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 July 2015 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

Legal

Missing Person Rescued Near Brackettville

On July 31, Border Patrol Search Trauma and Rescue (BORSTAR) agents and CBP Office of Air and Marine rescued a man who was reported missing the previous morning.

Ross is Fleet Manager, Heidmar

Heidmar announced the promotion of Duncan Ross to Fleet Manager. Duncan joined Heidmar’s London office in 2012 as vessel manager.  Prior to joining Heidmar,

LR First to Certify Small Caribbean Ships

LR is the first class society to certify small commercial ships operating in the Caribbean After becoming the first classification society to issue Cargo

Offshore

Fratelli Neri Orders Damen Tug

One of the largest Italian tug owners, Fratelli Neri S.p.A, ordered its first Damen tug, an ASD 3212, on 21 July 2015.   The vessel will be the first ASD tug

NOIA Applauds Senate Passage of OPENS Act

NOIA President Randall Luthi issued the following statement on the Senate Energy and Natural Resources Committee’s passage of the OPENS Act, which will open new

Shell Moves Ahead in Arctic with Exploratory Well

Shell Oil's icebreaker MSV Fennica weaved through nine remaining protesters hanging from the St. Johns Bridge and made its way toward the Pacific Ocean.   Authorities

 
 
Maritime Careers / Shipboard Positions Maritime Contracts Maritime Security Maritime Standards Navigation Port Authority Salvage 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: 0.2025 sec (5 req/sec)