US 12,404,735 B2
Forged bop internal cavity profile for workover rigs
Prashant N Akhare, Cypress, TX (US)
Filed by WORLDWIDE OILFIELD MACHINE, INC., Houston, TX (US)
Filed on Jul. 10, 2023, as Appl. No. 18/349,405.
Claims priority of provisional application 63/412,311, filed on Sep. 30, 2022.
Prior Publication US 2024/0110455 A1, Apr. 4, 2024
Int. Cl. E21B 33/06 (2006.01)
CPC E21B 33/062 (2013.01) 19 Claims
OG exemplary drawing
 
1. A BOP, comprising:
a forged BOP body, said forged BOP body comprising six planar outer sides that form a box-like structure, said forged BOP body being free of casting defects;
a first planar side of said six planar outer sides comprising a first piston rod opening sized to receive a first piston rod;
a second planar side of said six planar outer sides, said second planar side being on an opposite side of said forged BOP body from said first planar side, said second planar side comprising a second piston rod opening sized to receive a second piston rod;
a third planar side of said six planar outer sides comprising a rectangular opening that extends into a machined internal cavity inside of said forged BOP body, said rectangular opening and said machined internal cavity being sized to receive a first ram with sufficient space within said machined internal cavity to allow connection and disconnection of said first ram with said first piston rod, said first ram comprising a first ram seal;
a fourth planar side of said six planar outer sides, said fourth planar side being on an opposite side of said forged BOP body from said third planar side;
a fifth planar side of said six planar outer sides, said fifth planar side comprising a throughbore sized to receive a pipe through said forged BOP body;
a sixth planar side on an opposite side of said forged BOP body from said fifth planar side, said throughbore extends through said fifth planar side and said sixth planar side;
said machined internal cavity inside of said forged BOP body comprising,
a lower surface machined into said forged BOP body, said lower surface being positioned so that said first ram seal of said first ram is not engaged with a flat upper sealing surface while in an open position, said first ram engaging a raised landing surface during movement of said first ram from said open position to a closed position such that said first ram seal on said first ram engages said flat upper sealing surface in said closed position, said flat upper sealing surface being positioned above said lower surface and machined into said forged BOP body; and said raised landing surface being machined into said forged BOP body, said raised landing surface is positioned on a portion of said lower surface, said raised landing surface is positioned to guide said first ram to engage said first ram seal with said flat upper sealing surface when said first ram is moved to said closed position.