稠油油藏体相流体非线性渗流理论模型
A theoretical model for nonlinear flow of bulk phase fluids in heavy oil reservoirs
柯文丽 1喻高明 1刘延东 2贾婷婷2
作者信息
- 1. 长江大学石油工程学院,湖北武汉 430100;油气钻采工程湖北省重点实验室(长江大学),湖北武汉 430100
- 2. 长庆油田分公司第二采气厂,陕西榆林 719000
- 折叠
摘要
根据稠油油藏体相流体渗流特点,建立基于稠油吸附边界层和屈服特性影响下的稠油体相流体非线性渗流理论模型及启动压力梯度理论公式,并利用岩心渗流与启动压力梯度试验结果对理论模型计算结果进行验证.结果表明:理论计算结果与试验结果拟合较好,启动压力梯度理论公式计算结果平均偏差为 7.77%,稠油油藏体相流体非线性渗流理论模型计算结果平均偏差为 7.50%,均在可接受偏差范围内,并且该模型针对不同流变类型的流体渗流都具有较好的普适性.
Abstract
In this study,based on the fluid flow characteristics of heavy oil reservoirs,a nonlinear flow model of fluid flow in heavy oil reservoirs was established considering the influence of heavy oil adsorption boundary layers and yield characteristics,along with a theoretical formula for the initiation pressure gradient.The calculation results of the theoretical model were valida-ted using core flow and initiation pressure gradient experimental results.The results show that the theoretical calculations are in good agreement with experimental results.The average deviation of the theoretical formula for the initiation pressure gradient is 7.77%,and the average deviation of the nonlinear flow model is 7.50%,both within an acceptable range of deviation.Moreo-ver,the new model exhibits good universality for predicting the flow behavior of fluids with different rheological types.
关键词
稠油/边界层/体相流体/非线性渗流/启动压力梯度Key words
heavy oil/boundary layer/bulk phase fluid/nonlinear seepage/threshold pressure gradient引用本文复制引用
基金项目
"十三五"国家重大科技专项(2016ZX05025001)
出版年
2024
国家科技期刊平台
NSTL
万方数据