渤海J油田氮气复合泡沫调驱室内实验研究

An Indoor Experimental Study of Nitrogen Composite Foam Flooding in Bohai J Oilfield

为了能够给JZ25-1S油田氮气泡沫调驱现场施工应用提供理论依据,基于JZ25-1S油田油藏特征,采用Waring Blender法为其筛选出氮气泡沫调驱用起泡剂体系:质量浓度为0.5%,QP-18+800,mg/LHPAM。通过室内岩心流动阻力因子实验研究,优选了该体系的注入参数,实验结果表明,最佳气液比1∶3,最佳注入速度2,m L/min,通过室内实验研究,能够为现场施工提供指导性意见。

In order to provide a theoretical basis for the field application of nitrogen foam profile controlling and flooding in JZ25-1S oil field, the Waxing Blender method was used to screen out the nitrogen foam profile control with foaming agent system on the basis of characteristics of the oil reservoir. The system consists of the mass concentration 0.5% QP-18＋800 mg/L HPAM. On the basis of an indoor experimental study of core flow resistance factors, injection parameters of the system were chosen and experimental results showed that the optimum gas-liquid ratio was 1 ： 3 and the optimal injection speed Was 2 mL/min. The indoor experimental study can provide guidance for onsite construction.