Annular BOPs are a critical component of onshore and offshore exploration, providing a pressure barrier by sealing around tubular goods like drill pipe during drilling operations.
Configurations For Every Drilling Operation, Performance For Every Drilling Challenge
GE Oil & Gas Annular Blowout Preventer (ABOP) expertise dates back to 1948, when engineer Granville Knox invented the “GK” ABOP to seal around drill pipe. This spirit of innovation is a part of every BOP we offer, making GE Oil & Gas annulars among the preferred solutions for onshore and offshore drilling operations worldwide. GE Oil & Gas ABOPs offer longer uptime and extended service intervals, thanks to a configuration designed from the start for ease of maintenance and operation.
Our ABOPs feature only two moving parts, the hydraulic piston and packing unit, reducing component wear. A replaceable packing unit wear plate eliminates metal-to-metal contact, extending time between overhaul and repair intervals.
Elastomer compounds, engineered by GE, are designed, manufactured and tested in-house for reliable, consistent performance.
GK Annular Blowout Preventer
For lower maintenance and more uptime in surface applications
Applications and Benefits
Our GK annular blowout preventer’s 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 drill pipe, kelly, tool joints or tubing, and wireline as well as the open hole.
?Easy precharge and maintenance—charging assemblies are included free with every purchase;
?Outstanding durability with standard hydrogenated nitrile elastomer;
?At-a-glance precharge and bladder verification with sight glass option;
?Reduced downtime with field-replaceable diaphragms.
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 100% on pipe. The GK provides longer life when using genuine Hydril Pressure Control packing units, as shown in repeated 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, feedable elastomer continues to flow inward around the inserts to create a positive seal on the drill sting 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 changes 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 maintenance;
?An optional 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 replaceable 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 assembly;
?Engineered elastomer compounds which are carefully developed, designed, manufactured and tested by GE Oil & Gas chemists.
LL Packing Unit for the GK Annular BOP
The 250°F high-temperature unit is designed and tested for the same performance and reliability as the standard Long Life packing unit.
Applications and Benefits
The heart of every annular blowout preventer (BOP) is its packing unit, and the GE Oil & Gas Long Life (LL) packing unit is designed and tested to provide unsurpassed performance and durability.
In rigorous field and laboratory tests, our LL packing unit:
? Outlasts other replacement units by a minimum of 5-to-1
? Provides a standard production packing unit rated to 180°F per API 16A
? Provides a high-temperature model rated to 250°F per API 16A; special-order high-temperature model rated to 300°F for GK 13-5.
Key Features
The key to the LL packing unit’s remarkable performance is a revolutionary asymmetrical insert that gives it improved dynamics for longer life and enhanced reliability. Additional features include:
?Greater fatigue life without compromising the stripping performance and operating characteristics of our GK BOPs
?High-quality elastomers (natural or nitrile) reinforced with flanged steel segments
?Large volume of tough, feedable packing material capable of meeting most requirements
?Elastomers that are confined and kept under compression to provide greater resistance to tears, cuts and abrasions
?Superior elastomer-to-metal bonding
The GE Oil & Gas LL Advantage
By using genuine LL packing units as replacements, you maintain the same high performance and safety standards you’ve come to rely on with our original equipment—keeping your crew and rig out of harm’s way and in top condition. With a reputation for exceptional fatigue life, the LL packing unit and BOP have been reliable products.
BOP Services
Our services start well before delivery of the product. GE Oil & Gas engineers and product managers assist in identifying the best technology solution to meet operational objectives. Dedicated product development and testing facilities enable partnership with the customer, to jointly identify fit-for-purpose product solutions.
GE Oil & Gas services what it sells. Dedicated Capital Drilling Equipment Service Centers in Broussard, Louisiana and Aberdeen, Scotland provide complete Inspection, Overhaul, Repair and Recertification services for all ABOP products. Additionally, a team of Field Service Engineers is available worldwide to deliver on-site inspection and maintenance services to help keep drilling projects online and on budget.
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