OIL-WELL CENTRIFUGAL PUMP GAS SEPARATOR Russian patent published in 2006 - IPC F04D13/10 E21B43/38 

FIELD: oil producing industry.

SUBSTANCE: invention can be used at mechanized production of crude oil with high content of gas in oil by means of submersible centrifugal pump. Housing 1 of gas separator accommodates the following devices series-connected on shaft: auger 3, axial impeller 4, straightening vane assembly 5, operating impeller 6 and separators 7. Movable blades 8 of axial impeller 4 and fixed vanes 9 of straightening vane assembly 5 form axial stage of pump which increases head of gas-liquid mixture in passage part of gas separator, thus providing effective discharge of separated gas. Blades of working impeller 6, vanes of straightening vane assembly 5 and blades of axial impeller 4 are installed at definite inlet and outlet angles, and blades of working impeller 6 are clamped by outer rim.

EFFECT: improved separating characteristics and increased efficiency of gas separator owing to more efficient separation of gas from gas-liquid mixture and discharge of separated gas into annulus.

4 dwg