大庆石油地质与开发

2014, v.33;No.164(04) 126-130

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气液分异作用对泡沫运移封堵效果的影响
INFLUENCES OF GAS-LIQUID DIFFERENTIATION ON THE EFFECTS OF FOAM MIGRATION AND PLUGGING

喻贵民
YU Guimin

摘要(Abstract):

为考察气液重力分异作用对泡沫在储层内运移封堵效果的影响,采用二维均质可视化模型进行测试。结果表明:在气液重力分异作用下,泡沫在储层内呈现向上运移封堵趋势,气液体积比为0.5:1相比1:1和2:1在储层内的压力传播距离、波及面积和封堵强度较大;气液体积比1:1相比2:1和0.5:1的泡沫阻力因子下降幅度最小,重力分异作用体现最弱。气液重力分异作用对泡沫在储层内运移封堵效果存在较大影响,优化气液体积比可减缓气液重力分异作用,增强泡沫稳定性及封堵强度。
In order to inspect and investigate the influences of the gas-liquid gravity differentiation on the effects of the foam migration and plugging within a reservoir,2D homogeneous visualizing model is adopted for the above testing.The results show that under the gas-liquid gravity differentiation,the foam within the reservoir shows the trend of upward migration and plugging,compared with the gas-liquid volume ratio of 1:1 and 2:1,for one of 0.5:1,all the pressure propagation distance,swept area and sealed strength in the reservoir are much larger;compared with the gas-liquid volume ratio 2:1 and 0.5:1,for one of 1:1,the foam resistance factor decreases least,the gravity differentiation embodies weakliest.There is much more serious influences of the gas-liquid gravity differentiation on the effects of the foam migration and plugging in the reservoir,the optimized gas-liquid ratios can reduce and weaken the gas-liquid gravity differentiation,and moreover enhance the foam stability and sealed strength.

关键词(KeyWords): 气液分异;泡沫运移;气液体积比;封堵效果
gas-liquid differentiation;foam migration;gas-liquid volume ratio;plugged 'effect

Abstract:

Keywords:

基金项目(Foundation): 中海石油总公司重点科研项目“SZ36-1油田泡沫细分层注水技术优化与应用研究”(C/KJF YF 003-2012)

作者(Author): 喻贵民
YU Guimin

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