关键词: 三元复合驱, 矿场试验, 采油速度, 注入能力, 采液能力, 乳化, 结垢

Abstract: Alkaline surfactant polymer (ASP) flooding is more complicated and sensitive to oil characteristics and reservoir features than other enhance oil recovery (EOR) methods.On the basis of laboratory test,five field tests of ASP flooding were conducted to study the response performances toASP injection,including pilot test and extended test sequence under the conditions of different reservoir characteristics,well patterns,well spaces and ASP compositions.ASP test results show that the injectability of reservoir decreased less,the fluid productivity decreased a little more,and water cut decreased much more.The incremental oil recovery increased by 20% with ASP flooding more than with polymer flooding.Field tests also show that ASP flooding has higher recovery rate than polymer flooding though some emulsion and scaling produced at low water cut.

Key words: alkaline surfactant polymer flooding, field test, recovery rate, injectability, productivity, emulsion, scaling