延长油田注水开发产量下降原因分析与认识

Analysis and Recognition of Reasons for the Production Decline in Water Injection Development in Ultra-low Permeability Oilfields

注水开发作为油田开发的重要手段,已被很多油田作为二次采油的核心技术所运用。本文通过分析国内延长油田注水区块的实际生产数据,依据相关量的变化情况,划分出注水开发产量变化区块,重点研究产量下降区块,对该油田注水开发区块产量下降原因进行分析,以此对特低渗透油田注水开发区块产量下降原因形成一定的认识。

Water injection development,as an important means of oilfield development,has been used by many oilfields as the core technology for secondary oil recovery.Based on the actual production data of a water injection block in an oil field in China,the water injection development output change block was divided according to the change of related parameters,and the output decline block was studied,and the reasons for the production decline in the oil field water injection development block were analyzed,which was helpful for forming a certain understanding of the reasons for the production decline in water injection development blocks in ultra-low permeability oilfields.