聚合物表面活性剂在超长填砂管中的动态性能评价

发布时间：2018-04-09 09:52

本文选题：聚合物表面活性剂　切入点：m填砂模型　出处：《油田化学》2017年02期

【摘要】：为了研究功能型聚合物表面活性剂(BI型)在多孔介质长距离运移过程中的性能变化规律,采用自行设计建立的一套30 m长物理填砂模型进行了聚合物表面活性剂室内物理模拟驱油实验,研究了聚合物表面活性剂在长距离运移条件下的流度控制能力和压力、黏度、浓度及乳化效果的动态变化规律。研究结果表明,BI型聚合物表面活性剂可显著改善流度,提高渗流阻力,采出程度在水驱43.12%的基础上提高20.85%,总采出程度达63.97%。聚合物表面活性剂体系在模型中的有效作用距离约为注采端距离的2/3,20 m之后体系黏度和组分浓度降低到较低水平,压力较水驱阶段无明显提升。聚合物表面活性剂溶液具备较强的乳化原油能力,在模型中可形成乳化带,并随着注入向深部推进;形成的乳状液在约20 m处破乳,在模型后1/3距离不能再乳化。
[Abstract]:In order to study the function of polymer surfactant (BI) performance changes in the porous medium long distance migration process, designed by the establishment of a set of 30 m long physical sand filling model of polymer surfactant flooding indoor physical simulation experiment of polymer surfactant and mobility control ability the pressure in the long distance migration under the condition of dynamic variation of viscosity, concentration and emulsifying effect. The results showed that BI polymer surfactant can significantly improve the mobility, improve the flow resistance, recovery degree based on water flooding 43.12% increased by 20.85%, the total effective recovery degree of surface active agent of polymer 63.97%. in the model system of the distance is about after the injection end distance of 2/3,20 m viscosity and component concentration reduced to a lower level, the lower pressure water flooding stage had no obvious improvement. The polymer surface. The agent solution has strong ability of emulsifying crude oil, the emulsion belt can be formed in the model, and the emulsion will be demulsified at about 20 m at the depth of injection, and it can not be emulsified at 1/3 distance after the model.

【作者单位】：中国石油大学(北京)提高采收率研究院;中国石油三次采油重点实验室低渗油田提高采收率应用基础理论研究室;石油工程教育部重点实验室;
【基金】：国家示范工程“大庆长垣特高含水油田提高采收率示范工程”(项目编号2011ZX05052) 国家自然科学基金“ASP复合驱油藏油水界面张力变化规律及残余油启动机制研究”(项目编号51174216)
【分类号】：TE357.46

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