伊拉克库尔德地区油气藏类型及分布特征

Oil and gas reservoir types in Kurdish region of Iraq and its distribution characteristics

伊拉克库尔德地区属于扎格罗斯盆地北段,为全球常规油气资源最富集的前陆盆地。通过详细分析该地区典型油气藏的形成环境、构造特征,认为受挤压构造环境下的前陆盆地演化影响,库尔德地区处于前陆盆地不同部位的油气藏类型不同,可划分为不受断层控制的油气藏和受断层控制的油气藏两个大类别,进一步分为七个子类别,其中库尔德地区油气有利勘探目标为基尔库克地块低褶皱带的逆冲背斜构造圈闭和下盘背斜构造圈闭;摩苏尔地块低褶皱带的低幅度背斜构造和转换断层构造有利于油气富集,但勘探程度较低,是未来油气勘探重点目标。

Kurdish region of Iraq belongs to the northern part of Zagros basin, which is a foreland basin with the most abundant conventional oil and gas resources in the world. Through detailed analysis of the hydrocarbon accumulation environment and structural characteristics of typical oil and gas reservoirs in this region, it is believed that under the compression environment affected by the foreland basin evolution, the oil and gas reservoir types in different parts of the foreland basin are different, which can be divided into two major categories, the ones controlled by faults and the ones not controlled by faults and it is further divided into seven sub-categories, among which the thrust anticline traps and the footwall anticline traps in the folded belt of Kirkuk area are the favorable exploration targets for oil and gas, while the low-amplitude anticline and the transform fault in Mosul area is favorable for oil and gas accumulation with low exploration degree, which is the key target of oil and gas exploration in the future.