Conventional Wellheads
UH Drill-Through Wellheads
DTO Timesaving Conventional Wellheads
Sealing Technology
Thermal Equipment
Valves and Actuators
Contact Us

UH-15 Drill-Through Unihead System


The UH-15 Unihead system is a reliable, flexible, and cost-effective drilling and production solution for the most critical applications. This system is designed and tested to a 30-year field life. Our deep-water subsea experience and technologies are used throughout this reliable and field-proven system. This is a fully featured surface system using through-bore technology, including proven UWD-15 subsea technology, with the flexibility of switching from production to injection with no changes to the system.

The UH-15 drill-through Unihead is a critical application wellhead system with full metal-to-metal sealing capabilities. This system offers rig-time savings, better well control, and safer operations for rig crews. Top-of-the-line materials and cladding ensure equipment will last through the life of the well with minimum maintenance and lost production. By having the 18 3/4˝ casing landed in the starting head, the operator can easily

change out the 13˝, 9˝ and 7˝ tubing and Unihead when the well needs slot recovery, workover and so on. The UH-15 Unihead system offers the following advantages:

- Full metal-to-metal sealing

- 30-year field life

- Single piece unihead with reduced number of penetrations

- Significant rig-time savings due to through-bore Unihead design with no lock-down screws

- Well is drilled under full BOP protection with no need to remove and reinstall BOP between drilling stages

- Improved rig safety and installation efficiency

- No need for personnel to work under suspended BOP stack

- No waiting on cement with mandrel casing hangers

- Field-proven and reliable design