特低渗透油藏多层合采物理模拟研究  

Physical Simulation Study of Commingle Production for Ultra-low Permeability Multilayer Reservoir

作　　者：徐庆岩[1] 于靖之 王雪芹[3] 巫聪 蒋文文[5] 滕起[6] 

机构地区：[1]中国石油勘探开发研究院,北京100083 [2]中国石油天然气股份有限公司吐哈油田分公司丘东采油厂,鄯善838202 [3]中国石油天然气管道局第一工程分公司,河北廊坊065000 [4]中石油华北油田分公司勘探开发研究院,河北任丘062552 [5]中国专利信息中心,北京100088 [6]中国石油勘探开发研究院廊坊分院,廊坊065007

出　　处：《科技通报》2015年第9期49-53,共5页Bulletin of Science and Technology

基　　金：国家油气重大专项(2011ZX0513-006)

摘　　要：针对特低渗透多层油藏的层间非均质性特征,采用天然露头平板大模型并联驱替的方法进行模拟,从非线性渗流规律、产量规律和流场分布规律三个方面对多层合采的开发效果进行研究。结果表明:平板模型渗透率越低,在相同驱替压力梯度下无因次渗透率越小,非线性渗流特征越显著;平板模型并联驱替时,渗透率较低的模型流速较小,且流速的差异程度超过了渗透率的差异程度;随着平板模型渗透率和驱替压差的增大,模型整体注入波及和驱替效果逐渐变好。We adopted large-scale natural outcrop flat model in parallel to do physical simulations, in order to illustrate the heterogeneity characteristic of ultra-low permeability multilayer reservoir better. We analyzed the simulation results from three aspects, which were nonlinear seepage law, flow rate and flow field distribution regularity. The research shows that: under the same pressure gradient, the dimensionless permeability decreased with the permeability of large-scale model and the nonlinear seepage characteristics would be more remarkable when the permeability of model is much lower; when the three models were displaced in parallel, the one with lower permeability had smaller flow rate and the flow rate difference between each other was larger than permeability difference; with the increase of model permeability and driving pressure drop, the total sweeping and displacing result would get better.

关 键 词：特低渗透 多层油藏 天然露头 物理模拟 非线性渗流 

分 类 号：P618.130.2[天文地球—矿床学]