煤层气L型水平井潜油隔膜泵配套工艺技术研究  

Research on Application Technology of Submersible Diaphragm Pump in Coalbed Methane L-shaped Horizontal Wells

作　　者：薛志亮 XUE Zhiliang(Jintai Branch,China United Coalbed Methane(Shanxi)Co.,Ltd.,Shanxi 048000)

机构地区：[1]中联煤层气(山西)有限责任公司晋太分公司,山西048000

出　　处：《中国煤层气》2024年第3期16-19,共4页China Coalbed Methane

摘　　要：煤层气L型水平井占比的提高使得无杆举升工艺愈发受到重视,潜油隔膜泵液固两相适应性好、井下通过性好,具备在L型水平井中推广的潜力。沁南某气田在2019年引入后,针对在试验过程中出现的气锁故障,研制了三相气液分离装置+解气锁接头+沉砂装置的多重防砂除气工艺,搭配自循环回注水等配套工艺,经现场试验,成功解决了气锁问题,初步建立了潜油隔膜泵排水采气工艺体系,适合于在中低产水量的煤层气L型水平井推广应用。As the the proportion of L-shaped horizontal wells in coalbed methane fields increases,the rodless lifting technology has been paid more attention to.With good adaptability to liquid-solid phases and excellent underground passability,the submersible diaphragm pump shows potential for widespread application in L-shaped horizontal wells.After being introduced in a certain gas field in Southern Qinshui Basin in 2019,issues such as the airlock faults were found in the process of testing,a multi-sand control and degassing technology were developed,incorporating a three-phase gas-liquid separation unit,a gas release lock joint and a sand settling unit,matching the supporting technology,such as self-circulating water re-injection.The field test successfully resolves the issue of the airlock,leading to the initial estab-lishment of a drainage and gas recovery system using a submersible diaphragm pump.This system is suit-able for the promotion and application of L-type horizontal wells with medium and low water production.

关 键 词：煤层气 潜油隔膜泵 水平井 防砂除气 

分 类 号：TE375[石油与天然气工程—油气田开发工程]