摘要
针对Fe^2+的存在会对聚合物溶液黏度造成较大损失的问题,考察了Fe^2+对聚合物黏度的影响情况。结果表明:1)当Fe^2+初始质量浓度大于20mg/L时,聚合物溶液会生成絮状胶体物质,造成滤膜孔隙堵塞。2)体系中还原性条件缺失时,聚合物黏度损失只取决于限量反应物(Fe^2+或O2)的初始质量浓度,当Fe^2+或O2其中一种物质反应完全时,聚合物黏度损失停止。3)当剪切速率为8.0s^-1,Fe^2+初始质量浓度小于0.32mg/L时,聚合物黏度损失不超过10%;当剪切速率为0.2s^-1,Fe2+初始质量浓度小于1.30mg/L时,聚合物黏度损失不超过25%。4)聚合物黏度损失会随聚合物初始质量浓度增加而减弱。
Since the content of Fe^2+causes a marvelous loss of polymer fluid viscosity,the potential influence of Fe^2+on polymer flooding was studied in this article.The results show that when the initial mass concentration of Fe^2+is greater than 20 mg/L,the solution system will produce flocculent colloids,leading to filter membrane porosity block;under short-redox condition,the loss of polymer viscosity depends on the preliminary mass concentration of limited reactant Fe^2+or O2,and polymer viscosity loss would stop when anyone of Fe^2+or O2 consumes completely;moreover,with shearing rate at about 8.0 s^-1 and initial Fe^2+mass concentration less than 0.32 mg/L,polymer viscosity loss never exceeds 10%;with shearing rate at about 0.2 s^-1 and initial Fe^2+mass concentration less than 1.30 mg/L,polymer viscosity loss never exceeds 25%.The viscosity loss of polymer would drop off as the polymer concentration increases.
作者
王刚
段举
胡学恒
武佳
李科
王金生
WANG Gang;DUAN Ju;HU Xueheng;WU Jia;LI Ke;WANG Jinsheng(Laojunmiao Oil Production Plant,Yumen Oilfield Company,PetroChina,Jiuquan 735019,China)
出处
《断块油气田》
CAS
CSCD
北大核心
2019年第3期371-374,共4页
Fault-Block Oil & Gas Field
关键词
提高采收率
三次采油
聚合物驱
黏度损失
enhanced oil recovery
tertiary oil recovery
polymer flooding
viscosity loss
