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Upper Inside Blowout Preventer (Upper IBOP)
Upper Inside Blowout Preventer (Upper IBOP) is an API 7-1 well control valve installed at the upper position of the drill string, typically integrated with top drive systems, providing fast internal pressure isolation during drilling operations.
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Well Control
The Upper Inside Blowout Preventer (Upper IBOP) is a critical internal well control valve installed at the upper position of the drill string, commonly integrated with top drive drilling systems.
It allows normal forward circulation during drilling operations while providing rapid internal shut-off capability in the event of backflow, kick, or emergency pressure control situations.
UNIONLEVER OFS supplies Upper IBOP solutions designed specifically for top drive applications, including:
- Upper IBOPs for top drive drilling systems
- Manual or wrench-operated shut-off mechanisms
- Standard service and optional H2S service trim
- OEM / interchangeable designs compatible with widely used international Upper IBOP configurations
- Repair / redress kits supplied upon request
- Optimized for top drive interface and upper drill string installation
- Full-bore internal flow path to minimize pressure loss
- High-strength forged alloy steel body for torsional and axial loads
- Fast manual shut-off for emergency well control response
- Dimensionally and functionally interchangeable with mainstream Upper IBOP designs
- Top drive drilling operations
- Onshore and offshore rigs equipped with top drive systems
- Routine drilling, tripping, and circulation operations
- Emergency internal well control during drilling activities
- Standard: API 7-1 (as applicable)
- Installation Position: Upper drill string / top drive interface
- Working Pressure: Configurable based on well control requirements
- Service Condition: Standard service or optional H2S service
- Operation: Manual / wrench-operated (configuration dependent)
Upper IBOPs supplied by UNIONLEVER OFS are manufactured and inspected under controlled quality systems. Typical inspection scope may include:
- Raw material traceability and certification
- Heat treatment verification
- Magnetic Particle Inspection (MPI)
- Ultrasonic Testing (UT), when required
- Hydrostatic pressure and functional testing
To support long-term operation and reduce downtime, UNIONLEVER OFS provides Upper IBOP repair / redress kits upon request.
- Sealing elements and internal wear components
- Service parts matched to supplied Upper IBOP configuration
- Technical assistance for maintenance, troubleshooting, and part identification
- Required size and top/bottom connection type
- Working pressure rating
- Service condition (standard or H2S / sour service)
- Thread requirement: API (EUE / IF / REG), or premium / special profiles
- Quantity, project timeline, and inspection/document requirement (if any)
Providing the above information helps our engineering team minimize clarification cycles, ensure correct selection, and respond faster with accurate pricing and lead time.
Our Full Opening Safety Valves (FOSV / TIW), Kelly Valves, and Inside BOP Valves are API-compliant, CNC-machined, and hydrostatic-tested before delivery to ensure reliable well-control performance, with repair kits available when required.
We supply these tools to reputable clients such as NOV, ENI SAIPEM, ADES Saudi, Weatherford, and Sinopec Global, and are recognized for consistent quality and dependable delivery.
For premium connections, we can provide XT (XT39 / XT54), Tenaris Hydril Wedge 513 / 511, PH6 / CS / BLUE, New VAM, VAM TOP, VAM FJL, JFE BEAR, JFE FOX, PAC, and other high-performance thread types widely used in offshore and high-pressure drilling operations.
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sales@unionleverofs.com
ofs@unionlever.com
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Related Products
Building upon more than a decade of field experience, Unionlever OFS offers a comprehensive portfolio covering downhole drilling tools, fishing tools, handling tools, well control equipment, cementing tools, and solid-control systems.
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Unionlever Oilfield Equipment Co., Limited
A Member of
Unionlever International Group Limited
(Established Since 2010)
"To be a globally trusted leader in oilfield equipment and integrated supply solutions."
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