影响气举方式选择的因素有：井的产率、井底压力、产液指数、举升高度及注气压力等。
Factors affect gas lift options: the yield of the well bottom-hole pressure, fluid production index, lifting height and the gas injection pressure.
球塞气举方式采用U型双管柱易受套管尺寸限制，且施工作业较为复杂，其应用受到较大限制。
Pig lift method with U-shape double strings is easy to be limited by size of casing and very complicated in construction operation process. Thus, the large restrictions exist in the field application.
气举采油是世界上使用最为广泛的人工举升方式之一。
Gas lift is one of the most widely used artificial lift methods in the world.
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