振动-空气泡沫驱封堵性能评价与矿场试验研究

发布时间：2018-06-05 20:10

本文选题：低频振动 + 空气泡沫驱　；参考：《西安石油大学学报(自然科学版)》2017年01期

【摘要】：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。
[Abstract]:In order to solve the problem of high water cut and low recovery in fractured low permeability reservoirs in Ordos Basin in the later stage of development, based on the synergistic mechanism of air foam flooding under low frequency vibration, a self-made wave field simulation experimental device is used. The effect of low frequency vibration on plugging performance and oil recovery of air foam flooding is discussed. The experimental results show that compared with static foam plugging, the dynamic foam plugging performance under vibration is obviously improved, and the effect is optimal when the vibration frequency is 10 Hz and the vibration acceleration is 0.04g(g as gravity acceleration), and with the increase of water flooding permeability, the dynamic foam sealing performance is improved obviously, and the dynamic foam sealing performance is improved when the vibration frequency is 10 Hz and the vibration acceleration is 0.04g(g. The plugging effect of vibration-air foam flooding on sand filling pipe is better, the recovery factor is increased by 19.63 percent on average, the permeability difference is increased from 3.08 to 37.08, and the oil recovery increase is increased from 18.52% to 38.69%. meanwhile The field test of vibration-air foam flooding in Yanchang Oilfield shows that the injection flow rate is reduced by 46.8%, the pump injection pressure is increased by 135.1%, the daily liquid production in oil wells is decreased by 9.5%, the daily oil production is increased by 12.2and the comprehensive water cut is reduced by 8.8%. The situation has improved markedly.
【作者单位】：中国石油大学(北京)石油工程学院;中国石油大学(华东)石油工程学院;陕西延长油田股份有限公司西区采油厂;
【基金】：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)
【分类号】：TE357.46

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