WELL OPERATION METHOD AND JET PUMP WITH RELIEF PASSAGE Russian patent published in 2023 - IPC E21B43/00 F04F5/54 

FIELD: oil and gas industry.

SUBSTANCE: methods for operating wells with a jet pump. To implement the method of operating wells, a production pump and a jet pump located above the production pump are lowered and installed in the well on a pipe string. The fluid is supplied from the production pump to the jet pump, the fluid and the gas-liquid mixture are extracted to the surface by the jet and production pumps together. The jet pump is configured to provide at least two flow-through systems for supplying fluid from the production pump simultaneously to at least two flow channels located in the jet pump housing. Fluid is supplied from the production pump simultaneously to at least two flow channels of the jet pump, limiting the pressure range under the jet pump to a value not exceeding the value of the choke restriction pressure by the relief passage, configured to choke the incoming fluid flow, limiting the inlet pressure to the jet pump and back pressure on the production pump. The second channel is a jet course located with the possibility of passing the flow through the nozzle, the receiving chamber and the mixing chamber and with the possibility of ejecting the gas-liquid mixture through at least one suction element from the annulus through the receiving chamber into the mixing chamber. A jet pump with a discharge channel is declared.

EFFECT: increasing of the overhaul period of the jet pump.

10 cl, 5 dwg