China Ram-type Blowout Preventers: Reliable Well Control Equipment from Trusted Suppliers and Factory
Design and Construction
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
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
What materials are used to construct the Ram BOPs?
All our 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 or inclusions.
Are the internal components suitable for sour service environments?
Yes, the Ram BOPs are equipped with H2S-resistant internal components, making them highly reliable and safe for use in sour service conditions.
Can I use OEM spare parts for maintenance?
Absolutely. All critical components, including Variable Bore Rams (VBRs), shear bonnets, ram boosters, and seal kits, are fully interchangeable with leading OEM designs, which lowers maintenance costs and improves spare parts availability.
How does the hydraulic system operate?
The hydraulic system operates both the bonnet and ram movements through a streamlined single-line system. This ensures efficient and reliable operation while allowing for quick and easy ram change-outs to reduce non-productive time.
What locking mechanisms are provided for safety?
Manual locking screws are included as a standard feature. Additionally, optional hydraulic locking devices are available for safe remote operation during well control procedures.
What is the working pressure range of these BOP models?
Depending on the specific model selected, the working pressure ranges from 14 MPa (2,000 psi) up to 105 MPa (15,000 psi), accommodating a wide variety of heavy-duty drilling requirements.