孤岛油田西区复合驱界面张力研究  

Research of interfacial tension for combination flooding in western area of Gudao oil field.

作　　者：曹绪龙[1] 王得顺[1] 李秀兰[1] 

机构地区：[1]胜利油田有限公司地质科学研究院

出　　处：《油气地质与采收率》2001年第1期64-66,共3页Petroleum Geology and Recovery Efficiency

摘　　要：针对胜利油区孤岛油田西区油藏条件开展了单一碱、单一活性剂 +碱体系、复配活性剂 +碱体系及碱 +活性剂 +聚合物体系的界面张力实验。探索了碱浓度、活性剂浓度、复配活性剂及聚合物的加入等对动态界面张力的影响规律 ;考察了驱油体系经岩石吸附和热老化以后的界面张力特征 ;研究了界面张力等值图。研究表明 ,该区复合驱油体系即使活性剂有效浓度在 15 0mg/L条件下亦可达到 3× 10 -3 mN/m的低界面张力 ;聚合物的加入对体系的界面张力影响不大 ;体系经油砂吸附和热老化后仍能保持较低的界面张力。Interfacial tension experiment is carried out in single alkali, single surfactant+alkali system, combined surfactant+alkali system and alkali+surfactant+polymer system according to the reservoir condition in western area of Gudao oil field in Shengli petroliferous province. The influence rule of alkali concentration, surfactant concentration, combined surfactant and added polymer to dynamic state of interfacial tension is probed. The property of interfacial tension in oil displacement system through rock absorption and thermal ageing is investigated. Chorogram of interfacial tension is studied. Low interfacial tension may reach 3×10 ?3 mN/m in combination flooding system in the western area of Gudao even if effective concentration of surfactant is 150mg/L. The added polymer makes a little influence to the interfacial tension. Low interfacial tension may be kept after oil sand adsorption and thermal ageing in the system.

关 键 词：胜利油区 孤岛油田 复合驱动 界面张力 活性剂 

分 类 号：TE357.46[石油与天然气工程—油气田开发工程]