and prospect for gas exploration, Eastern Junggar Basin |
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| WANG Chu-Fang,JU Cai-Nai,HOU Lian-Hua,WEI Yan-Shao,LUO Xia,GUO Shao-Jie.Petroleum geological characteristics of gas accumulation in carboniferous volcanics and prospect for gas exploration, Eastern Junggar Basin[J].Earth Science Frontiers,2013,20(2):226-237. |
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| Authors: | WANG Chu-Fang JU Cai-Nai HOU Lian-Hua WEI Yan-Shao LUO Xia GUO Shao-Jie |
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| Abstract: | The exploration of volcanic hydrocarbon reservoir in Junggar Basin has gotten great progress.Through a comprehensive study,the major petroleum geological characteristics of gas accumulation in this area are concluded as follows: the foreland depression controlled the distribution of Lower Carboniferous hydrocarbon source rock;the post-collision volcanic rock was the main reservoir;and the subsequent reformation in the late Paleozoic improved the reservoir property and formed traps.Songkaersu Formation is mainly composed of thick coarse clastic rocks in the proximal part of foreland depression and belongs to typical molasse,which was the product of rapid deposition after Kelameili orogenic event.The main source rock,Dishuiquan Formation,and Songkaersu Formation were synchronous sedimentary sequences but deposited in different regions of foreland basin.Dishuiquan Formation is fine grained in the central part of foreland basin.The post-collision volcanic rocks directly overlaid the sedimentary sequence of foreland basin.They are widely distributed and are not controlled by Paleozoic orogenic belt or present tectonic units.In the Permian,fault-subsided structures widely developed and formed the framework of alternating upheaval and depression.Volcanic rock weathering crust and structural fracture in the uplift area of structural high part improved and optimized the quality of volcanic reservoir,and formed favorable pathways of hydrocarbon migration and traps.Favorable hydrocarbon source rocks distributed in the central foreland depression,the south margin of Kelameili Mountain.So the volcanic rock area of structural highs in this region will be the expected exploration targets of volcanic reservoir in the Junggar Basin. |
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| Keywords: | Eastern Junggar Basin volcanic gas reservoir foreland depression pool-controlling factors exploration direction |
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