High-Temperature Variable-Bore Rams
H2S and high-temperature applications
Provide a seal to a range of diameters, and are suited for H2S service per NACE MR0175 and compatible with U surface ram-type BOP.
U
Surface ram-type BOP
The U BOP is the most widely used ram-type BOP in the world and has our widest bore-size range.
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 |
U
Ram-type BOP
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