低渗透高含水长2油藏精细注水调控技术探索与实践

Exploration and practice of fine water injection control technology in low permeability and high water cut C2 reservoir

延长油田是属于典型的“低压、低孔、低渗”砂岩油藏,资源禀赋差,曾长期依靠自然能量开采。针对低渗透高含水长2油藏开发的制约因素,以地处安塞区的毛庄科油田主采延长组长2段的油藏为例,阐述采用精细注采调控注水开发技术,并结合研究区内油藏开发生产实际,进行了大量的研究与实践,系统建立低渗透、高含水油田技术对策和稳产方案,实现了低渗透油藏高效开发。

Yanchang Oilfield is a typical“low pressure,low porosity,and low permeability”sandstone reservoir with poor resource endowment.It has long relied on natural energy for exploitation.This article focuses on the constraints of the development of low permeability,high water cut,and Chang2 oil reservoirs.Taking the main production section of Yanchang 2 in Maozhuangke Oilfield,located in Ansai District,as an example,it elaborates on the use of fine injection and production control water injection development technology,and combines it with the actual development and production of oil reservoirs in the research area,A large amount of research and practice have been conducted to systematically establish technical countermeasures and stable production plans for low permeability and high water cut oil fields,achieving efficient development of low permeability oil reservoirs.