摘要
本文针对大庆油田聚合物驱造成地层堵塞的问题,采用室内实验方法,研究各种无机离子对聚合物絮凝沉淀的影响,结果表明,铁离子与聚合物溶液产生絮凝物的临界浓度为0.007%,Fe^(2+)与聚合物溶液产生絮凝物的临界浓度为0.009%,其他离子对聚合物絮凝影响不明显,需要控制相应的离子浓度,以减轻地层堵塞。
In this paper, aiming at the blockage problem caused by polymer flooding in Daqing oilfield, the method of laboratory experiment are used to study the effect of inorganic ions on polymer flocculation and sedimentation. The results show that the critical concentration of iron ions which make polymer solutions produce flocculation is 0.007%, the critical concentration of ferrous ions which make the polymer solution produce the flocculation is 0.009%, and the effect of other ions on the polymer flocculation is not obvious. The concentration of corresponding ion needs to be controlled in order to alleviate formation blockage.
作者
曹广胜
张先强
李春成
CAO Guang-sheng ZHANG Xian-qiang LI Chun-cheng(Northeast Petroleum University, Daqing 163318, China)
出处
《化学工程师》
CAS
2017年第4期34-35,70,共3页
Chemical Engineer
基金
黑龙江省自然科学基金重点项目"活性原油在非均质储层中的自适应控水增油机理"(51574089)
关键词
聚合物驱
堵塞
无机离子
絮凝
临界浓度
polymer flooding
blockage
inorganic ions
flocculation
critical concentration
