【摘要】 油井动液面数据反映了地层供液与能量状况,常规人工定期测试方法存在录取不及时、连续性、实时性差等问题。通过确定电功图量化指标,基于油井举升上行功与扬程成正比原理建立电功图计算动液面数学模型,采用上行功增量计算法实现了计算模型的求解,消除了地面及井下设备等因素对计算结果的影响,形成了油井动液面的计算采集新方法。现场9口井的应用表明,电功图计算动液面算法平均相对误差5.82%,考虑套压修正后计算精度提高了3.4%,实现了油井动液面实时跟踪分析,为油藏压力连续监测提供了一种简单可行的方法。更多还原

【Abstract】 The dynamic fluid level data of oil wells reflect the liquid supply and energy status of formations.The conventional manual regular testing method has problems such as untimely recording, poor continuity and poor real-time performance. By determining the quantitative indicators of electric power diagrams, a mathematical fluid level calculation model based on incremental upstroke electric power is established and solved, the influence of surface and underground equipment on the calculation results is eliminated, and a new method for calculating and collecting fluid level of oil wells has been developed. The field application of 9 wells shows that the average error of the algorithm is 5.82%, and the calculation accuracy is increased by 3.4%after considering casing pressure correction. The real-time tracking analysis of oil well’s fluid surface is realized, which provides a simple and feasible method for the continuous monitoring of reservoir pressure.更多还原