焦耳-汤姆逊系数计算方法研究  

A method study for calculating Joule-Thompson coefficient

作　　者：毛伟[1] 张立德[2] 

机构地区：[1]大庆油田有限责任公司勘探开发研究院,黑龙江大庆163712 [2]吉林油田分公司乾安采油厂,吉林长春131400

出　　处：《特种油气藏》2002年第5期44-46,共3页Special Oil & Gas Reservoirs

摘　　要：对气井井筒温度预测时所必需的焦耳 汤姆逊系数的计算方法进行进一步研究 ,推出了焦耳 汤姆逊系数计算公式 ,指出了计算焦耳 汤姆逊系数的关键在于定压下压缩因子对温度的偏导数。以立方型状态方程通式为基础 ,该通式中的系数取不同值可变为VDW、RK、SRK、PR方程 ,推出了定压下压缩因子对温度的偏导数。最后预测了不同压力、温度下甲烷的焦耳 汤姆逊系数 ,通过和实测值的对比 ,分析了产生误差的原因 ,给出了计算焦耳 汤姆逊系数时选择状态方程的依据。The method for calculating Joule.Thompson coefficient has been studied while predicting wellbore temperature distribution in a gas well.The equation of calculating Joule-Thompson coefficient is derived.The key to caleulating Joule.Thompson is the temperature partial derivative of compressibility factor at constant pressure·On the basis of the unified cubic equation of state,the temperature partial derivative of compressibility factor at constant pressure is obtained.The unified cubic equation of state can change into VDW,RK,SRK and PR equation when parameters get different values. Joule-Thompson coefficient of methane has been predicted at different pressure and temperature· Through comparison with measured values,the reason of producing errors is analyzed.The basis for choosing equation of state is proposed while calculating Joule-Thompson coefficient.

关 键 词：焦耳-汤姆逊系数 计算方法 研究 气井 井筒 温度预测 甲烷 温度 状态方程 压缩因子 

分 类 号：TE37[石油与天然气工程—油气田开发工程]