中浅层煤层气井游梁式抽油机间抽控制技术研究及应用  

Research and application of intermittent pumping control technology for beam pumping unit in middle-shallow coalbed gas wells

作　　者：王波 邓永洪 詹先波 姚伟龙 邸冲 李波[2] WANG Bo;DENG Yonghong;ZHAN Xianbo;YAO Weilong;DI Chong;LI Bo(Hancheng Branch,PetroChina Coalbed Methane Company Limited,Hancheng 715400,China;School of Mechanical and Electrical Engineering,Southwest Petroleum University,Chengdu 610500,China)

机构地区：[1]中石油煤层气有限责任公司韩城分公司,陕西韩城715400 [2]西南石油大学机电工程学院,四川成都610500

出　　处：《石油工程建设》2024年第6期51-55,92,共6页Petroleum Engineering Construction

基　　金：中国石油煤层气公司科技项目(2022-KJ-36)资助;四川省自然科学基金项目“基于非线性动力学的超深井全井钻柱振动机理与抑振研究”(2022NSFSC1143)资助;四川省南充市市校合作项目“耦合非线性万米超深井全井简钻柱系统振动引致失效机理及可控性研究”(23XNSYSX0040)资助;四川省南充市市校合作项目“斯特林制冷机精确无振控制策略研究”(23XNSYSX0123)资助

摘　　要：为解决韩城采气管理区的中浅层煤层气井生产气量不足、连续抽取效率低下,以及能源消耗过高的问题,采取变速控制策略,调整抽油机的抽采频率,从连续抽取转变为间歇抽取,以实现供需平衡。间抽技术方案通过选取合适的时机进行抽采和改变抽采冲次,实现能量的有效利用。结果表明,施加智能间抽策略后,开井的时耗电量降低45.14%,节约了电能和成本;实施间抽策略前冲次的改变对时产气量影响很大,在1.6、2.6、3.6次/min冲次条件下的时产气量分别为16.14、15.24、0.14 m^(3)/h,冲次为3.6次/min的时产气量较低;实施间抽策略后,3种冲次下的平均时产气量可提高至15.30 m^(3)/h。针对韩城采气管理区的采气现状,建议在冲次为2.6次/min的条件下实施智能间抽策略,运行30 min停30 min。制定的间抽控制技术可以在降低抽油机能耗的同时保持系统的稳定运行,并提高煤层气的开采效率。To address the challenges of insufficient gas production,low efficiency of continuous pumping,and high energy consumption,a variable speed control strategy was adopted to adjust the pumping frequency of the pumping unit.This shift from continuous pumping to intermittent pumping aims to achieve a balance between supply and demand.The energy was effectively utilized by the intermittent pumping technology through timely oil pumping and pumping stroke frequency adjustment.The results indicate that after implementing an intelligent intermittent pumping strategy,there is a reduction of 45.14%in power consumption per hour during well opening,saving power and costs.Additionally,changes in stroke frequency before implementing the intermittent pumping strategy have a substantial impact on hourly gas production.At stroke frequencies of 1.6,2.6,and 3.6 strokes/min,the hourly gas productions are recorded as 16.14 m^(3)/h,15.24 m^(3)/h,and 0.14 m^(3)/h.The hourly gas production is low at a stroke frequency of 3.6 strokes/min.After implementing the intermittent pumping strategy,the average hourly gas production at the above stroke frequencies can be increased to 15.30 m^(3)/h.In view of the current situation regarding gas production in Hancheng gas production management area,it is recommended that an intelligent intermittent pumping strategy be implemented at a stroke frequency of 2.6 strokes/min,running for thirty minutes and then stopping for another thirty minutes.The developed intermittent pumping control technology can reduce the power consumption of the pumping unit while maintaining system stability,thereby improving the exploitation efficiency of coalbed gas.

关 键 词：中浅层煤层气 游梁式抽油机 间歇采油方式 冲次 

分 类 号：TE933.1[石油与天然气工程—石油机械设备]