CAJ | 학술논문

通过反相微乳液聚合,得到一系列交联聚合物微球,利用岩心驱替等方法对孤岛污水配制的交联聚合物微球体系的封堵能力进行了研究,考察了岩心渗透率和聚合物浓度对封堵性能的影响,并利用不同浓度聚合物进行了岩心驱油实验.实验结果表明:所合成的交联聚合物微球能够溶于油田污水,不会出现絮凝现象;该交联聚合物微球可以进入岩心内部吸附、滞留、聚集并形成封堵;岩心驱油效果显示污水配置的交联聚合物溶液能够较好地提高采收率,可将模拟油的采收率提高14%～15%,不同浓度溶液对采收率大小没有影响,但浓度大时驱油速度会提高.
통과반상미유액취합,득도일계렬교련취합물미구,이용암심구체등방법대고도오수배제적교련취합물미구체계적봉도능력진행료연구,고찰료암심삼투솔화취합물농도대봉도성능적영향,병이용불동농도취합물진행료암심구유실험.실험결과표명:소합성적교련취합물미구능구용우유전오수,불회출현서응현상;해교련취합물미구가이진입암심내부흡부、체류、취집병형성봉도;암심구유효과현시오수배치적교련취합물용액능구교호지제고채수솔,가장모의유적채수솔제고14%～15%,불동농도용액대채수솔대소몰유영향,단농도대시구유속도회제고.
Water-soluble crosslinked polymer microspheres are prepared by inverse micro-emulsion polymerization, the plugging performance of the system prepared with waste water from Gudao crude oil is evaluated by plugging agent; the effect of various con-centration and core permeability is studied. Oil-displacement experiments are proceeded with various concentration. The experimental results show that the crosslinked polymcrs microsphcre can dissolve in oilfield wastewater without coagulation. Experiment of plugging performance shows that the crosslinked polymers microsphere can go into the inner of rock-core and easy to be adsorbed, retained, aggregated and bridging plugged in the throats of the core media. Tests of oil-displacement in man-made rock-core show that the cross-linked polymers microsphere dissolved in oil-field wastewater has good effect on EOR and can enhance the recovery rate of emulating oil by 14%～15%, high concentration can only enhance the oil-displacement velocity.