水平井同步回转增压排水采气技术在临兴中区的应用  

Application of synchronous rotary pressurized drainage and gas recovery technology of horizontal wells in Linxing central district

作　　者：李强 杨宇光 LI Qiang;YANG Yuguang(Jinxi Branch of China United Coalbed Methane Co.,Ltd.,Luliang,Shanxi 033000,China)

机构地区：[1]中联煤层气有限责任公司晋西分公司,山西吕梁033000

出　　处：《油气井测试》2025年第1期28-34,共7页Well Testing

基　　金：中联煤“十四五”重大科技项目“陆上非常规天然气勘探开发关键技术”(KJGG-2021-1000)。

摘　　要：随着临兴中区开发时间的延长,气井携液能力变差,越来越多的水平井出现井筒积液甚至水淹,导致减产或停产的问题。基于水平井井身结构、排液特点,对比分析了水平井常规排水采气措施适用性,开展了水平井同步回转增压排水采气技术研究,结合典型井的现场试验,分析了抽吸、回注、干管补能三种组合工艺模式下的生产数据,从工艺特点、增产效果、经济性进行了工艺评价,同步回转排水采气工艺技术将抽吸降压、注气增压相结合,提高气井携液能力。在LX-X井初次试验中排水及增产效果明显,试验阶段增产3×10^(4) m^(3)/d。该技术对低压、低产水平井的积液难题提供了一种新的解决途径,为其在临兴中区后期的应用提供了技术支撑。With the extension of development time in Linxing central district,the liquid carrying capacity of gas wells has deteriorated,and more and more horizontal wells have accumulated liquid or even flooded the wellbore,leading to production reduction or shutdown.Based on the wellbore structure and liquid discharge characteristics of horizontal wells,the applicability of conventional horizontal well drainage and gas production measures such as bubble drainage,gas lift,and velocity tube was compared and analyzed.Research on synchronous rotary boosting drainage and gas production technology for horizontal wells was carried out.Combined with a typical gas well in Linxing central district,production data under three combination process modes of suction,reinjection,and dry pipe energy supplementation were analyzed.The process evaluation was conducted from the process characteristics,production increase effect,and economy.The synchronous rotary drainage and gas production technology combines suction pressure reduction and gas injection boosting to improve the liquid carrying capacity of gas wells.In the initial experiment of the horizontal well in Linxing central district,the drainage and production increase effects were significant,The LX-X experimental stage increased production by 3×10^(4) m^(3)/d.This process has the advantage of promoting drainage and gas production in low-pressure and low yield horizontal wells,providing technical support for its application in the later stage of Linxing central district.

关 键 词：临兴中区 水平气井 排水采气工艺 同步回转泵 井筒积液 抽吸 干管补能 

分 类 号：TE375[石油与天然气工程—油气田开发工程]