煤层气射流泵井排采后期降低能耗的探索  

Exploration of Reducing Energy Consumption in Later Stage of Jet Pump Drainage for Coalbed Methane Wells

作　　者：冯树仁 范红明 毛生发 李志彬 覃蒙扶 FENG Shuren;FAN Hongming;MAO Shengfa;LI Zhibin;QIN Mengfu(Shanxi Coalbed Methane Exploration and Development Branch,PetroChina Huabei Oilfield Company,Shanxi 046000)

机构地区：[1]中国石油天然气股份有限公司山西煤层气勘探开发分公司,山西046000

出　　处：《中国煤层气》2024年第5期18-22,共5页China Coalbed Methane

摘　　要：射流泵举升工艺是煤层气水平井重要的排采举升工艺,但排采后期高能耗问题成为制约该工艺推广的关键。本文通过对沁水盆地南部马必东区块射流泵工艺应用现状进行分析,主要针对排采后期低产液阶段因井下管柱或工具长期运行导致密封不严、进泵通道堵塞造成频率上升、地层出液量小导致供需不平衡等问题造成的高能耗现状展开研究。研究表明,通过提高泵效与改变运行模式可明显降低能耗,其中优化井下密封组件及泵筒结构可有效提高泵效,低产液阶段“一拖多”运行模式可有效降低排采机组的用电量。The jet pump lifting process is an important drainage and lifting technology for horizontal coal-bed methane wells.However,the high energy consumption in the later stage of drainage has become a key factor restricting the promotion of this technology.This paper analyzes the application status of the jet pump technology in the Mabidong Block in the southern Qinshui Basin.It mainly focuses on the high en-ergy consumption situation in the low liquid production stage in the later stage of drainage,which is caused by problems such as poor sealing of downhole tubing strings or tools due to long-term operation,blockage of the pump inlet channel leading to increased frequency,and small liquid output from the for-mation resulting in an imbalance between supply and demand.The research shows that energy consump-tion can be significantly reduced by improving pump efficiency and changing the operation mode.Specif-ically,optimizing the underground sealing components and pump barrel structure can effectively enhance pump efficiency.The"one-driving-multiple"operation mode in the low liquid production stage can effec-tively reduce the electricity consumption of the drainage unit.

关 键 词：射流泵 提高泵效 水平井 煤层气 沁水盆地 

分 类 号：F42[经济管理—产业经济]