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

Legal

New Company Takes Over OW Tanker

OW Tanker, a unit of bankrupt OW Bunker and owner of its marine fuel supply ships, has been taken over by a newly-created company, the fleet manager told Reuters on Wednesday.

WRRDA: Clearing the Channel for P3 Projects

A Creative Combination for Financing Inland Waterways Infrastructure Earlier this year, the U.S. maritime industry in general, and the inland waterways industry in particular,

EU: Ships Will Measure CO2 Emissions

Shippers to begin monitoring from 2018; Environmental groups say law is weak, shippers favorable. The shipping sector will for the first time have to monitor

Offshore

Fourth Rig Delivered to Perforadora Central

Keppel AmFELS LLC, a wholly owned US subsidiary of Keppel Offshore & Marine Ltd (Keppel O&M), has delivered the jackup rig, Coatzacoalcos, to Mexico’s Central Panuco S.

Woodside to Pick up Moroccan Acreage

Woodside advises that it has entered into a contract for an exclusive Reconnaissance Licence (RL) with the Office National des Hydrocarbures et des Mines, the

Strategy Can Maximize UKCS potential

Companies operating in the North Sea require a cultural shift to make the most of the its potential, according to a new report from Deloitte, the business advisory firm.

 
 
Maritime Careers / Shipboard Positions Maritime Contracts Navigation Offshore Oil Pipelines Salvage Ship Repair Ship Simulators Shipbuilding / Vessel Construction 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: 0.2177 sec (5 req/sec)