UM Convertible-Bonnet Ram-Type BOP | SLB


Convertible-bonnet ram-type BOP

25K BOP stack in the field

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.

UM Ram-Type BOP 3D Model
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
Body styles
Single, double, triple, or quad
Lock types
Standard: Manual
Optional: Hydraulic
Hydraulically opening
Bonnet studs
Available bonnets
Large-bore and FXT bonnets
Field-replaceable bonnet cylinders, pistons, and seals
NACE standards and monogrammability to API Spec 16A