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

Legal

Seized Hanjin Shipping Vessel Resumes Operation in South Africa

Hanjin Paradip resume  its sailing from South Africa as talks continue with owner over unpaid charter fees. The ship had been detained in Richards Bay, South Africa

Korean Shipbuilder Could Be Liquidated

South Korea's STX Offshore & Shipbuilding Co. has filed for receivership, following massive losses that have mounted up over the past two years, says a report in the WSJ.

Portugal PM Warns Lisbon Dock Workers to End Strike

Portugal's prime minister warned Lisbon dock workers on Friday that his patience was running out after a strike that has lasted a month, paralysing the city's ports.

Offshore

Mermaid Maritime Bags Subsea Contracts, Delays Newbuilding

Thailand’s Mermaid Maritime said it has been awarded a number of subsea contracts in the Middle East with a total worth of $11million.   It has also reached

Hercules Offshore Filing for Bankruptcy Again

Hercules Offshore Inc said it planned to file for prepackaged Chapter 11 bankruptcy, just six months after the rig contractor emerged from bankruptcy protection.

DONG Energy Listing to Value Group at up to $16 Bln

DONG Energy's has set a potential $16 billion price tag on its stock market debut, giving investors a chance to buy into the growth in offshore wind power, but

 
 
Maritime Careers / Shipboard Positions Maritime Security Naval Architecture Pipelines Pod Propulsion Salvage Ship Electronics Ship Simulators Sonar Winch
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: 0.0867 sec (12 req/sec)