US 12,006,781 B2
Blowout preventer with multiple application ram blades
Micah Threadgill, Cypress, TX (US)
Assigned to SCHLUMBERGER TECHNOLOGY CORPORATION, Sugar Land, TX (US)
Appl. No. 17/604,513
Filed by SCHLUMBERGER TECHNOLOGY CORPORATION, Sugar Land, TX (US)
PCT Filed Jan. 30, 2020, PCT No. PCT/US2020/015787
§ 371(c)(1), (2) Date Oct. 18, 2021,
PCT Pub. No. WO2020/219137, PCT Pub. Date Oct. 29, 2020.
Claims priority of provisional application 62/836,699, filed on Apr. 21, 2019.
Prior Publication US 2022/0213757 A1, Jul. 7, 2022
Int. Cl. E21B 33/06 (2006.01)
CPC E21B 33/063 (2013.01) 20 Claims
OG exemplary drawing
 
1. A blowout preventer for shearing structures positioned in a bore extending through the blowout preventer, the blowout preventer comprising:
a body having a bore, a first guideway, and a second guideway;
a first ram movably positioned relative to the first guideway and movable toward the bore, the first ram comprising a first blade having at least one flat side, the first blade comprising:
a blunt leading contour running parallel to a plane of the at least one flat side along a distal end of the first blade,
at least one upper inclined surface above the blunt leading contour, and
at least one lower declined surface below the blunt leading contour,
wherein the first blade is positioned and is movable above a first plane;
a second ram movably positioned relative to the second guideway and movable toward the bore, the second ram comprising a second blade, the second blade comprising:
a leading contour, and
at least one lower declined surface,
wherein the second blade is positioned and is movable below the first plane,
wherein the blunt leading contour of the first blade is disposed on and movable in a second plane, wherein the first plane, the second plane, and the plane of the at least one flat side of the first blade are parallel, and wherein the at least one lower declined surface of the first blade is between the first and second planes.