渤海绥中36-1 油田二元复合驱相对渗透率研究

The Relative Permeability of Suizhong 36-1 Oilfield in Bohai Sea during Polymer/Surfactant Combination Flooding

蒋文超 张健 宋考平 唐恩高 黄斌 李强

JIANGWenchao ZHANG Jian SONG Kaoping TANG Engao HUANG Bin LI Qiang

为准确测定渤海绥中36-1 油田进行聚合物/表面活性剂二元复合驱相对渗透率曲线，提出了将某含水饱和度下聚合物/表面活性剂二元复合驱体系在岩心入口端与出口端黏度的平均值作为在岩心中平均黏度的黏度处理新方法；模拟该油田的实际情况采用恒速非稳态法测定了水驱和二元复合驱的相对渗透率曲线，研究了表面 活性剂和聚合物加量对二元复合驱相对渗透率曲线的影响。结果表明：二元复合驱的油相相对渗透率比水驱时的高，水相相对渗透率和残余油饱和度比水驱时的低；随着二元复合体系中表面活性剂加量的增大，油水两相的相对渗透率均增大，残余油饱和度降低；随着聚合物浓度的增大，油相相对渗透率增加，水相相对渗透率和残余油饱和度降低。图4表1 参12

In order to get the accurate polymer/surfactant combination flooding relative permeability curves of Bohai Suizhong 36-1 oilfield，a new viscosity treatment method，taking the average value of combination system viscosity in the core entrance and that in the core exit as the average viscosity in whole core under some water saturation，was suggested. On the experimental condition of Suizhong 36-1 oilfield，the relative permeability curves of water flooding and polymer/surfactant combination flooding were measured through the constant speed unsteady method. And the effects of surfactant and polymer concentration on the relative permeability curves of polymer/surfactant flooding were studied. The results showed that the relative permeability of oil phase in combination flooding was higher than that in water flooding，while the relative permeability of water phase in combination flooding was lower than that in water flooding，and the residual oil saturation of combination flooding was lower than that of water flooding. The higher mass fraction of surfactant，the higher relative permeability of water and oil phase was，and the lower residual oil saturation was. While the higher concentration of polymer，the higher relative permeability of oil phase was，and the lower relative permeability of water phase and residual oil saturation was.

10.19346/j.cnki.1000-4092.2016.06.025