振动-空气泡沫驱封堵性能评价与矿场试验研究Plugging Performance Evaluation and Field Test of Vibration-Air Foam Flooding
李星红,徐加祥,刘玺,郑黎明,蒲春生
摘要(Abstract)：
为了解决鄂尔多斯盆地裂缝性低渗透油藏开发后期含水上升快、采收率低的问题,基于低频振动作用下空气泡沫驱的增效机理,利用自制波场模拟实验装置,探讨了低频振动对空气泡沫驱封堵性能以及提高采收率的影响。实验结果表明,相对于静态泡沫封堵,振动作用下的动态泡沫封堵性能有明显提升,且在振动频率为10 Hz、振动加速度为0.04g(g为重力加速度)时效果最优;随着水驱渗透率的增大,振动-空气泡沫驱对填砂管的封堵效果变好,采收率平均提高19.63%,渗透率级差由3.08增加到37.08时,采收率增幅由18.52%增加到38.69%。同时,在延长油田进行的振动-空气泡沫驱矿场试验显示调驱后注入流量降低约46.8%,泵注压力提高约135.1%,油井日产液相对降低9.5%,日产油相对增加12.2%,综合含水率降低了8.8%,生产状况有明显改善。
关键词(KeyWords)： 低频振动;空气泡沫驱;提高采收率;矿场试验
基金项目(Foundation): 中央高校基本科研业务费专项资金资助项目“低频谐振波对低渗油藏渗流影响的数值模拟研究”(编号:16CX02020A);; 国家自然科学基金项目“低渗油藏低频振动辅助表面活性剂复合驱油机理研究”(编号:51274229)
作者(Author): 李星红,徐加祥,刘玺,郑黎明,蒲春生
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