抽油机井口产液连续计量技术

Discussion on the Continuous Metering Method at the Head of Pumping Well

摘要: 多年来，抽油机井的井口连续计量都是一个行业难题，井口计量要求体积小、安装方便、无需气液分离、可在线计量油气水三相流体的气量、液量以及含水率，由于抽油机井的生产方式为连续脉动产液，因此，能够将井下泵每一冲的产液量都记录下来，将可以反映井下泵的实时工作状况(充满程度、漏失量等)，有利于开发动态、工程管理及现场管理人员详细分析抽油机井地层供液能力和井下泵及举升系统工况动态变化，及时做出调整方案。本文针对以上需求，在现有单井计量方式的研究评价基础上，建立了抽油机井多参数井口计量的创新方案，并进行了现场试验验证，获得了重大技术突破。

Abstract: For many years, continuous wellhead metering of pumping wells is an industry problem. Wellhead metering requires small volume, convenient installation, no gas-liquid separation, and online metering of gas volume, liquid volume and water content of oil gas water three-phase fluid. Because the production mode of pumping wells is continuous pulsating fluid production, it is possible to record the liquid production of each stroke of downhole pump, which will reflect the real-time working condition of downhole pump (filling degree, leakage, etc.), is conducive to the development performance, engineering management and on-site management personnel to analyze the formation liquid supply capacity of pumping well and the dynamic change of downhole pump and lifting system working condition, and make adjustment plan in time. Aiming at the above requirements, based on the research and evaluation of existing single well metering methods, this paper establishes an innovative scheme of multi parameter wellhead metering for pumping wells, and carries out field test verification, which has obtained a major technical breakthrough.