Research progress of elastic particle plugging control system for high water cut reservoir
The research status of functional particle plugging control systems such as pre crosslinking,slow expansion,core-shell microsphere and environmental stimulation response are reviewed.The particle plug-ging control system can overcome the shortcomings of conventional gel plugging agent,such as high initial viscosity,not easy to pump,uncontrollable gel forming time and dilution of formation water,it has been de-veloped actively in recent years.This paper analyzes the influence of preparation method,composition,ap-plication environmental conditions,etc.of particle system on particle physical properties and swelling per-formance,discusses the mechanism of particle system in reservoir from aspects of molecular structure of particles,interaction between particles and dynamic migration behavior,and finally summarizes and pros-pects the research and application of particle plugging control system,to provide technical and theoretical support for improving oil recovery through water drive development in the middle and later stages of oil reservoirs.
万方数据
维普
