阿克库勒凸起奥陶系控油地质特征

阿克库勒凸起位于塔里木盆地沙雅隆起中段的南翼，奥陶系碳酸盐岩具有广阔的油气勘探前景，但受区域构造背景及储集体发育程度控制明显，油气分布不均，通过奥陶系油气藏类型及其分布，控油地质特征等方面分析，并预测了奥陶系油气藏有利成藏分布范围，认为阿克库勒凸起南部斜坡区的岩溶潜丘与强变形地带发育，并保留了有效的储集体和存在多期次的油气运聚成藏，封盖条件较好，是形成大型油气藏的有利部位。

Geologic Features of Ordovician Oil Control in Akekule Arch

Akekule arch is located in south side of middle part of Shaya uplift in Tarim basin,in which Ordovician carbonate rocks have a broad prospect for petroleum exploration.However,it is obviously controlled by regional struc-tural setting and reservoir development hence resulted in non-homogeneous oil and gas distribution.Based on analyses of the types,distribution and oil-controlled geologic features and predictions of the effective scale of Ordovician petroleum reservoir,it is considered that some effective reservoirs are developed and reserved in karst,buried hill and serious deformation zone of slope area of southern Akekule arch,and there exist multistage petroleum migration,accu-mulation and forming reservoirs with fair seal conditions,which might be a favorable area for forming a large-scale oil and gas pool.