Invention Grant
- Patent Title: Lubricating downhole-type rotating machines
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Application No.: US17157383Application Date: 2021-01-25
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Publication No.: US11578535B2Publication Date: 2023-02-14
- Inventor: David Biddick , Patrick McMullen , Herman Artinian
- Applicant: Upwing Energy, Inc.
- Applicant Address: US CA Cerritos
- Assignee: Upwing Energy, Inc.
- Current Assignee: Upwing Energy, Inc.
- Current Assignee Address: US CA Cerritos
- Agency: Fish & Richardson P.C.
- Main IPC: E21B43/12
- IPC: E21B43/12 ; E21B4/00 ; E21B4/02 ; E21B41/00 ; F04B39/02 ; F04D13/10 ; F16C33/66

Abstract:
A downhole-type device includes an electric machine. The electric machine includes an electrical rotor configured to couple with a device to drive or be driven by the electric machine. An electrical stator surrounds the electric rotor. The electric stator includes a seal configured to isolate stator windings from an outside, downhole environment. An inner surface of the seal and an outer surface of the electric rotor define an annulus exposed to the outside environment. A bearing couples the electric rotor to the electric stator. A lubrication system is fluidically coupled to the downhole-type device. The lubrication system includes a topside pressure pump and a downhole-type distribution manifold configured to be used within a wellbore. The distribution manifold is fluidically connected to the topside pressure pump and the bearing to receive a flow of lubricant from the topside pressure pump.
Public/Granted literature
- US20210140240A1 LUBRICATING DOWNHOLE-TYPE ROTATING MACHINES Public/Granted day:2021-05-13
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