Technologies of water shut-off and profile control: An overview

Water shut-off and profile control is an important technology for improving water flooding efficiency of seriously heterogeneous reservoir,especially for the mature reservoir with higher water-cut.New methods have been put forward and applied during the past years to meet the production demand,which made significant contribution to the mature reservoir development.This paper reviews the traditional techniques,indicates the problems need to be solved,and proposes the related tendency.For the mature reservoir chartered by higher water-cut and serious heterogeneity,the research of desirable water shut-off and profile control technologies should put emphasis on the development of depth water divert materials with lower cost and higher quality,simultaneously take efforts to investigate the corresponding mechanisms and assistant on the base of reservoir re-understanding.With such efforts the overall disadvantageous water distribution in depth reservoir can be disrupted and the improvement of water-flooding efficiency can be achieved.