【摘要】 在室内研制了一种可供较高温度、高矿化度油藏深部调剖用的HPAM/Cr3+弱凝胶调驱体系。考察了聚合物浓度、交联剂浓度、稳定剂浓度、温度、矿化度以及pH值对成胶性能的影响。确定了HPAM/Cr3+弱凝胶体系的最佳形成条件:HPAM聚合物1200mg/L;铬交联剂J(以Cr3+计)浓度40mg/L;稳定剂W浓度40mg/L;体系pH值6~8;最佳使用温度70℃。HPAM/Cr3+弱凝胶体系可实现成胶时间可控,凝胶强度可调。更多还原

【Abstract】 HPAM/Cr³⁺ weak gel and profile control system is developed in laboratory for high temperature and high salinity reservoir for the purpose of profile control.The effects of polymer concentration,crosslinker concentration,stabilizer concentration,temperature,salinity and pH value on gelation are investigated.The optimum preparation conditions are determined,where HPAM amount is 1200mg/L,crosslinker J amount is 40mg/L,stabilizer W amount is 40mg/L,pH value is 6⁸,temperature is 70℃.The gelation time is adjustable and gel intensity is controllable in HPAM/Cr³⁺ weak gel system.更多还原