SUSPENDED COMPRESSOR FOR PUMPING GAS FROM ANNULAR SPACE OF OIL WELL Russian patent published in 2020 - IPC E21B43/00 F04B35/01 

FIELD: oil and gas industry.

SUBSTANCE: invention relates to oil industry and can be used for extraction of gas from annular space and its pumping into collector in well equipped with sucker-rod pump. Suspension compressor includes cylinder partially filled with oil, which is hinged to rack base. There is a piston with a rod, pivotally attached to the rocker arm, a suction and pressure gas pipelines with valves. Gas pipelines are connected to compressor cylinder. Cavity of cylinder of compressor above upper side of piston is communicated with atmosphere. External surface of the cylinder is equipped with coaxially cylindrical oil chamber. Lower part of cylinder is stepped with lower small cylinder. Piston bottom is made with cylindrical coaxial small plunger with outer diameter, providing interaction of small plunger with small cylinder when piston moves with rod down. Cylinder high pressure cavity is interconnected with oil chamber. This cavity is connected by channel. It is made in cavity of piston rod, connected through small plunger with check valve with small cylinder, which transmits oil from bottom to top. Note here that oil is uniformly fed along piston perimeter. Small cylinder is connected with oil chamber by channel with oil valve. Cylinder low-pressure cavity is interconnected by central channel with suction and pressure gas pipelines with valves. Hinge of piston with rod is fixed to front arm of balancer rocker with possibility of changing position relative to balance beam head. Cylinder hinge is bolted at the pole base.

EFFECT: increased efficiency of compressor operation due to increased efficiency, elimination of emergency situation and increased between overhaul period.

3 cl, 1 dwg