井楼油田稠油油藏氮气泡沫调剖室内实验

Laboratory study of nitrogen-foam agents profile control technology at heavy oil reservoir in Jinglou Oilfield

为了给蒸汽一氮气泡沫调剖技术在井楼油田稠油油藏现场的应用提供理论依据，利用室内物理实验模拟方法，对现场提供的泡沫剂进行了静态和动态评价，测量不同质量分数和气液比下的发泡剂和氮气的阻力因子，优化出适合现场使用的最佳起泡剂质量分数为0．4％～0．5％，最佳气液比1：1，筛选出适合伴蒸汽注入的泡沫体系。使用并联填砂管分别模拟渗透率级差5和10的非均质储层，开展了氮气泡沫连续注入和周期段塞注入实验，优选出最佳氮气泡沫段塞注入参数0．05PV。为正确进行工艺设计提供了指导性意见。

This paper provides theoretical basis for the heavy oil reservoir in Jinglou Oil field using of steam-Nitrogen foam agents. By means of laboratory experiments, static and dynamic evaluation of the foam agents got from oilfield were made. The foam agents parameters including surfactant concentration and nitrogen-liquid ratio were optimized. By measuring the consistency and resistance factor of foam agents with different quality score and different nitrogen-liquid ratio, the optical quality score of foam agents is 0.4%-0.5% and the optical nitrogen-liquid ratio is 1：1. Simulating the situation of heterogeneous reservoir in Core/Sand Pack Experiment when the max/min permeability ratio is 5 and 10, the comparison of steam continuous flooding and nitrogen-active agents plug steam flooding are made to optimize the reasonable operating parameters, the experimental results show that the optical injection parameter of nitrogen-active agents plug steam flooding is 0.05PV.