空心抽油杆排液采气新工艺研究

Study of A New Technology of Gas Recovery by Liquid Drainage with Hollow Sucker Rod

低压气藏由于地层压力低，原有生产管柱携液能力差，致使低压低产气井井筒积液严重。采用空心抽油杆作为排液采气管柱，并进行了与小直径气举阀匹配的闭式气举设计，为低压气藏和深层凝析气藏开采提供了新方法。

The low-pressure gas reservoir formation pressure due to the low liquid carrying capacity of the existing production string poor, resulting in severe low-voltage low-yield gas well bore fluid. Using hollow sucker rod string as the liquid discharge of gas, and carried out with the small-diameter gas-lift valve designed to match the closed air-lift for the low- pressure gas reservoirs and deep condensate gas reservoir provides a new approach.