基于耦合分析的气井井筒温度压力剖面计算方法  

Calculation Method for Wellbore Temperature and Pressure Profile of Gas Well Based on Coupling Analysis

作　　者：李亚辉 王乐 张丹丹 LI Ya-hui;WANG Le;ZHANG Dan-dan(School of Chemistry and Chemical Engineering,Yulin University,Yulin 719000,China;Engineering Technology Research Institute,Southwest Oil and Gas field Company of CNPC,Chengdu 610000,China)

机构地区：[1]榆林学院化学与化工学院,陕西榆林719000 [2]中国石油西南油气田公司工程技术研究院,四川成都610000

出　　处：《榆林学院学报》2022年第6期5-11,17,共8页Journal of Yulin University

基　　金：榆林学院博士科研启动基金项目(18GK23)。

摘　　要：在气井的设计、动态分析及管理过程中,井筒温度和压力是两个非常重要的参数,但目前多数计算井筒温度及压力分布的方法都存在一定的适用范围或缺点。为了提高井筒温度剖面预测精度,以井筒中的传热为稳态传热,地层的传热为非稳态的假设为基础,考虑焦耳汤姆逊效应、摩擦生热、重力及动能项的影响,根据能量守恒定律建立基于温度、压力耦合的温度剖面计算模型,并给出了耦合模型迭代求解方法。采用相关文献中的数据进行验证,结果显示模型计算结果与实际情况比较吻合,能满足实际工程需要,表明本文所建立的耦合模型能有效地指导气井的设计与动态分析。In the process of design,dynamic analysis and management of gas well,especially in wellbore thermal analysis,the wellbore temperature and pressure are two key parameters.There are some methods to predict the temperature profile,but most of them have some disadvantages or application scopes.The article assumes that the heat transfer in wellbore is steady and the heat from wellbore to the surrounding is non-steady-state transfer process.Taking Joule-Thomson effect,friction and the influence of gravity and kinetic energy into consideration,according to the law of conservation of energy,a new model based on coupling analysis of temperature and pressure to calculate the wellbore temperature profile in gas wellbore is established.Using the relevant data to test the model by iterative method,it shows that the coupling model is consistent with the actual situation and can meet the needs of engineering design.It means that the coupling model can effectively guide the design and dynamic analysis of gas wells.

关 键 词：气井 温度剖面 焦耳汤姆逊效应 摩擦生热 耦合分析 

分 类 号：TD353[矿业工程—矿井建设]