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 Today


The Maritime Industry's original and most viewed E-News Service

Maritime Reporter June 2016 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

Legal

ECDIS Related Detentions on the Rise

ClassNK has been informed by Australian Maritime Safety Authority (AMSA) that during PSC inspections it has been increasingly reported that vessels have been detained

CMA CGM Crosses 90% Ownership Threshold in NOL

Container shipper CMA CGM S.A. has crossed the 90 percent ownership threshold in Neptune Orient Lines Limited (NOL), enabling it to bring the Singapore company private.

UAE Top Court: Physical Bunkers Suppliers Have No Right to Recourse against Owners/Charterers

The OW saga - UAE Federal Supreme Court decides that physical suppliers of bunkers have no right to recourse against Owners/Charterers. In the first decision

Offshore

Norwegian Unions Say 755 O&G Workers Could Strike

About 755 Norwegian workers on seven oil and gas fields could go on strike from Saturday, hitting output from western Europe's top producer, if a new wage deal is not agreed before a Friday deadline,

POSH Bags Shell FLNG Contract

Singapore’s offshore marine services provider PACC Offshore Services Holdings Ltd. (POSH) has been awarded a contract to support Shell’s Prelude floating liquefied

US Oil Drillers Cut Rigs after 3 Weeks of Additions

U.S. oil drillers cut rigs this week for a 20th week this year after three weeks of additions, according to a closely followed report on Friday, as crude prices

 
 
Maritime Careers / Shipboard Positions Maritime Standards Naval Architecture Navigation Pipelines Pod Propulsion Ship Electronics Ship Repair Ship Simulators Sonar
rss | archive | history | articles | privacy | 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: 0.0805 sec (12 req/sec)