Patent ID: 11970925
Assignee: TIER 1 ENERGY SOLUTIONS, INC.
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 4:
5. A system for lifting a reservoir fluid in an oil and gas well, the system comprising a production tubing disposed in the well and defining an internal flow path for flow of the reservoir fluid, wherein the internal flow path extends in an axial uphole direction and comprises:
(a) a Venturi profile having a transverse cross-sectional area that gradually decreases in the axial uphole direction to a throat, the Venturi profile configured to flash out a free gas phase from the reservoir fluid as the reservoir fluid flows in the axial uphole direction through the Venturi profile, such that the reservoir fluid comprises the free gas phase and a liquid phase; and
(b) a diffusion profile disposed above the throat of the Venturi profile and having a transverse cross-sectional area that gradually increases in the axial uphole direction, the diffusion profile configured to condense the free gas phase into the liquid phase as the reservoir fluid flows in the axial uphole direction through the diffusion profile; and
(c) a lower inlet section defining a plurality of lower inlet ports, each having an axis aligned with the axial uphole direction
wherein the plurality of lower inlet ports comprises a central lower inlet port and a plurality of spaced apart peripheral inlet ports.