Hydril Pressure Control GK® Annular BOP
Redefining "Field Proven" for 50+ Years
The Hydril Pressure Control GK annular defines the phrase, “field proven,” having demonstrated its world-class dependability and quality for over 50 years. It is designed specifically to make maintenance easy and to lengthen the intervals between packing unit changes and shop repairs. In addition:
- The Hydril Pressure Control packing unit for the GK can hold full rated working pressure and will close on an open hole.
- The GK produces extra uptime when compared to competing units.
- A replaceable wear plate eliminates metal-to-metal contact between the packing unit inserts and the BOP head.
- A long piston design provides complete balance, more reliable operation and ease of assembly.
- The GK is offered with a screwed head or latched head design.
- A bolted-in inner sleeve eliminates the need to stress-relieve if the sleeve is damaged in the field.
- The compact design of the GK fits rigs with small substructures.
- The GK is available with minimal lead times.
Selected Engineering Data*
| Designation | 7-3 | 7-5 | 7-10 | 7-15 | 7-20 |
|---|---|---|---|---|---|
| Bore Size (inches) | 7-1/16 | 7-1/16 | 7-1/16 | 7-1/16 | 7-1/16 |
| Head Type | Screwed | Screwed | Screwed | Screwed | Screwed |
| Working pressure (psi) | 3000 | 5000 | 10000 | 15000 | 20000 |
| Shell Test Pressure (psi) (Factory Test Only) |
6000 | 10000 | 15000 | 22500 | 30000 |
| Designation | 9-3 | 9-5 | 11-3 | 11-5 | 11-10 |
| Bore Size (inches) | 9 | 9 | 11 | 11 | 11 |
| Head Type | Screwed | Screwed | Screwed | Screwed | Screwed |
| Working pressure (psi) | 3000 | 5000 | 3000 | 5000 | 10000 |
| Shell Test Pressure (psi) (Factory Test Only) |
6000 | 10000 | 6000 | 10000 | 15000 |
| Designation | 11-10 | 13-3 | 13-3 | 13-5 | 13-5 |
| Bore Size (inches) | 11 | 13-5/8 | 13-5/8 | 13-5/8 | 13-5/8 |
| Head Type | Latched | Screwed | Latched | Screwed | Latched |
| Working pressure (psi) | 10000 | 3000 | 3000 | 5000 | 5000 |
| Shell Test Pressure (psi) (Factory Test Only) |
15000 | 6000 | 6000 | 10000 | 10000 |
| Designation | 13-10 | 13-10 | 16-5 | 16-5 | |
| Bore Size (inches) | 13-5/8 | 13-5/8 | 16-3/4 | 16-3/4 | |
| Head Type | Screwed | Latched | Screwed | Latched | |
| Working pressure (psi) | 10000 | 10000 | 5000 | 10000 | |
| Shell Test Pressure (psi) (Factory Test Only) |
15000 | 15000 | 10000 | 15000 | |
- Carbon steel, stainless steel, and Inconel® 625, are options for the ring grooves.
- SermaGuard™ coating on all internal surfaces.
- Packing units available with nitrile or natural compounds.
* See brochure for additional data