抽油机井动液面计算方法的研究与应用  

Research and Application of Dynamic Liquid Depth Calculation Method in Pumping Wells

作　　者：李瑞东[1] 周江涛 金钟辉 LI Ruidong;ZHOU Jiangtao;JIN Zhonghui(College of Mechanical Engineering,Xi’an Shiyou University,Xi’an 710065,China;Beijing Etrol Technologies Co.Ltd.,Beijing 100085,China)

机构地区：[1]西安石油大学机械工程学院,陕西西安710065 [2]北京安控科技股份有限公司,北京100085

出　　处：《化工技术与开发》2019年第4期48-52,共5页Technology & Development of Chemical Industry

基　　金：国家863计划项目"油气田监测高性能微传感器及数字化系统"(2010AA042204)的延续研究

摘　　要：抽油机井在抽油过程中的工况复杂多变,动液面数据是判断油井生产是否健康的关键参数。在实际应用中,传统的动液面测量方法误差大,连续测量设备成本偏高。为研究油井动液面的连续测量方法,本文在泵功图的基础上,分析抽油机悬点的运动规律,确定悬点加速度为零处的悬点载荷,建立动液面计算模型,并通过现场实测数据,对计算模型进行了验证及误差对比分析。研究结果表明,所用的动液面计算方法与实测动液面深度的相对误差最大为6.52%,最小为0.14%,平均相对误差为2.67%。与其他计算方法相比,所建立的计算模型的精度较高,有效降低了动液面连续测量成本,有利于油田自动化生产管理。The working conditions of pumping wells were complex and changeable in the process of pumping,Dynamic fluid level data was a key parameter to judge whether oil well production was normal or not.In practical application,the traditional method of measuring liquid level had a large error and the cost of continuous measurement equipment was high.In order to research the continuous measurement method of dynamic fluid level in oil wells,on the basis of the pump work diagram,according to the changing characteristics of the acceleration of the suspension point of the pumping unit,solving the suspended point load at zero acceleration of suspended point,the dynamic liquid level calculation model was established.The calculation model was verified and the error was compared and analyzed through the field measured data.The results showed that the relative error between the calculation method of the moving liquid level and the measured moving liquid level depth was 6.52%at the maximum,0.14%at the minimum,and the average relative error was 2.67%.Compared with other calculation methods,the established calculation model had higher accuracy,effectively reduces the cost of continuous measurement of liquid level,and was beneficial to automatic production management in oil fields.

关 键 词：泵功图 动液面 连续测量 计算方法 

分 类 号：TE933[石油与天然气工程—石油机械设备]