REMOVABLE JET PUMP Russian patent published in 2009 - IPC F04F5/16 

FIELD: engines and pumps.

SUBSTANCE: pump is designed for gas and condensate well test, completion and operation. The pump comprises a body with formed bores and a coupling arrangement connecting the body and a pump-compressor pipe string. Between the body and the coupling arrangement, there is a removable jet pump fixation ring. The jet pump accommodates a flow distributor provided with radial canals and a central actuation gas feed channel with peripheral axial passive gas channels and in-built active jet nozzle. A pipe branch with a mixing chamber the forms a suction chamber. The mixing chamber and a diffusion apparatus are series connected to the pipe branch. The top of the jet pump consists of a pocket, a rod and a grip. The rod and the grip are rigidly connected with a spear pin. The pocket functions as a coupling arrangement that connects the diffusion apparatus and the rod; it has radial holes for well production discharge and a groove for grip arrangement in working condition and with the jet pump removing. In the top of the rod, there is a spear-head. The bottom of the jet pump accommodates a back seat valve mounted in the internal groove of a flow controller connected to the flow distributor. The internal groove ensures to position the jet pump up with the closed back valve to suitable height.

EFFECT: expansion of equipment range.

3 dwg