基于多场耦合的蒸汽驱生产井流体温度值测量研究

Study on fluid temperature measurement of steam drive production wells based on multi-field coupling

在蒸汽驱生产井的流体温度测量中,使用传统的温度值测量方法存在着精度低的问题,为了解决此类问题,在传统测量方法的基础上引入多场耦合的概念,对蒸汽驱生产井流体温度值的测量方法进行优化。首先建立蒸汽驱生产井温度分布的数学模型,由该模型可以直接依据井口温度、产量等数据计算出生产井内的流体分布,在此基础上设计安装在生产井内的耦合温度测量传感器结构,借此对生产井中的初始数据进行采集,通过对生产井内部热阻的分析,得出多场耦合下的流体传递唯象方程表达式,进而得出综合传热系数,并输出最终的温度值测量结果。经过与传统方法的对比实验,发现多场耦合流体温度测量方法的平均误差值比传统方法低87.84,且测量结果可以精确到小数点后两位,因此可以得出结论:设计出的多场耦合蒸汽驱生产井流体温度测量方法的精度更高。

In the measurement of fluid temperature in steam drive production wells,there is a problem of low accuracy in traditional temperature measurement methods.In order to solve this problem,the concept of multi-field coupling is introduced on the basis of traditional measurement methods to optimize the measurement method of fluid temperature in steam drive production wells.Firstly,a mathematical model of temperature distribution in steam drive production wells is established.The fluid distribution in production wells can be calculated directly from wellhead temperature and production data.Based on this model,a coupled temperature measurement sensor structure installed in production wells is designed.By collecting the initial data in production wells,and by analyzing the thermal resistance in production wells,multi-field coupling is obtained.The combined phenomenological equation of fluid transfer is formulated,and then the comprehensive heat transfer coefficient is obtained,and the final temperature measurement results are output.Compared with the traditional method,it is found that the average error of multi-field coupled fluid temperature measurement method is 87.84 lower than the traditional method,and the measurement results can be accurate to the last two decimal points.Therefore,it can be concluded that the designed multifield coupled steam drive production well fluid temperature measurement method has higher accuracy.