Page 58: of Offshore Engineer Magazine (Jul/Aug 2019)

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TECH FILES

NOV

NOV says its new drawworks is ‘World’s Largest Drawworks’ the world’s largest and strongest.

NOV claims it recently built ‘the took a holistic approach to its 20K world’s largest and strongest’ draw- initiative. The company said it saw works, the AHD-1700. The new unit a need for an AHD drawworks that will help operators handle the in- could handle increased hookload and creased casing weights and longer heave capacities. wells of the 20,000-psi (20K) high- The AHD-1700, powered by seven pressure, high-temperature (HPHT) motors, features a maximum hook- frontier. The 1,700-ton unit is will be load of 1,700 tons and full heave installed on a Transocean deepwater compensation. The unit’s fast line drillship, scheduled for delivery in pull comes in at 240,601 pounds, the ? rst quarter of 2020. The AHD- while it has a maximum continuous 1700 design came about after NOV power of 10,500 horsepower.

Source: NOV

Saipem

Hydrone-R: Resident underwater vehicle

Saipem said it has started functional test- Hydrone-R, which can operate as a ROV, ing on its Hydrone-R underwater resident tetherless ROV and AUV and is able to work vehicle at Sonsub facilities in Venice. The down to 3,000 meters water depth, is part of advanced underwater intervention drone the Hydrone ? eet of vehicles, designed to was launched in water in July to start a perform life of ? eld subsea services. comprehensive quali? cation campaign that They will use subsea docking stations, aims to test all components and subsys- called ByBase (for permanent deployment) tems, including the subsea docking base in and HyBuoy (a power and communication a real subsea scenario. Endurance and qual- buoy for temporary/permanent deploy- i? cation tests will be carried over several ment), and can also launch from a vessel months in open sea, offshore Trieste when required.

Source: Saipem

Heerema Marine Contractors

Sleipnir: World’s Largest Crane Vessel

The world’s largest crane vessel, ing all eight thrusters, the ves-

Sleipnir, has started its maiden voy- sel reached a speed of 12.2 knots, age from Singapore to Spain ahead which will help reduce transit of its ? rst project in the Mediterra- times. Sleipnir’s two 10,000-met- nean, the vessel’s owner Heerema ric-ton revolving cranes, which

Marine Contractors announced. can lift loads of up to 20,000 met-

The $1.5 billion semi-submersible ric tons in tandem, lifted loads of was built by Sembcorp Marine and 11,000 metric tons per crane. The is reportedly the world’s ? rst con- dynamic positioning (DP) system struction vessel powered by lique- kept Sleipnir stationary within the ? ed natural gas (LNG). footprint of 30 x 30 centimeters

During sea trials, when deploy- during operational work.

Source: Heerema Marine Contractors 58 OFFSHORE ENGINEER OEDIGITAL.COM