U

Surface ram-type BOP

The U BOP is designed to maximize reliability and performance while simplifying maintenance.

Hydraulic stud tensioning is available on larger sizes to ensure that stud loading is consistently accurate and even.
Bonnet seal carriers eliminate the need for high makeup torque on bonnet studs and nuts.
Wedge locks can be interlocked with the BOP operating system using sequence caps to ensure the wedge lock is retracted before applying pressure to open the BOP.
Other features include hydraulically opening bonnets, a forged body, and a wide selection of rams to meet a variety of applications.

Specifications
Application	Offshore (surface) and onshore
Bore sizes and working pressures	7 1/16, 11, and 13 5/8 in: 3,000 to 15,000 psi 16 3/4 in: 3,000 to 10,000 psi 20 3/4 in: 3,000 psi 21 1/4 in: 2,000, 5000, and 10,000 psi 26 3/4 in: 3,000 psi
Body styles	Single, double, triple, or quad
Rams	Pressure-energized
Lock types	Standard: Manual Optional: Hydraulic
Bonnets	Hydraulically opening
Available bonnets	Large-bore and FXT
Maintenance	Field-replaceable bonnet cylinders, pistons, and seals