库车坳陷亚肯构造油气成藏条件分析

An Analysis of Reservoir- forming Conditions of Yaken Structure in Kuche Depression

库车坳陷亚肯构造具备较优越的油气成藏地质条件,从所处的区域构造位置看,易于形成大型油气藏,勘探亦初步证实此构造富含天然气。其源岩为坳陷内的侏罗系、三叠系;古近系至白垩系发育多套储层和多套储盖组合;圈闭类型主要为背斜型和断背斜型;断裂和不整合面是油气运移的主要通道,构造形成与生排烃期能够匹配。因此,亚肯构造具有良好的勘探前景。

Yaken structure in Kuche depression has favorable geological conditions for hydrocarbon accumulation. As Judged by its location in the geological structure, it should have the potential to form large pools and preliminary prospecting results reveal that this structure is gas rich. The Jurassic and Triassic in the depression are source rocks; several sets of reservoirs and reservoir -seal combinations exist in formations from Paleogene to Cretaceous; anticlines and faulted anticlines are the main trap types; fractures and unconformities are the main channels for hydrocarbon migration; and the time of the structure formation coincides with the time of hydrocarbon generation and migration.