US 11,939,849 B2
System and method for a mechanical shaft lock on an electric submersible pump
Mitchell Lee Crane, Tulsa, OK (US); and Jose Mauricio Oviedo Gualdron, Tulsa, OK (US)
Assigned to Extract Companies, LLC, Tulsa, OK (US)
Filed by EXTRACT MANAGEMENT COMPANY, LLC, Tulsa, OK (US)
Filed on Oct. 25, 2022, as Appl. No. 17/973,366.
Claims priority of provisional application 63/271,293, filed on Oct. 25, 2021.
Prior Publication US 2023/0128922 A1, Apr. 27, 2023
Int. Cl. E21B 43/12 (2006.01); F04D 1/06 (2006.01); F04D 13/08 (2006.01); F04D 25/06 (2006.01); F04D 29/044 (2006.01); F04D 29/62 (2006.01); F16D 9/06 (2006.01)
CPC E21B 43/128 (2013.01) [F04D 1/06 (2013.01); F04D 13/086 (2013.01); F04D 25/0606 (2013.01); F04D 25/0686 (2013.01); F04D 29/044 (2013.01); F04D 29/628 (2013.01); F16D 9/06 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A mechanical shaft lock configured to stop a rotation of a shaft in an electric submersible pump, the mechanical shaft lock comprising:
a mechanical shaft lock shaft configured to be operably connected to a shaft on the electrical submersible pump;
at least one shear pin;
a mechanical shaft lock spring surrounding the mechanical lock shaft; and
at least one mechanical shaft lock shearing slot located on the mechanical shaft lock shaft;
wherein the at least one shear pin is configured to engage or disengage with the at least one mechanical shaft lock shearing slot such that when the at least one shear pin is disengaged from the mechanical lock shaft slot the mechanical shaft lock shaft can rotate and when the at least one shear pin is engaged with the mechanical shaft lock shaft slot the mechanical shaft lock shaft is prohibited from rotating; and
wherein the mechanical shaft lock comprises an upper end and a lower end and wherein the mechanical shaft lock is configured to be attached to a pump head on the upper end and a pump on the lower end.