库车前陆盆地与波斯湾盆地盐构造对比研究

通过对库车前陆盆地和波斯湾盆地的盐层发育状况、盐构造特征以及盐构造与油气关系的对比研究,认为盐底辟构造与油气密切相关。库车前陆盆地勘探程度较低,应注重寻找盐底辟构造,以及与其相关的圈闭。库车前陆盆地盐构造的形成机制与波斯湾盆地下法尔斯组/加奇萨兰组相似,与霍尔姆兹组不同。根据波斯湾盆地下法尔斯组/加奇萨兰组盐构造在油气成藏中的作用,认为库车前陆盆地南部盐层较厚的地区应加强盐下勘探的力度,寻找盐下圈闭。北部山前盐层欠发育地区应注重寻找盐上圈闭,同时兼顾盐下圈闭。库车前陆盆地具有良好的三叠系和侏罗系烃源岩,应该有很广阔的勘探前景。

Comparison of Kuqa foreland basin with Persian Gulf Basin in salt tectonics

Compared Kuqa foreland basin with Persian Gulf Basin in development of salt layers,salt tectonics and the relation between salt tectonics and hydrocarbon,it is concluded that the salt diapers are relative to hydrocarbon.Searching salt diapers and related traps in Kuqa foreland basin is important.The mechanism of salt tectonic in Kuqa foreland basin is different from that of Hormuz series,but similar to that of Lower Fars series / Gachsaran Formation.Inspired by the role of salt tectonics of Lower Fars series / Gachsaran Formation in hydrocarbon accumulation,the authors considered that the exploration below salt layer should be enforced,and the traps below salt layer in the southern part of the Kuqa foreland basin would be found where salt layer is thicker.On the contrary,the traps should be found both above and below the salt layer in front of the northern mountain where salt layer is thin.The Triassic and Jurassic source rocks are rich in this area,with great exploration prospective.