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Wednesday, April 13, 2016
Chukar Waterjet Delivers ROV-Deployable Waterjet System to Major Offshore Oil and Gas Contractor
SUB-JET™ ROV-Attachable Waterjet System Operable to 3000 Meters, Cuts Steel Up to 250 mm Thick, Blasts Away Coatings and Corrosion at 3900 Bar
ST. MICHAEL, Minn.(April 12, 2016) – Chukar Waterjet, Inc. announced today that it has successfully delivered its first SUB-JET™ 3000 ROV-deployable waterjet system to a major offshore oil and gas contractor.
“With this important delivery, Chukar Waterjet is partnered with one of the premier offshore oil and gas contractors in the world,” said Bruce Kivisto, Chukar Waterjet general manager. “This contract will allow Chukar Waterjet to make major inroads into the offshore industry by demonstrating the effectiveness of Chukar’s ultra-high pressure waterjet equipment for deepwater subsea waterjet cutting and ultra-high pressure (UHP) blasting operations.”
Chukar is building out its inventory of SUB-JET systems and is in a good position to offer them for prompt delivery in 2016, Kivisto noted.
Chukar’s SUB-JET 3000 brings the power and versatility of ultra-high pressure (UHP) waterjet cutting and blasting to the deepwater subsea environment. Operable to 3000 meters, SUB-JET 3000 cuts steel as thick as 250 mm and quickly blasts away coatings, corrosion and marine growth at pressures up to 3900 bar. The SUB-JET 3000 is deployed as an underslung equipment skid on a work class ROV and is powered from the ROV’s auxiliary power.
The 100hp SUB-JET 3000 produces 7.5 liters per minute of 3900 bar ultra-high pressure water for cutting and blasting. It carries 35 liters of abrasive, providing 30 to 90 minutes of cutting time. The ROV provides hydraulic oil to power the waterjet intensifiers and operate attached tooling, 24 Vdc (300 watts) for control power, and a fiber optic data link to the topside controller. The system requires between 150 and 200 liters per minute of hydraulic oil to run at full capacity but can be operated at lower output if the auxiliary oil is not available from any given ROV. Cutting and coating removal are still effective at lower UHP output, only at slower throughput rates. The system weighs about 500 kg on the deck and is neutrally buoyant with 35 liters of abrasive.
Chukar Waterjet will unveil its new SUB-JET 3000™ ROV-attachable waterjet system at the OTC Offshore Technology Conference, May 2-5 in Houston. Look for Chukar in outdoor booth 546.
Chukar’s powerful underwater waterjet cutting and blasting systems improve the safety and effectiveness of subsea operations and have numerous advantages over conventional subsea cutting and cleaning tools, giving operators increased flexibility and access to larger projects. Unlike conventional tools, waterjet cuts without heat, reducing the hazard of igniting trapped pockets of gas during cutting. In addition, the tools used in a waterjet system cannot bind in the cut, jeopardizing asset integrity.
Chukar’s subsea waterjet equipment has numerous applications for deepwater emergency response operations, salvage operations, and rapid de-mobilization operations. Chukar systems quickly blast away even the toughest coatings, including three-layer polypropylene (3LPP), and provide a safer, more effective method for cutting multi-string casings for well severance. Waterjetting equipment also may be used to provide turbulence in a stream of methanol for hydrate remediation, an application Chukar developed in emergency response to the Gulf oil spill, when the company was asked to rapidly manufacture a system to clear a clogged containment system 1500 meters underwater.
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