| 塔里木盆地不整合油气藏特征 |
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| 引用本文： | 张守安,杨克明.塔里木盆地不整合油气藏特征[J].海洋地质与第四纪地质,1996,16(3):91-100. |
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| 作者姓名： | 张守安 杨克明 |
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| 作者单位： | 湖北荆沙地质矿产部石油地质综合大队 |
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| 基金项目： | 国家“八五”重点科技攻关项目 |
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| 摘 要： | 塔时木盆地是我国最大内陆盆地，在地史上经历了多次构造运动的改造，形成了多期不整合面，这些不整合面对油气的运移和聚集作用十分显著，有众多与不整合有关的油气藏的形成和分布，显示了巨大的油气勘探前景。
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| 关 键 词： | 塔里木盆地 油气藏 晚期成藏 油气勘探 |
CHARACTERISTICS OF UNCONFORMITY POOLS IN TARIM BASIN OF CHINA |
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| Zhang Shouan Yang Keming Gou Huawei Chen Zhiheng Han Ping.CHARACTERISTICS OF UNCONFORMITY POOLS IN TARIM BASIN OF CHINA[J].Marine Geology & Quaternary Geology,1996,16(3):91-100. |
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| Authors: | Zhang Shouan Yang Keming Gou Huawei Chen Zhiheng Han Ping |
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| Abstract: | Tarim Basin,which has experienced many geological events,has many unconformi-ties,These unconformities are closely related to hydrocarbon,Therefore,there are vari-ous types of unconformity pools distributed in the basin. These pools have the followingcharacteristics. 1.Paleo-uplift, paleo-slope and the basin margin,with truncation and onlap uncon-formity, are favourable zones for the formation of the unconformity pools.2.Important hydrocarbon- controlling unconformities in the basin are : unconformity(at the bottom of the Carboniferous), unconformity(at the bottom of theMesozoic), unconformity (at the bottom of the Jurassic),unconformity (at the bot-tom of the Cretaceous)and unconformity (at the bottom of Miocene). 3.The formation of unconformity hydrocarbon pools depends upon unconformitytype,unconformity trap,source rock,reservior,seal,faulting and tectonic deformationsetc. However,it is the seal and reconstruction of confining layer that most directly con-trol the formation of the unconformity hydrocarbon pools.4.Unconformity closures formed before the main stage of accumulation arefavourable to entrapment of hydrocarbon,while those formed after hydrocarbon accumu-lation are unfavourable. 5.The preservation of entrapment depends on intensity of later tectonic movement.If it is weak,the entrapment is well preserved,otherwise ,it could be hardly preserved,6.Unconformity hydrocarbon pools in Tarim Basin are clearly characterized by mul-tiple types,high output and wide distribution ,which is closely related to unique geologi-cal conditions such as superimposed complex, multiperiodic regional hydrocarbon-con-trolling unconformities and rich hydrocarbon resources. |
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| Keywords: | Tarim Basin unconformity hydrocarbon seal |
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