Research and Application of High Temperature Resistant Water Shutoff Profile Control Agents

摘要

After many rounds stimulation, high permeable zone of Liaohe oilfield heavy oil block has reached high recovery degree. Every steam injection didn't enter into the middle and low permeable formation, medium and low permeability layer recovery degree is still very low or unused, leading to low steam injection efficiency. It is necessary to adjust the steam absorption profile and improve the effect of steam injection to improve reservoir producing extent. In this paper, a series of high temperature resistant water shutoff profile control agents are developed in view of the heavy oil stimulation exploit using composite plugging technology to adjust steam absorption profile.