泡沫驱油在胜利油田的应用

Application of foam flooding in Shengli oil field

该文介绍了泡沫及其基本性质，研究了与驱油作用有关的泡沫的性能及室内实验情况，如流动特性、粘度、稳定性、滤失性能等。阐述了泡沫驱油提高采收率的机理，它具有提高波及系数和驱油效率的双重作用。详细论述了泡沫驱油在胜利油田的现场应用及其良好的效果：其中胜坨３－５－２３井组有效期为３年，增油５×１０４ｔ以上，在施工阶段的４个月，投入产出比即达１∶１０；草２０－１Ｏ－１８井组，８个月时间增油６０００ｔ以上，含水率下降５％～８％；草２０－１９－１３井组，６个月时间增油５０００ｔ，含水率下降１０％。泡沫驱油是一种很有前景的提高采收率的方法。

This paper presents foam and its basic properties. The properties associated with oil displacement and laboratory experiments, such as flow properties, viscosity, stability, and filtration are discussed. The mechanisms of enhanced oil recovery by foam flooding are described. Foam can not only improve sweep efficiency but also enhance oil displacement efficiency. The field application of foam flooding and the good results in Shengli oil field are discussed in detail. In the well group of Shengtuo 3-5-23, the validity period was three years,the oil increment was up to 50000 tons. and the ratio of input to output reached 1:10 in the four months of implementation stage. In the well group of Cao 20-10-18, the oil increment was more than 6000 tons in 8 months, and the water cut decreased by 5%￣8%. In the well group of Cao 20-19-13, the oil increment was 5000 tons in 6 months, and the water cut decreased by 10%. Foam flooding is a promising technique for enhanced oil recovery.