CHEMICAL WATER PLUGGING IN HIGH TEMPERATURE AND HIGH SALT RESERVIOR

This article demonstrated study on lab and initial test on site about chemical water plugging in high temperature and high salt reservoir.This technique use a new gel type plugging agent, the main agent is modified CPAM, crosslinker is organic amine.Study on lab shows when the highest temperature is 140℃ and the highest salinity is 35×104mg/L, gel forming and curing time for plugging agent is 6~24h and can be adjusted in this scope, strength of plugging is above 20MPa, which basically meet with requirements of chemical water plugging in high temperature and high salt reservoir in Zhongyuan Oilfield.This technique has get good effect in test on site in initial time.