Hallin Supports McDermott in Malaysia Hallin Marine is mobilizing a new Saturation Diving System, crew and divers onto the J. Ray McDermott Pipelay and Derrick Barge DB26 that will be performing pipeline construction work offshore East Malaysia for Sarawak Shell Berhad, part of the Royal Dutch Shell Group. This activity is part of the 2007 McDermott field development campaign works for Shell's Malaysian arm. With Subsea diving assistance from Hallin, McDermott will be completing installation of offshore platforms and interconnecting subsea pipelines. The primary focus of Hallin's workscope is to provide the Saturation Diving System and specialist construction diving personnel to support the subsea construction activities in water depths to 100m. The system Hallin is mobilizing is its latest new build Saturation Diving System Sat 05 for the McDermott works. The construction of the system was completed at Hallin's yard in Singapore in February this year. Built to ABS Class, Sat 05 is a 12 man saturation system with a 3 man bell, Gas Reclaim and Hyperbaric Rescue Chamber. Barbados to Launch Offshore Exploration Barbados' energy and environment ministry plans to launch the country's offshore oil and gas exploration bidding round on June 1, a ministry official told BNamericas. The launch will take place in the capital, Bridgetown with a subsequent presentation in Houston, Texas, on June 8. Bidding round draft terms along with technical details are due to be released July 2 and a clarification session has been scheduled for July 23. The government aims to publish bidding rules September 3 with offers to be submitted October-November, said the official, adding the goal is to award contracts end-December. There is no offshore exploration and production in Barbados. Currently the Barbados National Oil Company (BNOC) produces upward of 1,000b/d from onshore fields. BNOC sends the crude to Trinidad & Tobago to be refined, after which it is brought back to Barbados. The 1,000b/d represents roughly 15% of Barbados' fuel requirement, with the remainder imported. (Source: www.bnamericas.com) OSIL Wins Shell H-Block Exploration Contract OSIL (Ocean Scientific International Ltd.) secured a contract in conjunction with GEMS Survey Ltd. to install advanced subsea monitoring equipment off the coast of Nigeria in H Block for Shell. Working with GEMS Survey Ltd who is providing all field services, OSIL will supply three fully instrumented AL200 Flotec Subsea ADCP Mounts. These will be fitted with Nortek AWACs, which are ideal for providing current profiles and measuring wave data in a single, compact unit. The Nortek AWAC is specially designed for coastal monitoring, being small and rugged to withstand tough high fouling environments. The subsea monitoring system will form the backbone of a12-month metocean study within H Block. The GEMS/OSIL collaboration provides Shell with two levels of expertise and experience. Drawing on its strong history in the oil and gas sector supplying major corporations like BP and Total, OSIL has selected the optimum robust metocean equipment to suit the geographic location and project requirements. Ashtead Technology, CodaOctopus Help to Solve BP's FPSO Positioning Problem Faced with the problem of a failed, obsolete GPS system on Schiehallion FPSO, BP recently chose the Octopus F180+ TM Precision Attitude and Positioning System. Located in the north east Atlantic Ocean, approximately 140km to the west of the Orkney Islands, UK, the vessel normally relies on conventional GPS to measure the position of the turret towards the bow. With up to 24 oil- and gas-carrying flexible risers connecting the FPSO to the sea-bed www.seadiscovery.com well-heads, it is imperative that the position of the turret, to which the risers are attached, is accurately known and maintained at all times. Mounted at a remote, safe location near the bridge, some 160m back from the turret, the F180's in-built lever-arm facility uses precision position and attitude information to calculate the position and motion at the remote position. Unlike conventional installations for hydrographic purposes, the location of this F180 unit meant that it was impossible to calibrate it by sailing in figures of eight, so a custom pre-calibrated mounting was devised. Built into a single weather-proof housing, the twin antennas and inertial sensors are colocated and calibrated prior to being installed on the vessel. This novel approach along with the F180's precision performance enabled the whole system to be quickly bolted to an existing structure and was up and running within 15 minutes. Marine Technology Reporter 45
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