U- Shaped Ram BOP
1. U-Shaped Ram BOP is designed and manufactured according to API
Spec 16A standard and GB/T20174 Drilling and production
equipment-Drill-through equipment, and is equipped with rams of
various sizes.
2. With the best quality front ram rubber, top ram rubber and
flange sealing stacks, U-shaped ram BOP can work during the extreme
working condition including extremely high or low temperature and
extreme chemical environment. It includes U single ram BOP & U
double ram BOP.
STRUCTURE FEATURES
1.The pressure-bearing components are forged, so it has better
strength and impact toughness;
2. Floating sealing is applied to the cylinder cover and the
open/close of the cover is realized by hydraulic power, so it is
quick and convenient for changing rams;
3.The auxiliary oil cylinder affords a smaller volume with same
function;
4.The ram rubber has massive storage volume, and it adopts
self-contained sealing;
5.The standard configuration includes a manual locking device,
which ensures the ram is closed tightly in case there is a
hydraulic pressure loss;
6. Both the manual and hydraulic locking device and the auxiliary
oil cylinder can be installed flexibly into different positions
according to customers’ requirements, and the installation
positions can be changed easily.
| Type U BOP operation data and needed oil quantity | Shear ram chamber operation data and needed oil quantity |
| Drift diameter/ pressure | Oil quantity for opening the ram ( L/set) | Oil quantity for closing the ram ( L/set) | Circle number of locking shaft | Closing ratio | Opening ratio | Oil quantity for opening the ram ( L/set) | Oil quantity for closing the ram ( L/set) | Circle number of locking shaft | Closing ratio | Opening ratio |
| 7 1/16” / All pressure | 4.6 | 4.6 | 18 | 6.9:1 | 2.2:1 | - | - | - | - | - |
| 11” / the pressure except 15000psi | 10.6 | 11 | 30 | 7.3:1 | 2.5:1 | 25.8 | 26.5 | 30 | 12:1 | 4.8:1 |
| 11”/ 5000psi | 21.6 | 21.9 | 31 | 9.8:1 | 2.2:1 | 33.7 | 34.1 | 31 | 15.2:1 | 3.7:1 |
| 13 5/8” / the pressure except 15000psi | 20 | 21 | 37 | 7.0:1 | 2.3:1 | 39.8 | 41.3 | 37 | 10.8:1 | 4.5:1 |
| 13 5/8” /15000psi | 39.4 | 4.2 | 45 | 10.6:1 | 3.6:1 | 60.6 | 61.4 | 45 | 16.2:1 | 6:1 |
| 20 3/4” / 3000psi | 16.7 | 17.7 | 48 | 7.0:1 | 1.3:1 | 54.2 | 56.4 | 48 | 10.4:1 | 4.4:1 |
| 21 1/4” / 2000psi | 16.7 | 17.7 | 48 | 7.0:1 | 1.3:1 | 54.2 | 56.4 | 48 | 10.4:1 | 4.4:1 |
