海上油井的气举-电泵组合举升耦合模型研究  

Coupling Model of GL-ESP Combined Lift for Offshore Oil Well

作　　者：孙殿新 檀朝东[2] 阚唱轩 郑春峰[3] 程心平[3] 

机构地区：[1]天津中车机辆装备有限公司 [2]中国石油大学(北京)石油工程学院 [3]中海油能源发展股份有限公司工程技术公司

出　　处：《石油机械》2017年第9期63-68,共6页China Petroleum Machinery

基　　金：中国海洋石油总公司科技发展项目"电泵与气举智能耦合举升工艺技术研究"(KJ 135-2016-02)

摘　　要：为了充分利用海上平台的气源进行海上深井的开发,引入了气举与电潜泵组合举升系统(GL-ESP系统)。以油藏流入动态和多相流动模型为基础,建立油藏、井筒、GL-ESP系统耦合数学模型,并针对GL-ESP组合举升管柱结构,以压力节点分析为基础,提出潜油电泵工作参数和气举工作参数协调工作的一体化设计方法。利用该设计方法进行实例模拟分析,计算并比较了GL-ESP组合举升与单气举、单电泵举升时的注气量、电泵级数、电泵功率及电泵下深等参数。计算结果表明:GL-ESP组合举升可以大幅度减少电泵级数、降低电泵功率并增加油井产量。GLESP系统通过改善电泵工作状况进而充分发挥设备举升能力,可以充分挖掘油井潜能,对于海上深井的开发具有重要意义。In order to make full use of the gas source of the offshore platform for the development of offshore deep wells, a gas lift and electric submersible pump combination lifting system （GL-ESP system） was introduced. Based on the reservoir inflow performance and multiphase flow model, the coupled mathematical model of reservoir, wellbore and GL-ESP system has been established. For the GL-ESP combined lifting string, based on the pressure node analysis, the integrated design method that coordinates the ESP working parameters and gas lift working pa-rameters has been proposed. The design method was then used to conduct simulation and analysis. Calculations and comparisons have been conducted on the parameters of GL-ESP combined lift, the gas lift and the ESP lift, inclu-ding the gas injection volume, the pump stages, the pump power and the pump depth. The results show that the GL-ESP can greatly reduce the pump stages and power while increase the oil production. The GL-ESP system could make full use of the lifting capacity by improving the ESP working condition and consequently exploit the well po-tential ,which is of great significance for the development of offshore deep wells.

关 键 词：海上油井 气举-电泵组合举升 参数分析 耦合模型 

分 类 号：TE355.5[石油与天然气工程—油气田开发工程]