Abstract

An artificial lift string (102) has a fluid end that is coupled to and configured to be driven by an electric motor. An interconnect (114) is at an uphole end of the artificial lift string. The interconnect is configured to release a cable (116) between the string and a topside facility (110).

IPC Classes  ?

• E21B 43/12 - Methods or apparatus for controlling the flow of the obtained fluid to or in wells

Abstract

A fluid end is coupled to and configured to be driven by an electric motor. A shear interconnect is at an uphole end of the electric submersible pump. The shear interconnect is configured to shear a cable line between the electric submersible pump and a topside facility. The shear interconnect is configured to shear the cable at the electric submersible pump. A safety valve is arranged to cease flow within a wellbore, in which the electric submersible pump is installed, when the safety valve is in a closed position.

IPC Classes  ?

• E21B 43/12 - Methods or apparatus for controlling the flow of the obtained fluid to or in wells
• E21B 34/10 - Valve arrangements for boreholes or wells in wells operated by control fluid supplied from outside the borehole

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.

IPC Classes  ?

• E21B 43/12 - Methods or apparatus for controlling the flow of the obtained fluid to or in wells
• F04D 13/00 - Pumping installations or systems

Abstract

An inner barrel shaft (118) is separate from the shaft of the first rotating machine (114). A first bearing assembly (116) is configured to support the inner barrel shaft (118). The first bearing assembly (116) is separate from the first rotating machine (114). An outer barrel (108a) includes an outer barrel shaft (106) that is separate from a shaft (124) of a second rotating machine (102). The outer barrel (108a) is configured to be coupled to the shaft (124) of the second rotating machine (102). The second rotating machine is configured to drive or be driven by the first rotating machine. The outer barrel is fluidically isolated from the inner barrel. The outer barrel is configured to surround the inner barrel. The outer barrel is magnetically coupled to the inner barrel to co-rotate with the inner barrel. A second bearing assembly (104) is configured to support the outer barrel shaft. The second bearing assembly is separate from the second rotating machine (102).

IPC Classes  ?

• E21B 43/12 - Methods or apparatus for controlling the flow of the obtained fluid to or in wells
• F16C 32/04 - Bearings not otherwise provided for using magnetic or electric supporting means
• F16D 27/01 - Magnetically-actuated clutches; Control or electric circuits therefor with permanent magnets
• H02K 7/09 - Structural association with bearings with magnetic bearings