| 莺歌海盆地DF1-1底辟断裂系统及其对天然气成藏的控制 |
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| 引用本文： | 殷秀兰,李思田,等.莺歌海盆地DF1-1底辟断裂系统及其对天然气成藏的控制[J].地球科学,2002,27(4):391-396. |
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| 作者姓名： | 殷秀兰 李思田 |
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| 作者单位： | [1]中国地质科学院地质力学研究所，北京100081 [2]中国地质大学资源学院，湖北武汉430074 |
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| 基金项目： | 国家自然科学基金项目 (No.40 10 2 0 12，No.4973 2 0 0 5 ) |
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| 摘 要： | 莺歌海盆地的巨厚充填，高地温梯度及大规模的超压流体活动等特殊的地质背景，造就了DF1－1底辟构造的独特性，其内天然气的总体特征与底辟区的断裂系统存在着密切的联系。底辟区内的超压流体活动使其上覆地层产生众多的断裂和裂缝。这些垂向上的断裂和裂隙既构成了异常压力体系能量释放的主要通道。同时也形成了天然气运多的垂向输导体系。在断裂开启过程中上升的活动流体主要取决于断裂下延的深度及断裂上延所连通的中深一浅层的渗透性砂体，因此由断裂与砂体的相互配置所构成的输导体系在DF1－1气田的成藏中起着重要的作用。根据DF1－1的成藏特点，强调断裂系统与天然气运聚的相互促进关系，建立了断裂系统与天然气成藏关系模式。
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| 关 键 词： | 莺歌海盆地 底辟断裂系统 天然气成藏 天然气运聚 异常压力体系 |
| 文章编号： | 1000-2383(2002)04-0391-06 |
Fault System and Its Control over Gas Accumulation in DF1-1 Diapir, Yinggehai Basin |
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| YIN Xiu lan ,LI Si tian ,YANG Ji hai ,ZHANG Qi ming ,TONG Chuan xin.Fault System and Its Control over Gas Accumulation in DF1-1 Diapir, Yinggehai Basin[J].Earth Science-Journal of China University of Geosciences,2002,27(4):391-396. |
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| Authors: | YIN Xiu lan LI Si tian YANG Ji hai ZHANG Qi ming TONG Chuan xin |
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| Institution: | YIN Xiu lan 1,LI Si tian 2,YANG Ji hai 3,ZHANG Qi ming 3,TONG Chuan xin 3 |
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| Abstract: | Yinggehai basin has peculiar sedimentary, tectonic and evolution model and is abundant in hydrocarbon resources. As the main and typical structure in diapir area, DF1-1 diapir develops a lot of faults and cracks, virtually related with gas accumulation. The process of formation, opening and closing of the faults in the top of the diapirs basically display the progression of the fluid/gas migration. When overpressure reached such a critical value with oil/gas accumulating and pressure increasing, faults open as the pathway of oil/gas migration. It will be more favorable if the fault cut the sandstone bodies or fractures in the overpressure area, which might result in oil/gas accumulating into these sandstone bodies (reservoirs). Therefore, faults are the fluid released pathway and sandstone bodies and fractures as reservoirs of oil/gas in DF1-1 diapir. The spatio temporal match of vertical source rocks, reservoir and seals, combined with fault system provided by diapirism, result in the formation of large DF1-1 gas field. The models about fault system and gas accumulation have also been presented and discussed. |
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| Keywords: | DF1-1 diapir fault system gas accumulation gas migration |
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