US 12,454,872 B2
Electric blowout preventer bonnet using linear actuated roller screws
Suman Katanguri, Houston, TX (US); Todor K. Sheiretov, Houston, TX (US); and Bruce Boulanger, Sugar Land, TX (US)
Assigned to Schlumberger Technology Corporation, Sugar Land, TX (US)
Filed by Schlumberger Technology Corporation, Sugar Land, TX (US)
Filed on Mar. 27, 2024, as Appl. No. 18/618,248.
Application 18/618,248 is a continuation of application No. 17/805,146, filed on Jun. 2, 2022, granted, now 11,952,856.
Claims priority of provisional application 63/363,727, filed on Apr. 28, 2022.
Claims priority of provisional application 63/196,919, filed on Jun. 4, 2021.
Prior Publication US 2024/0229590 A1, Jul. 11, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. E21B 33/06 (2006.01); E21B 47/00 (2012.01)
CPC E21B 33/061 (2013.01) [E21B 47/00 (2013.01)] 8 Claims
OG exemplary drawing
 
1. An electric bonnet comprising:
a housing;
a guide piston at least partially disposed in the housing, the housing being void of any hydraulic fluid;
a plurality of electric motors;
a plurality of reducers, wherein each reducer of the plurality of reducers is coupled to a corresponding electric motor of the plurality of electric motors; and
a plurality of actuators, wherein each actuator of the plurality of actuators is coupled to a corresponding reducer of the plurality of reducers,
wherein the guide piston is connected to the plurality of actuators, and
wherein the plurality of actuators comprises a plurality of roller screw assemblies.