US 12,460,499 B2
Electric annular blowout preventer with radial compression of packer
Bruce Boulanger, Katy, TX (US); Gerrit Kroesen, Katy, TX (US); and Suman Katanguri, Sugar Land, TX (US)
Assigned to Schlumberger Technology Corporation, Sugar Land, TX (US)
Appl. No. 19/111,322
Filed by SCHLUMBERGER TECHNOLOGY CORPORATION, Sugar Land, TX (US)
PCT Filed Sep. 25, 2023, PCT No. PCT/US2023/075023
§ 371(c)(1), (2) Date Mar. 13, 2025,
PCT Pub. No. WO2024/073352, PCT Pub. Date Apr. 4, 2024.
Claims priority of provisional application 63/377,645, filed on Sep. 29, 2022.
Claims priority of provisional application 63/498,066, filed on Apr. 25, 2023.
Prior Publication US 2025/0263997 A1, Aug. 21, 2025
Int. Cl. E21B 33/06 (2006.01)
CPC E21B 33/061 (2013.01) 15 Claims
OG exemplary drawing
 
1. An annular blowout preventer (BOP), comprising:
an annular body comprising a central bore extending therethrough;
at least one pivot point fixed to a top surface of the annular body;
an electric motor pivotally connected to the at least one pivot point;
a pushrod disposed longitudinally within the electric motor;
a cam ring disposed around an exterior outer diameter of the annular body;
a packer assembly disposed within the annular body about the central bore, the packer assembly comprising:
a packer element; and
a donut that circumferentially surrounds the packer element;
at least one pusher plate disposed in the annular body, the at least one pusher plate configured to radially engage the packer assembly;
a connecting rod that directly engages the at least one pusher plate,
wherein the cam ring directly interfaces with the connecting rod; and
at least one pivot pin disposed in an axial position with respect to the annular body, wherein
the cam ring provides a housing for the at least one pivot pin,
wherein an end of the pushrod is fixed within the at least one pivot pin, and
wherein rotation of the cam ring by the electric motor via the pushrod and the pivot pin in a first direction drives the connecting rod into the at least one pusher plate.