API 16A Annular Blowout Preventer (BOP) from China Suppliers and Factory for Reliable Pressure Control
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, ensuring consistent performance over time.
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.
There are three 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?
It effectively seals Kellys, drill pipes, tool joints, drill collars, casing, and wireline, regardless of their size, thanks to its versatile and compact design.
How does the BOP maintain well integrity during tripping operations?
Its spherical structure provides precise pressure control, enabling the safe stripping of drill pipes into and out of the wellbore, which is critical for maintaining integrity.
What makes the sealing element of this BOP reliable?
It features a self-sealing lip seal design that minimizes leak risks under fluctuating pressures, and the packing element has a high rubber storage capacity to reduce friction and extend service life.
How is maintenance simplified in this annular BOP design?
The design consists of only five major components, which streamlines disassembly and repair. Additionally, hemispherical housing ends eliminate stress concentration, making inspections faster and safer.
Are the friction surfaces protected against wear?
Yes, friction surfaces are protected by replaceable abrasion-resistant plates, which safeguard the main housing and simplify overall maintenance.
What is the standard operating pressure for these BOP models?
All listed models share a standard operating pressure of 1500 PSI, while their working pressures vary from 3000 PSI up to 10000 PSI depending on the specific model.