摘要
随着萨南油田进入特高含水期,油田开发对象逐渐转向薄差层。机采井受薄差层产液强度低、管网串联及高寒环境等影响,常规产量计量工作难度大,现今采用的示功图计量方法依托于常规产量计量校正,对于无分离器设计、分离器损坏、数字化离线,以及失准井则难以实现产量计量。为解决该难题,从井况原理出发,结合冲程系数、充满系数、漏失系数及体积系数等影响泵效的因素,构建萨南油田独立自主的示功图计产模型,实现利用低压、数字化数据进行产量计量功能。模型先后以泵径、油层管理单元为元素,进行可行性、准确性、适用性及通用性4轮测试,与分离器量油对比,测试产量计量准确率达到87.13%以上。作为数字化功能补充,该系统有效解决了产能无分离器井及数字化离线井产量计量问题,实现了油田产量计量系统完善和升级,为油田数智化建设提供新支撑。
As Sanan Oilfield enters the ultra-high water content period,the oilfield development targets gradually turn to thin layer.The production measurement of the mechanical recovery well is difficult due to the influence of thin pay zone,low production strength,series pipeline network and cold environment.The current production measurement method mainly relies on the correction of conventional production measurement,which is difficult to achieve without separator design,separator damage and inaccurate well.In order to solve this problem,combining the stroke coefficient,full coefficient,loss coefficient and volume coefficient that affect the pump efficiency,a self-reliant and independent production model for measuring production by indicator diagram has been developed in the Sanan Oilfield according to the principle of well condition,which could realize the function of production measurement by low pressure and digital data.The model was tested for feasibility,accuracy,applicability and universality for four times,with the pump diameter and oil layer management as the unit,and compared with the separator oil measurement,the test metering accuracy reached more than 87.13%.As a supplement to digitalization functions,the system effectively solved the production measurement problem of wells without separators and the digital offline well,and realized the improvement and upgrading of the oilfield production measurement system,providing new support for the digital construction in the oilfield.
作者
曹存东
Cao Cundong(No.2 Oil Production Plant of Daqing Oilfield Limited Company)
出处
《采油工程》
2025年第S1期93-98,共6页
Oil Production Engineering
关键词
冲程系数
漏失系数
充满系数
泵效
示功图
stroke coefficient
leakage coefficient
filling coefficient
pump efficiency
indicator diagram
