China Annular Blowout Preventer (BOP) - Reliable API 16A Suppliers & Factory for Onshore and Offshore Drilling
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
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)
It 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.
Its spherical structure provides precise pressure control, which enables the safe stripping of drill pipes into and out of the wellbore, ensuring well integrity.
The self-sealing lip seal minimizes leak risks even under fluctuating pressures. Additionally, a dedicated bore in the piston allows for stroke testing to proactively monitor the sealing element's life.
The friction surfaces are protected by replaceable abrasion-resistant plates. This safeguards the main housing and significantly simplifies maintenance procedures.
Yes, the design features only five major components, streamlining disassembly and repair. Furthermore, hemispherical housing ends eliminate stress concentration, making inspections and part replacements faster and safer.
Combining rugged construction with smart engineering, this annular BOP is highly reliable and durable, making it critical for maximizing operational efficiency in both onshore and offshore drilling environments.