Bonnet Assembly Options
Designed specifically for our equipment
Employ more closing force with greater certainty in a smaller footprint.
Convertible-bonnet ram-type BOP
The UM convertible-bonnet ram-type BOP is a lightweight BOP designed for easy maintenance and long life. It complements our U BOP and includes bonnets that can be installed on any comparably sized U BOP. Its design incorporates a single bonnet that can be converted between shear and pipe modes, eliminating the need for a separate shearing bonnet.
Optional bonnet seal carriers eliminate high makeup torque on bonnet studs. The UM BOP allows seal replacement with the bonnet in ram-change position without having to remove the bonnet. Wedge lock operating systems are interlocked using sequence caps to ensure that the lock is retracted before applying pressure to open the BOP.
||Offshore (surface) and onshore
|Bore sizes and working pressures
||7 1/16 in: 5,000 to 15,000 psi
11 in: 5,000 to 15,000 psi
13 5/8 in: 5,000 to 10,000 psi
||Single, double, triple, or quad
||Large-bore and FXT bonnets
||Field-replaceable bonnet cylinders, pistons, and seals
||NACE standards and monogrammability to API Spec 16A