摘要
凝胶与聚表二元复合体系交替注入驱油技术是一项具有良好的使用价值及应用前景的提高采收率技术,为了探讨何种浓度的凝胶体系及表面活性剂的选材能够使该复合体系在油层中稳定性最强,驱油效果最好,开展了凝胶与表面活性剂室内优选实验.首先,通过测试不同浓度凝胶体系浓黏关系及稳定性,优选出了聚合物浓度为2000 mg/L的凝胶体系,其具有成胶时间短、稳定性强及凝胶强度大等特点.同时通过配伍性实验分别对比了三种不同配方的铬离子凝胶体系及复合离子凝胶体系的凝胶强度,结果显示,较之复合离子凝胶体系,铬离子凝胶体系成胶后黏度大,且后期稳定性更强.最后对RMA-1型表面活性剂以及烷基苯磺酸盐进行界面张力大小测定发现,RMA-1型表面活性剂与铬离子凝胶体系能形成超低界面张力,即RMA-1型表面活性剂更适合于铬离子凝胶体系.
Alternately injecting of gel and polymer/surfactant compound system flooding technology is an improvedrecovery technology,with good use value and application prospect.In order to explore which concentration of gelsystem and which kind of surface acting agent has the best stability and displacement characteristics in thereservoir,this paper carries out a study on laboratory selecting experiment of gel and surface acting agent.Firstly,according to the text of gel system’s viscosity-concentration relationship and stability,we select out the gel systemwith2000mg/L polymer concentration,which has short gelation time,best stability and gel strength.Then,throughthe compatibility experiment,we contraste three different formulations of chromium ion gel system and compoundion gel system’s gel strength.The results show that comparing with compound ion gel system,chromium ion gelsystem have higher viscosity and stronger later stability after the formation of gel.Finally,we measure the interfacialtension of RMA-1surfactant and ABS(alkylbenzene sulfonate),and find that the RMA-1surfactant can formultralow interfacial tension with chromium ion gel system.So the RMA-1surfactant is more suitable for thechromium ion gel system.
作者
张继红
刘畅
朱正俊
王亚楠
ZHANG Jihong;LIU Chang;ZHU Zhengjun;WANG Yanan(Key Laboratory for Enhancing Oil/Gas Recovery of Ministry of Education in Northeast Petroleum University,Daqing 163318,Heilongjiang China;China National Petroleum Corporation Tarim Oilfield Company,Korla 841000,Sinkiang China)
出处
《河南科学》
2017年第6期882-886,共5页
Henan Science
基金
国家自然科学基金(51274070)
关键词
凝胶
表面活性剂
浓黏关系
稳定性
驱油效果
gel
surfactant
viscosity-concentration relationship
stability
displacement effect
