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 August 2014 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

Legal

Too Many Passengers Lands Ferry Company in Court

Carrying numbers of passengers, including schoolchildren, far in excess of its license, has cost representatives of a Hampshire ferry company fines and costs totaling £12,340.

Barge Operator Fined for Releasing Dangerous Gas

The operator of a Portsmouth-based barge has today been made to pay almost £111,000 in fines and costs after pleading guilty to a breach of maritime legislation.

House Introduces Vessel Discharge Legislation

The American Waterways Operators, a 350-member trade association representing the U.S. tugboat, towboat and barge industry, hailed the House introduction of critical

Offshore

Hyde Guardian BWTS for Edison Chouest Fleet

Hyde Marine, Inc., a wholly owned subsidiary of Calgon Carbon Corporation, has been selected as a strategic supply partner for ballast water treatment (BWT) systems

Rosneft, ExxonMobil Continue Drilling for Now

Russia's Rosneft and U.S. ExxonMobil are continuing to drill in the Kara Sea and plan to stop work by Oct. 10, Russian Deputy Energy Minister Kirill Molodtsov said on Tuesday.

Aberdeen Harbour Installs Siklu Security Network

Aberdeen Harbour has extended its security solutions coverage using high-capacity backhaul from Siklu, the market leader in millimeter wave backhaul informs the Israel-based tech firm.

 
 
Maritime Security Maritime Standards Naval Architecture Navigation Pipelines Pod Propulsion Salvage Ship Electronics Ship Repair Sonar
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: 0.2276 sec (4 req/sec)