第38参第4期 2016年7月
石油钻采工艺
OIL DRILLING & PRODUCTION TECHNOLOGY
文章编号：1000-7393(2016)04-051405
DOI: 10.13639/j.odpt.2016.04.021
基于井口憨压分析的电泵井工况诊断
古小红韩国庆？竺彪”
Vol.38 No. 4 July 2016
1.中国石化中原油田光分公司天然气技术管理部；2.中国石油大学石油工程教育部重点实验宝；3.中海油服油田生产事业部引用格式：古小红，韩国庆，竺彪.基于井口憨压分析的电泵井工沈诊断[』］.石油钻采工艺，2016，38(4)：514-518
摘要：电泵并的电流卡片无法有效判断电系或管柱漏失、举升能力下降、乘效低等故障，针对此问题，提出了电泵井并口憨压（不停系关闭井口）诊断流程及方法。通过分析悠压前并筒中气液流动状态，结合电泵特性再线和油井流入动态再线，建立了理论悠压由线模型，并且确定了曲线特征参数的提取方法，通过与实测够压面线特征参数的对比来判断故障类型。现场应用表明该方法可以成为电乘井工况综合诊断分析的有效手段。
关键词：慰压分析；电泵井；工况诊断；特性曲线
中图分类号：TE355.5
文献标识码：A
Working condition diagnosis of ESPwellbasedonwellheadpressure-outanalysis
GU Xiaohong,HAN Guoqing,ZHU Biao
1. Prguang Branch of Zhongyun Oifield Compay, SINOPEC, Dazhou, Sicharan 635002, China; 2. MOE Key Labonatory of Petroleam Engineering, China University of Petroleam, Bejing 102249, China;
3. COSL Production Division, Tianjin 300450, China
Citation: GU Xiaohong, HAN Guoqing, ZHU Biao. Working condition diagnosis of ESP well based on wellhead pressure-out analysis [ J ] - Oil Drilling & Production Technology, 2016, 38(4): 514-518.
Abstract: Current card of electric submersible pump well fails to discriminate effectively the leakage of electric submersible pump(ESP) or pipe string, the decline of pump lifting capacity and low pump efficiency. In order to solve this problem, ESP diagnosis process and method based on wellhead pressure-out analysis (shut in the wellhead without stopping the pump) was put forward. Based on the ESP characteristic curve and IPR curve (inflow performance relationship), the theoretical pressure-out curve model was established by analyzing the flowing state of gas and liquid in the borehole before pressure out. Then, the way to extract curve characteristic parameters was determined. And finally, the failure type was discriminated by comparing the characteristic parameters of theoretical pressure-out curve with the measured values. Field application indicates that this method can be used as the effective way to diagnose the working conditions of ESP wells comprehensively
Key words: pressure-out analysis; electric submersible pump well; working condition diagnosis, characteristics curve
电潜泵在长期运行过程中既受到供液不足、气锁、气蚀等方面的影响，也会存在电机故障、管柱漏失等方面的间题，需要通过工况诊断判断故障并及时调参或修复。从潜油电泵的工作原理和机组构成
可以看出，潜油电泵、潜油电机、潜油电缆与地层和产出液性质密切联系，在一个系统中共同工作，电泵并产生故障的可能性也存在于多个环节11。电流卡片通过对电机电流不同特征的识别和反演对电潜泵
基金项目：国家“十二五"科技重大专项“高含疏气蕴超深水平并钻完井技术”（编号：2011ZX05017-002)。
第一作者：古小红(1964-)，从事油气田开发技术管理工作，高级工程师。通讯地址：(635002)四川省达州市中原油田告光分公司天然气
技术管理部。电话：0818-4776738。E-mail：guxiaohong321@126.com
通讯作者：韩国庆(1969-),从事沟气田开发教学与科研工作，教投。通讯地址：(102249)北京市昌平区中国石油大学石油工程学院。电话：
010-89734339。 E-mail; hanguoqing@163.com