China Ram-Type Blowout Preventers - Reliable Well Control Equipment from Leading Suppliers and Factory
Design and Construction
All Ram BOPs were constructed from high-strength alloy steel, with all pressure-containing components subjected to refined forging and strict heat treatment for maximum durability and resistance to cracking or inclusions.
Extended ram chamber runway design minimizes stress concentration, ensuring long service life under demanding operating conditions.
Hydraulic systems operate both bonnet and ram movements through a streamlined single-line system, enabling efficient and reliable operation.
Key Features
Pressure-energized rams with hydraulically actuated bonnets for rapid and secure ram replacement
Manual locking screws included as standard
Optional hydraulic locking devices for safe remote operation
H2S-resistant internal components for sour service environments
Variable Bore Rams (VBRs) compatible and interchangeable with leading OEM designs
Large Bore Shear Bonnets engineered for heavy-duty operations, OEM interchangeable
Ram boosters available and OEM interchangeable
Seal kits fully interchangeable with OEM standards for simplified maintenance and local sourcing
Advantages
Field-proven reliability
Designed with safety and durability as the top priority, ensuring dependable well control in the harshest environments.
Operational efficiency
Hydraulically opening bonnets allow for quick and easy ram change-outs, reducing non-productive time.
OEM interchangeability
All critical components and consumables match OEM specifications, lowering maintenance costs and improving spare parts availability.
Ram BOP Specification
| Model | Main Bore mm(in) |
Working pressure MPa(psi) |
Oil quantity for opening L (Single Cylinder) |
Oil quantity for closing L (Single Cylinder) |
|---|---|---|---|---|
| (2)FZ18-21 | 179.4(7-1/16) | 21(3000) | 1.6 | 2 |
| (2)FZ18-35 | 179.4(7-1/16) | 35(5000) | 1.6 | 2 |
| (2)FZ18-70 | 179.4(7-1/16) | 70(10000) | 2.2 | 2.5 |
| (2)FZ18-105 | 179.4(7-1/16) | 105(15000) | 7.4 | 8 |
| (2)FZ23-21 | 228.6(9) | 21(3000) | 1.3 | 1.5 |
| (2)FZ23-35 | 228.6(9) | 35(5000) | 4.7 | 5.3 |
| (2)FZ23-70 | 228.6(9) | 70(10000) | 7 | 8 |
| (2)FZ23-105 | 228.6(9) | 105(15000) | 10.2 | 10.9 |
| (2)FZ28-21 | 279.4(11) | 21(3000) | 2.7 | 3.2 |
| (2)FZ28-35 | 279.4(11) | 35(5000) | 5.4 | 6.2 |
| (2)FZ28-70 | 279.4(11) | 70(10000) | 7 | 8 |
| (2)FZ28-105 | 279.4(11) | 105(15000) | 14.6 | 16.7 |
| (2)FZ35-21 | 346.1(13-5/8) | 21(3000) | 7.8 | 8.9 |
| (2)FZ35-35 | 346.1(13-5/8) | 35(5000) | 7.9 | 9.3 |
| (2)FZ35-70 | 346.1(13-5/8) | 70(10000) | 18 | 20.7 |
| (2)FZ35-105 | 346.1(13-5/8) | 105(15000) | 17.4 | 20 |
| (2)FZ43-35 | 425.5(16-3/4) | 35(5000) | 10.3 | 11.6 |
| (2)FZ48-35 | 476.3(18-3/4) | 35(5000) | 24.5 | 27.9 |
| (2)FZ48-70 | 476.3(18-3/4) | 70(10000) | 24.5 | 27.9 |
| (2)FZ53-21 | 527.1(20-3/4) | 21(3000) | 12.2 | 13.6 |
| (2)FZ54-14 | 539.8(21-1/4) | 14(2000) | 12.1 | 13.8 |
| (2)FZ54-35 | 539.8(21-1/4) | 35(5000) | 26 | 29.6 |
| (2)FZ68-21 | 679.5(26-3/4) | 21(3000) | 32.6 | 37 |
Frequently Asked Questions (FAQ)
What materials are used in the construction of the Ram BOPs?
All Ram BOPs are constructed from high-strength alloy steel. The pressure-containing components undergo refined forging and strict heat treatment to ensure maximum durability and resistance to cracking.
Are these Ram BOPs suitable for sour service environments?
Yes, they are equipped with H2S-resistant internal components, making them fully capable of operating safely in sour service environments.
How does the extended ram chamber runway improve performance?
The extended ram chamber runway design minimizes stress concentration, which significantly ensures a longer service life even under highly demanding operating conditions.
Are the components interchangeable with OEM designs?
Absolutely. Critical components including Variable Bore Rams (VBRs), Large Bore Shear Bonnets, ram boosters, and seal kits are fully compatible and interchangeable with leading OEM standards.
How is maintenance efficiency improved on these units?
Operational efficiency is enhanced through hydraulically actuated bonnets, which allow for rapid and secure ram replacement, drastically reducing non-productive downtime.
Do the Ram BOPs feature locking mechanisms?
Yes, manual locking screws are included as a standard feature. Additionally, optional hydraulic locking devices are available for safe remote operation.