Blow Out Preventers (BOP)

GK Annular BOP

Applications & Benefits

The GK annular blowout preventers field-tested and proven design has provided world class dependability and quality in surface applications.

The GK provides quick, positive closing action with simplified controls to keep drilling fluids in the hole if a blowout threatens. The packing unit permits closure on the drill pipe, Kelly, tool joints or tubing and wireline as well as the open hole.

Easy precharge and maintenance.

Outstanding durability with standard hydrogenated nitrile elastomer.

At a glance precharge and bladder verification with sight glass option.

Reduced downtime with field-replaceable diaphragms world Annular BOPs are a critical component of onshore and offshore drilling activities, providing a pressure barrier by sealing around tubular goods like drill pipe during drilling operations.

The GE Oil & Gas GK Advantage

The packing unit for the GK annular BOP can hold full-rated working pressure and will close on an open hole. Before shipment, each packing unit is factory tested in a BOP – to 50% of working pressure on open hole and 1000% on pipe. The GK provides longer life when using genuine Hydril Pressure Control packing Units, as shown in repeat testing.

When the GK closes, the piston moves up, driving the elastomer and inserts inward where they quickly reach a fixed position and form a steel ring that prevents the rubber from moving upward under wellbore pressure. After the ring is formed, feed-able elastomer continues to flow inward round the inserts to create a positive seal on the drill string or open hole. Because the elastomer is primarily in compression, it resists tears, cuts and abrasions.

Key Features

The GK makes maintenance easy and lengthens the time between packing unit charges and shop repairs. The key to these benefits is a simple design that includes;

A single packing unit that closes on any size pipe or open hole and handles stripping.

Only two moving parts the piston and packing unit, for less wear and tear and maintenance.

An optical latched head for fast, easy access to the packing unit and wear seals; the majority of GK annulars have a screwed head design.

A bolted-in inner sleeve that is field replaceable.

A replacement wear plate that eliminates metal-to-metal contact between the packing unit inserts and the BOP head-extending time between major overhaul and repair.

A long piston design for complete balance and more reliable operation as well as ease of assemble.

Engineered elastomer compounds which are carefully developed designed, manufactured and tested by GE Oil & Gas Chemists.

RAM Blocks BOP

Single RAM Type BOP

Single Ram Surface (as opposed to subsea) BOPs can seal the annulus around drill pipe, casing or tubing; or shear the drill string. We have a complete range from 4.1/16″ to 13.5/8″ ID and they are pressure rated up to 5,000PSI.

Double RAM Type BOP

Double Ram Surface (as opposed to subsea) BOPs can seal the annulus around drill pipe, casing or tubing; or shear the drill string. We have a complete range from 11″ to 16.3/4″ ID and they are pressure rated up to 5,000PSI.