GAS-LIQUID MIXTURE CHARGING DEVICE Russian patent published in 2000 - IPC

FIELD: oil and gas industry; drilling and completion of oil and gas wells; delivery of gas- liquid mixtures and compression of gas. SUBSTANCE: proposed device has displacement feed pump, drive part including crank-and-connecting rod group and compression chamber with delivery valve and delivery pipeline in its upper part. Gas collector with suction gas valve is mounted under delivery valve and delivery pipeline. Gas valve provides communication of chamber with independent gas source or low-pressure gas-liquid mixture source. Suction liquid valve is installed in place where compression chamber communicates with delivery line of feed pump. Design peculiarity of device is that compression chamber is formed by telescopically interconnected movable and fixed (plunger) parts with lower part being fixed one forming, together with gas collector, a ring space for through water sealed joint. Upper part of compression chamber is mechanically connected with indicated-crank-and-connecting rod group of drive part with possibility of limited displacement relative to lower part. EFFECT: increased efficiency of device. 2 dwg