China API 16A Annular Blowout Preventer (BOP) Suppliers - Reliable Pressure Control Factory
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 the annular BOP seal?
The annular BOP offers versatile sealing for a full range of downhole tools. It can effectively seal Kellys, drill pipes, tool joints, drill collars, casing, and wireline, regardless of their size.
How does this BOP maintain well integrity during tripping operations?
It features a spherical structure that provides precise pressure control, which enables the safe stripping of drill pipes into and out of the wellbore, ensuring crucial well integrity during operations.
What features enhance the reliability of the BOP under fluctuating pressures?
The BOP incorporates a self-sealing lip seal design that significantly minimizes leak risks. Additionally, a dedicated bore in the piston allows for stroke testing to proactively monitor the sealing element's life.
Why is the maintenance of this annular BOP simplified?
Maintenance is straightforward because the design consists of only five major components, streamlining disassembly and repair. Furthermore, hemispherical housing ends eliminate stress concentration, making inspections and part replacements faster and safer.
How durable is the packing element?
The packing element is engineered with a high rubber storage capacity, which reduces friction during pressure cycling. It maintains positive sealing even after hundreds of full-pressure tests, ensuring a long service life.
What are the available working pressure ratings for the models?
Depending on the specific model and bore size, the available working pressures range from 3,000 PSI up to 10,000 PSI, accommodating various rigorous drilling environments.