精选优质文档-倾情为你奉上All petroleum reservoirs experience pressure declines, and most wells require artificial lift at some point, most commonly where reservoir pressure is insufficient for natural flow. Artificial lift systems may also be used to enhance production from flowing wells with a reservoir pressure that is insufficient to produce a require amount of fluid. 所有的油气储层都要经历压力降低的过程, 大多 数井在某些阶段需要人工举升, 通常是在储层的 压力不足以自流自喷。 人工举升系统也可以用于 自喷井和储层压力不足以生产所需量时的增产。Extensive research and field studies hav
