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抽油井计算机诊断技术是以波动方程为基础,分析抽油井问题的数学方法。首先根据测得的光杆载荷及位移,计算出每级抽油杆柱顶部及抽油泵柱塞上的载荷和位移,并绘出相应的井下示功图,然后,根据地面及井下示功图分析抽油系统的工况。全部计算和分析工作都由计算机完成。本文介绍了诊断技术的基本原理及其应用,并提出了根据液体粘度、抽油杆和油管直径以及抽汲参数计算粘滞阻尼系数的新方法。
The computer diagnostic technique of pumping wells is a mathematical method to analyze pumping wells based on the wave equation. First of all, according to the measured light rod load and displacement, calculate the load and displacement of the top of each level sucker rod and pump plunger, and draw the corresponding downhole dynamometer, and then, based on the ground and underground dynamometer analysis Pumping system conditions. All calculations and analysis are done by computer. This paper introduces the basic principle of diagnostic technology and its application, and proposes a new method to calculate viscous damping coefficient based on liquid viscosity, sucker rod and tubing diameter and pumping parameters.