HPAM/AlCit胶态分散体系成胶性能评价及其对岩石润湿性的影响  

Gelling property evaluations of HPAM/AlCit colloidal dispersion system and its effect on rock wettability

作　　者：孙仁远[1] 彭文丰 成国祥[3] 张林 王磊[1] 

机构地区：[1]中国石油大学石油工程学院,山东东营257061 [2]中海油湛江分公司,广东湛江524057 [3]天津大学材料科学与工程学院,天津300072 [4]中国石油玉门油田分公司,甘肃玉门735200

出　　处：《材料科学与工艺》2007年第2期214-217,共4页Materials Science and Technology

基　　金：国家高技术研究发展计划资助项目(2004AA606061);国家自然科学基金资助项目(10302021)

摘　　要：以部分水解聚丙烯酰胺、柠檬酸铝为主要材料合成了可用于油藏深部调驱的新型胶态分散体系(HACDS),评价了HPAM浓度、放置时间、HPAM/AlCit质量比对HACDS成胶性能的影响,并利用自吸吸入法研究了HACDS对岩石润湿性的影响.研究表明:随HPAM浓度的增加,HACDS的成胶时间缩短;随放置时间的增加,HACDS的粘度增大;HPAM/AlCit质量比对HACDS成胶时间有一定的影响;HACDS的注入可使岩石的润湿性向亲水方向转化;HACDS的注入量对相对润湿指数有一定的影响.分析认为HACDS在岩心中形成吸附膜是导致岩心润湿性改变的主要原因.A new colloidal dispersion system （HPAM/Aluminium Citrate Colloidal Dispersion System, HACDS） made up of HPAM and Aluminium Citrate （AlCit） was prepared. The effect of HPAM concentration, the mass ratio of HPAM to AlCit and time on the gelling properties of HACDS was evaluated. The imbibition method was used to measure the wettability changes of rocks by injection of HACDS. Experiments show that the gelling time is getting shorter with the increase of HPAM concentration, the viscosity of HACDS increases with time going and the gelling time is related to the mass ratio of HPAM to AlCit. The injection of HACDS can change the wettability of cores. The wettability change is related to the injected volume of HACDS into the cores. The retention and adsorption of HACDS in the core are the main mechanisms for wettability change.

关 键 词：胶态分散体系 部分水解聚丙烯酰胺 成胶 吸附膜 相对润湿指数 

分 类 号：TE357.47[石油与天然气工程—油气田开发工程] TE39