矩阵电导法测量蒸汽干度的电场模拟与误差  

Electric Field Simulation and Error on Matrix Conductance Method to Measure Steam Dryness

作　　者：曾雷 晏永飞[1] 侯泽坤 Zeng Lei;Yan Yongfei;Hou Zekun(School of Mechanical Engineering,Liaoning Petrochemical University,Fushun Liaoning 113001,China)

机构地区：[1]辽宁石油化工大学机械工程学院,辽宁抚顺113001

出　　处：《辽宁石油化工大学学报》2023年第3期52-59,共8页Journal of Liaoning Petrochemical University

基　　金：辽宁省教育厅科学技术研究项目(L2009006)。

摘　　要：目前稠油开采工程普遍使用热采方法,将高温高压湿饱和蒸汽由注汽管道注入油井,通过其携带的热量与低温稠油进行热交换,提高稠油的流动性和渗透性以实现开采。湿饱和蒸汽干度是影响热采效率的重要参数,没有公认的测量方法,当前常用的方法是人工测量法,但此方法的测量结果存在严重的滞后性。为达到实时监测干度的目的,使用新型测量方法——矩阵电导法,在10 MPa、310℃的条件下,建立了用于测量外径为76 mm、内径为54 mm注汽管道内湿饱和蒸汽干度的26×26丝网模型;介绍了矩阵电导法的测量原理,并建立了干度算法模型;在Ansys Electronics软件中进行了电场模拟,分析了层间电场,结果表明适宜的层间距为2 mm。为提高精度,使用线性插值法处理边缘,对实际测量误差进行了预测。结果表明,一次线性插值后整体误差小于2.50%;二次线性插值后整体误差小于1.10%。At present,the thermal recovery method is widely used in heavy oil recovery engineering,in which the high temperature and pressure wet saturated steam is injected into the oil well from the steam injection pipeline,and the heat carried by it is exchanged with low temperature heavy oil,so as to improve the fluidity and permeability of heavy oil and realize recovery.Wet saturated steam dryness is an important parameter affecting thermal recovery effino recognized measurement method existent method.There is no recognized measurement method.At present,the commonly used method is manual measurement,but the measurement results of this method have serious hysteresis.In order to achieve the purpose of real-time monitoring of dryness,a new measuring method,matrix conductance method,under the condition of 10 MPa and 310℃,a 26×26 wire mesh model was established to measure the dryness of wet saturated steam in a steam injection pipeline with an outer diameter of 76 mm and an inner diameter of 54 mm.The measurement principle of the matrix conductance method is introduced and the dryness algorithm model is established.The electric field simulation was carried out in Ansys Electronics software,the electric field between the layers was analyzed,and the results show that the suitable interlayer spacing is 2 mm.In order to improve the accuracy,the linear interpolation method is used to process the edge,and the actual measurement error is predicted;the overall error after primary linear interpolation is within 2.50%;after quadratic linear interpolation,the overall error is less than 1.10%.

关 键 词：矩阵电导法 蒸汽干度 电场仿真 线性插值 误差 

分 类 号：TE37[石油与天然气工程—油气田开发工程]