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介绍了在 4种人工举升工艺上的 2 2项近期成果。其中 ,游梁式抽油机 10项 ,螺杆泵 5项 ,水力活塞泵 4项 ,气动举升 2项和柱塞举升 1项。游梁式抽油机仍然是应用最普遍的人工举升方式 ,它由一套电机驱动的地面系统举升油管中的抽油杆 ,以实现井下泵的循环往复工作。螺杆泵系统是靠地面的驱动头转动抽油杆 ,从而驱动井下的转子在弹性定子中工作 ;水力活塞抽油系统由采用液压驱动活塞的往复地面抽油杆举升系统和由加压流体驱动的井下水力泵组成。气动抽油机涉及到由高压天然气驱动的地面活塞 /汽缸的工作 ,天然气来自油井环空或外来压缩气。柱塞举升是一套使用油管 /抽油杆较少的系统 ,它靠来自地层的地层气压力来驱动套管管柱中的柱塞 ,从而实现举升井液的目的
22 recent achievements in four types of artificial lifting processes were introduced. Among them, beam pumping unit 10, 5 screw pump, hydraulic piston pump 4, 2 pneumatic lift and plunger lift a. The beam pumping unit is still the most commonly used artificial lift method. It consists of a motor-driven ground system to lift the sucker rod in the tubing to allow the downhole pump to cycle back and forth. The screw pump system is driven by the driving head on the ground to rotate the sucker rod so as to drive the downhole rotor to work in the elastic stator. The hydraulic piston pumping system consists of a reciprocating ground sucker rod lifting system with a hydraulically driven piston and driven by pressurized fluid Downhole hydraulic pump composition. Pneumatic pumping units involve the operation of ground pistons / cylinders driven by high-pressure natural gas, which comes from the annulus of an oil well or externally compressed gas. Plunger lift is a system that uses fewer tubing / sucker rods and drives the plunger in the casing string by the formation pressure from the formation to achieve the purpose of lifting the well fluid