库车坳陷克拉苏构造带东西构造差异及油气成藏

克拉苏构造带是库车前陆盆地天然气成藏的最有利区带,背斜构造油气藏是该区主要的勘探类型,但未钻探的圈闭中,背斜圈闭落实程度较低,难以提供有利钻探目标。对克拉苏构造带东西构造变形差异进行分析,结合克拉苏构造带天然气成藏的特征,在已有的断背斜、断鼻成藏模式的基础上,提出揉皱(断)背斜、压力不均衡2种新气藏类型。

The Tectonic Difference from the East to West and Its Hydrocarbon Accumulation of Kalasu Tectonic Belt in Kuqu Depression

Kelasu tectonic belt was a beneficial area of forming a gas reservoir in Kuqa foreland basin.Anticlinal structural reservoir was the main type of reservoir exploration.But in non-drilled traps,determined anticlinal traps were less,thus it was difficult to provide a beneficial exploration target.The structural difference from east to west was analyzed in the tectonic belt.In combination with the characters of gas reservoir formation in tectonic belt,faulted anticline and uneven pressure reservoirs are proposed on the basis of existed anticline,fault-nose reservoir forming patterns.