河流相正韵律厚油层注水方向研究

Water Flooding Direction Study on Fluvial Facies Normal Rhythm Thick Reservoirs

河流相的不同微相砂体具有不同物性特征,决定了其不同的产液、吸水能力及注水运动方向。在油藏精细描述的基础上,应用油藏数值模拟方法,按注水方向与河道方向的不同夹角,设计了9种布井方式。在不同生产时期以及不同的渗透率级差下,对油田河流相正韵律厚油层储层的注水方向进行研究,可知注水方向与河道的垂线夹角为26°时,最终采收率最高,而注水方向与河道方向平行时,最终采收率最低。

There are different physical property characteristics in different microfacies sandbody of fluvial facies, which determine different liquid production capacity,water intake capacity and water injection movement direction.This paper studies water flooding direction of fluvial facies normal rhythm thick reservoirs through nine well patterns on the basis of fine reservoir description, with reservoir numerical simulation method and by different angle between water flooding direction and channel direction.Ultimate recovery is the highest when the angle between water flooding direction and channel vertical lines is 26.Ultimate recovery is the lowest when water flooding direction is parallel to channel direction.