China Annular Blowout Preventer (BOP) Suppliers - API 16A Certified Factory for Reliable Pressure Control Devices
Key Capabilities
Compact in design, this annular BOP offers versatile sealing for a full range of downhole tools: it effectively seals Kellys, drill pipes, tool joints, drill collars, casing, and wireline, regardless of size. Its spherical structure provides precise pressure control, enabling safe stripping of drill pipes into and out of the wellbore—a critical function for maintaining well integrity during tripping operations.
Engineering Advantages
Enhanced Reliability
Features a self-sealing lip seal design that minimizes leak risks, even under fluctuating pressures. A dedicated bore in the piston allows for stroke testing, enabling proactive monitoring of sealing element life—reducing unplanned downtime.
Durability
Friction surfaces are protected by replaceable abrasion-resistant plates, safeguarding the main housing and simplifying maintenance.
Long-Lasting Sealing
The packing element is engineered with high rubber storage capacity, reducing friction during pressure cycling and extending service life. It maintains positive sealing even after hundreds of full-pressure tests.
Simplified Maintenance
With only five major components, the design streamlines disassembly and repair. Hemispherical housing ends eliminate stress concentration under pressure, making inspection and part replacement faster and safer.
This annular BOP combines rugged construction with smart engineering, ensuring reliable pressure control, easy servicing, and long-term durability—critical for maximizing operational efficiency in both onshore and offshore drilling environments.
Available Models
| Model | Bore (in) | Working Pressure | Operating Pressure | Weight |
|---|---|---|---|---|
| FH18-21 | 7 1/16" | 3000PSI | 1500PSI | 3157lb |
| 1432kg | ||||
| FH18-35 | 7 1/16" | 5000PSI | 1500PSI | 3351lb |
| 1520kg | ||||
| FH23-35 | 9" | 5000PSI | 1500PSI | 6724lb |
| 3050kg | ||||
| FH28-21 | 11" | 3000PSI | 1500PSI | 7496lb |
| 3400kg | ||||
| FH28-35 | 11" | 5000PSI | 1500PSI | 10236lb |
| 4643kg | ||||
| FH28-70/105 | 11” | 10000PSI | 1500PSI | 15500lb |
| 7031kg | ||||
| FH35-21 | 13 5/8" | 3000PSI | 1500PSI | 12566lb |
| 5700kg | ||||
| FH35-35 | 13 5/8" | 5000PSI | 1500PSI | 14215lb |
| 6448kg | ||||
| FH35-70/105 | 13 5/8” | 10000PSI | 1500PSI | 19800lb |
| 8981kg | ||||
| FH48-35 | 18 3/4" | 5000PSI | 1500PSI | 35979lb |
| 16320kg | ||||
| FH48-70/105 | 18 3/4” | 10000PSI | 1500PSI | 70955lb |
| 32185kg | ||||
| FH53-21 | 20 3/4" | 3000PSI | 1500PSI | 15726lb |
| 7133kg | ||||
| FH54-35 | 21 1/4" | 5000PSI | 1500PSI | 44577lb |
| 20220kg |
Frequently Asked Questions (FAQ)
What types of downhole tools can this annular BOP seal?
Our annular BOP offers versatile sealing for a full range of downhole tools, effectively sealing Kellys, drill pipes, tool joints, drill collars, casing, and wireline, regardless of their size.
How does the BOP maintain well integrity during operations?
It utilizes a spherical structure that provides precise pressure control. This enables the safe stripping of drill pipes into and out of the wellbore, which is a critical function for maintaining well integrity during tripping operations.
What features enhance the reliability of this BOP?
It features a self-sealing lip seal design that minimizes leak risks even under fluctuating pressures. Additionally, a dedicated bore in the piston allows for stroke testing, enabling proactive monitoring of the sealing element life.
How is the durability of the main housing protected?
The friction surfaces are protected by replaceable abrasion-resistant plates. This design safeguards the main housing and significantly simplifies ongoing maintenance.
Why is this annular BOP easy to maintain?
The design streamlines disassembly and repair by utilizing only five major components. Furthermore, the hemispherical housing ends eliminate stress concentration under pressure, making inspection and part replacement both faster and safer.
Does the sealing element require frequent replacement?
No, the packing element is engineered with a high rubber storage capacity that reduces friction during pressure cycling. It maintains positive sealing even after hundreds of full-pressure tests, ensuring a long service life.