低渗透油藏注采能力提升策略探析

Exploring the Strategy of Enhancing the Injection and Recovery Capacity of Low Permeability Reservoirs

针对油藏多层系叠合开发、单井注水量小、层系间地层水配伍性差等特点,低渗透油藏的注采能力提升难度较大,严重影响了油藏开发效益的问题,采取合适的方式实现低渗透油藏注采能力的有效提升刻不容缓。为此,通过从水质控制、建立适配井网、有效驱替、单井提升、停产井治理等方面开展了低渗透油藏注采能力提升策略攻关及应用,取得了良好的增产效果。

In view of the characteristics of multi-layer reservoir development,small injection volume of single wells and poor compatibility of formation water between layers,it is difficult to improve the injection and recovery capacity of low-permeability reservoirs,which seriously affects the reservoir development efficiency.In this regard,the research and application of low permeability reservoir injection and recovery capacity enhancement strategies are carried out in terms of water quality control,establishment of suitable well networks,effective replacement,single well upgrading,and treatment of shut-in wells,etc.,and good production enhancement results have been achieved.