三类油层三元复合驱提高采收率可行性研究  

EOR FEASIBILITY STUDY ON ASP FLOODING FOR CLASS Ⅲ OIL RESERVOIRS

作　　者：贾忠伟[1] 杨清彦[1] 侯战捷[1] 董大鹏[1] 袁敏[1] 

机构地区：[1]大庆油田有限责任公司勘探开发研究院,黑龙江大庆163712

出　　处：《大庆石油地质与开发》2013年第2期106-109,共4页Petroleum Geology & Oilfield Development in Daqing

基　　金：中国石油天然气股份有限公司科技重大专项(2008E-1216)

摘　　要：通过室内实验评价了三类油层三元复合驱注入能力、提高采收率幅度及化学剂吸附损失程度。结果表明:三类油层三元复合驱可比水驱提高采收率16.93%;在有效渗透率30×10^(-3)μm^2以上的油层三元复合体系能够实现正常注入,三类油层的碱敏性不会对油层产生严重的伤害;与一、二类油层相比,三类油层聚合物的吸附量相近,表面活性剂的吸附量增加约20%,三元复合驱时需要考虑表面活性剂吸附损失的影响。根据实验结果及驱油机理分析,认为三元复合驱应用于三类油层是可行的。By the laboratory experiments, the injectivity and EOR range of ASP flooding and moreover the adsorption loss of chemicals for Class m oil reservoirs are evaluated. The results show that the ASP EOR is more than 16.93% than that of water flooding. ASP system can be injected normally in those oil reservoirs of which effective permeability is more than 30×10-3μm , the alkali sensitivity cannot cause bad damage to the oil reservoirs. Comparing with Class I and II oil reservoirs, the adsorption amount of the polymer in Class m reservoirs is nearly the same, but the adsorption amount of the surfactant increases by about 20%, so the adsorption loss of the surfactant should be considered in ASP flooding. From the experimental results and oil displacing mechanism, it is feasible for ASP flooding in Class m oil reservoirs.

关 键 词：三类油层 三元复合驱 驱油效率 注入能力 吸附 可行性 

分 类 号：TE34[石油与天然气工程—油气田开发工程]