Seaway Falcon Performs Deepest Pipelay

Friday, April 05, 2002
Stolt Offshore in Houston has successfully completed a deepwater subsea to subsea installation, including one flowline and one umbilical, for Shell's single well Einset project in the Gulf of Mexico, reports Bjorn Koi, Stolt's project manager. "Subsea to subsea installations are 'rare' in the industry but may become more prevalent as we move into deeper waters. To date, most subsea tie-backs have been supported by host platforms in shallower water. "In the case of Einset, we tied back a new deepwater well to existing subsea infrastructure, also located in deepwater. This achievement demonstrates how the industry is applying proven technology while effectively utilizing deepwater construction vessels, such as Stolt's Seaway Falcon," said Koi. He added that the "Seaway Falcon" multipurpose vessel achieved its deepest pipelay to date, with the Shell Einset well located in 3,463 ft. of water on Viosca Knoll Block 872. The Stolt crew completed the umbilical and flowline installation project in a single mobilization, using a J-lay installation method. The project scope included the setting of two long base line (LBL) arrays-a collection of acoustic beacons or transponders-to ensure the accurate installation of two Shell-supplied pipeline end manifolds (PLEMs) at each end of the six-inch flowline; i.e., one at the Einset well and one at the SE Tahoe 1 well. The two pipeline jumpers, installed by others, connected the PLEMs to the wells. Stolt's "Seaway Rover" ROV (remotely operated vehicle) support and survey vessel completed the LBL arrays, installing six transponders at Einset and eight transponders at SE Tahoe 1 in advance of the flowline installation work. "The accuracy rate in using the LBL array is very high. We hit our target boxes for installing the PLEMs with excellent precision due to the good work of the 'Seaway Falcon,'" said Koi. The PLEMs themselves represented a challenge as well, says Koi, explaining that Stolt designed and fabricated a purpose-built PLEM handling frame to accommodate their size and facilitate installation. Each PLEM was approximately 25 feet tall, with the PLEM installed at Einset weighing 24 metric tons and the PLEM at for the SE Tahoe location weighing 18 metric tons.
Maritime Reporter September 2014 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

Legal

NAO Announces Financials, Declares Dividend

Nordic American Offshore Ltd. has declared a dividend of $0.45 per share for 3Q2014, as previously announced. This is the same dividend as for the previous two quarters.

Kirby Corp. Announces Record 3Q Results

Record 2014 third quarter earnings per share of $1.34 compared with $1.21 in the 2013 third quarter, which included a $0.08 benefit due to the reduction of the United earnout liability.

Danny Broad Appointed to ARENA Board

The Chair, Board members and staff of the Australian Renewable Energy Agency (ARENA) are delighted to advise that Danny Broad has been appointed by the Australian Government to the Board of ARENA.

Offshore

Partners Deliver Modular Floating Tidal Energy Platform

A group of offshore companies, including Bluewater, Damen and Van Oord among others, has partnered for a floating tidal energy platform a project to generate clean electricity,

Statoil Invests $1.5b in US Offshore Project

Statoil together with co-owners in the Stampede development in the Gulf of Mexicohas sanctioned the Stampede project in the U.S. Gulf of Mexico. Statoil said it will invest $1.

Experimental Floating Wind Farm Nears Installation

Launched in March 2012, the Fukushima experimental offshore floating wind farm project sponsored by the Ministry of Economy, Trade and Industry is nearing the installation

 
 
Maritime Careers / Shipboard Positions Maritime Standards Naval Architecture Navigation Offshore Oil Pipelines Pod Propulsion Salvage Shipbuilding / Vessel Construction Winch
rss | archive | history | articles | privacy | terms and conditions | contributors | top maritime news | about us | copyright | maritime magazines
maritime security news | shipbuilding news | maritime industry | shipping news | maritime reporting | workboats news | ship design | maritime business

Time taken: 0.1143 sec (9 req/sec)