Home | Contact ST  

Offshore Oil & Ocean Engineering


August 2013 Issue

Fairmount Glacier Delivers Falcon 100 Rig
Super tug Fairmount Glacier delivered rig Falcon 100 safely offshore Pointe-Noire, Congo. The rig was towed from Rio de Janeiro, Brazil, via the south Atlantic Ocean over a distance exceeding 3,400 miles.

Fairmount Glacier was mobilized from Trinidad. First, the tug towed Falcon 100 from its drilling location offshore Macae, Brazil, to offshore Rio de Janeiro. Then it assisted the rig in anchor-handling activities and loading equipment, as well as installing a new bridle—the connection between rig and towing line.

The Falcon 100 is a 1974-build semisubmersible drilling rig owned by Transocean (Vernier, Switzerland) and capable of drilling to a depth of 7,620 meters.

GE to Supply Power, Propulsion For China LNG Carriers
The first electrically propelled LNG carriers, each at 174,000 cubic meters, to be built in China will incorporate power and propulsion systems developed and built by GE Power Conversion (Paris, France). Hudong-Zhonghua Shipbuilding Group (Shanghai, China), part of the China State Shipbuilding Corp. (Beijing, China), signed contracts with GE for the supply of power and propulsion systems for six LNG carriers that it will build in its shipyard in Shanghai for major Asian shipping companies, including China Shipping Group (Shanghai) and Sinopec Kantons Holdings Ltd. (Hong Kong, China).

The carriers, which will transport LNG from Australia to China, will be delivered between April 2016 and November 2017.

For each vessel, GE will supply two propulsion systems comprising generators, main and cargo switchboards, transformers, MV7000 converters, motors and remote control. GE is responsible for design, engineering, commissioning, training and assistance for sea and gas trials.

The decision to use dual-fuel, diesel-electric (DFDE) propulsion for the new LNG carriers marks a turning point in propulsion systems for large LNG ships built in China, where until now either steam turbines or two-stroke engine technology has been the norm. Electrical propulsion technology has lower fuel consumption and emissions. DFDE drive systems also are more compact than alternatives, enabling carriers to hold more cargo.

Bowtech System to Monitor Chain Stoppers for BP Quad 204
Bowtech Products Ltd. (Aberdeen, Scotland) delivered a £100,000 Chain Stopper Monitoring System to SBM Offshore (Schiedam, Netherlands) to monitor the chain stoppers during installation of the BP Exploration Operating Co. Ltd. (Abu Dhabi, United Arab Emirates) Quad 204 Turret Mooring System (TMS).

The new system will allow visual monitoring of each chain stopper ratchet, when the chains are being tensioned during the installation phase of the TMS. There are a total of 20 chain stoppers that require monitoring during this phase, located on the chaintable, on the lower turret, around 15 meters depth.

The scope of supply for the subsea system includes high-resolution, high- sensitivity monochrome cameras, together with LED lights (for use during poor ambient conditions), which will be installed onto the I-tubes, located above the chain stoppers, allowing downward viewing of the installation operations.

For the topside system, the scope includes a video inspection and control system, for viewing and controlling the cameras and LED lights. Bowtech also supplied all the associated cables, connectors and brackets.

PGS Acquires Data to Assess Areas Offshore Greece
Petroleum Geo-Services ASA (PGS), based in Lysaker, Norway, has acquired 2D MultiClient data in western and southern offshore Greece for the Hellenic Republic Ministry of Environment, Energy and Climate Change, and the first fast-track data sets are now available.

The area has been overlooked until recently, but it is the subject of the upcoming licensing round and shows great potential.

The objectives of the acquisition program are to improve understanding of regional structure and depositional basins and identify petroleum systems in advance of the license round in Greece, scheduled for mid-2014. The program comprised 12,500 kilometers of new data acquisition using GeoStreamer GS, an acquisition technology that removes both receiver and source ghosts. Data available also include 6,000 line kilometer vintage data reprocessing that will be combined into a regional interpretation.

The processing is ongoing and is estimated to complete in December 2013/January 2014.

All Coast Completes Acquisition of Hercules Liftboats
All Coast LLC (Lafayette, Louisiana), a newly formed company for the marine services industry, completed the acquisition of Hercules Offshore Inc.ís (Houston, Texas) domestic liftboat assets. This $57.5 million acquisition includes 29 actively marketed liftboats ranging from class 105 to class 229, 10 inactive liftboats and additional related assets.

Aubin Launches New Division Due to Industry Demand
Aubin Ltd. (Ellon, Scotland) has launched a new integrity management and subsea division in response to demand from the oil and gas industry. The division will provide solutions to urgent challenges facing operators of aging offshore infrastructure both in the U.K. Continental Shelf and internationally, as well as permanent fixes.

Aubin recently helped resolve one operatorís major integrity issue in the leg of a North Sea platform by adapting its L gel technology to create an internal pipework sealant on an asset in record time, enabling repair intervention following a serious breach in integrity. It is also working with another operator to seal a breach in the external sheath of a riser in West Africa in an operation using a diver to apply its newly introduced sealant product, AXI-cast.

The new capabilities work alongside the companyís patented range of subsea chemical solutions, which have focused on buoyancy as well as pipeline cleaning and repair.


-back to top-

Sea Technology is read worldwide in more than 110 countries by management, engineers, scientists and technical personnel working in industry, government and educational research institutions. Readers are involved with oceanographic research, fisheries management, offshore oil and gas exploration and production, undersea defense including antisubmarine warfare, ocean mining and commercial diving.