摘要
以稠油井筒传热模型和实验得到的不同温度、含水率时的井筒混合液粘度关系式为基础,利用均流模型下的波特曼-卡蓬特方法建立了井筒压降模型。该模型主要适用于油-水两相且油水混合液粘度范围小于10000mPa·s的稠油油井。利用该模型对实例进行分析计算,结果表明:当井口温度为25℃时,越接近井口摩阻压降梯度越大,总压降梯度也越大;当井口温度为80℃时,整个井筒内的摩阻压降梯度和总压降梯度变化均不大,相当于稀油生产。利用该井筒压降模型计算出的值与实测结果误差较小,能够有效计算稠油井井筒压力分布。
Based on the heat transfer model of heavy oil wellbore and the wellbore mixed liquid viscosity relation at different temperatures and water cuts obtained by experiment, the wellbore pressure drop model was established by using the Portman - Carpenter method at the uniform flow model. The model is mainly applied in heavy oil wells with oil - water two - phase and the viscosity of oil - water mixture less than 10,000 mPa. s. The example results calculated by the model show that when the wellhead temperature is 25℃, the more close to the wellhead is, the greater the friction pressure gradi- ent is,as well as the total pressure gradient. When the wellhead temperature is 80℃,the change of friction pressure drop gradient in whole wellbore and total pressure drop gradient is not large, which is equivalent to the production of thin oil. Compared with the actual measured results, the error of wellbore pressure drop calculated by the model is small. Therefore, the model can be used to calculate the heavy oil wellbore pressure distribution effectively.
出处
《复杂油气藏》
2012年第2期71-75,共5页
Complex Hydrocarbon Reservoirs
关键词
稠油
井筒传热
粘度
压降模型
压降梯度
heavy oil
wellbore heat transfer
viscosity
pressure declined model
pressure gradient
作者简介
王伟（1985-），中国石油大学（北京）油气田开发工程专业在读硕士研究生。电话：15210124504，E—mail：messiww@126.com。
