Offshore installation operations in Arctic waters Igor Kopsov, Region Manger SURF Russia and Kazakhstan
Table of contents 1. Offshore operations in remote and harsh environment Snow White (Norway) 2. Offshore operations in ice Sakhalin II 2 Footer can be customized
Offshore operations in remote and harsh environment Snow White (Norway) 5 Footer can be customized
Technip Offshore Norge - Snøhvit Experience EPCI Contract for Statoil Tie-back of Subsea Wells to LNG Plant Water Depth : 18 to 445 m Scope of Work Construction and Installation of : 20km 14 13% Cr infield lines 150km 8 CO2 line 300km 4 MEG / Service lines 160km main umbilical 50km infield umbilicals and cables In-field installation work 6
7 It s a beautiful place far, far away
8 and its beauty can be misleading
Snøhvit Main Challenges Far north Long / many transits Solution: construction of the special pipeline transportation barge Logistics 160 reels of coiled tubing etc. Solution: Careful planning and management of change Far north Weather uncertainties; Polar Lows, less statistics available Solution: Allowing for quick abandonment of operations Longest umbilical ever installed (approx. 150 km) Weather unrestricted Solution: development of special standby methods insuring product safety in up to 10 year storm conditions 9
Challenge : Snøhvit flowline transportation logistics Very long distance from pipeline fabrication site in Orkanger to Snøhvit field Very large scope of transportation, long flowlines >450 km of 4 / 8 / 16 Excessive transit times for pipelay vessel Apache Solution Barge mounted horizontal reels Efficient flowline fabrication Result more than 90 days of pipelay vessel saved Snøhvit Orkanger Oslo 10
Snøhvit flowline transportation logistics HORIZONTAL REEL CONCEPT Objectives : to save Pipelay Vessel transit time to allow pipeline fabrication to take place at existing facility Capacity of each reel : 3200 T of product ~150 km of 4 rigid pipe ~45 km of 8 rigid pipe 2 reels mobilised on standard 92 x 30m barge Introduction of new pipeline transportation scheme allowed Technip to win the tender 11
Snøhvit implementation of plans Change of plans 8 CO2 flowline Due to Apache delays and clashes with other projects the installation of the 8 line was subcontracted to Subsea7 with pipelay vessel Skandi Navica Change of vessel trip program Pipeline load out site moved from Hammerfest to Tromsø 4 MEG / Service lines Due to late delivery of 4 coiled tubing and unsuitable site at Hammerfest all activities were moved from Hammerfest and Orkanger to Tromsø New fabrication line including welding stations, NDE, coating, straightener was established in Tromsø Loadout to barge and from barge to lay vessel performed in Tromsø Ability to mange the change and adjust the plans insured successful completion of the project 13
Offshore operations in ice regions Sakhalin II 20 Footer can be customized
21 Sakhalin II
Project case - Sakhalin II subsea operations Sakhalin II 1999 SALM subsea flowline repair Molikpaq and 100yr wave Repair Yamashiro Pipe Lay Barge in storm 22 Title of presentation in Header and Footer 22
Project case - Sakhalin II Winter season operations Constructor diving work 23 Title of presentation in Header and Footer 23
Getting there - vessel Vessel Transit CSO Constructor Mobilized out of Galveston,Texas,USA Sailed south through Panama Canal Sailed across the Pacific to Wakanii, North of Japan.(Dive crew joined vessel) Sailed to Yuzhno-Sakhalinsk to clear customs Sailed to Pilton-Astokhskoye field in Sea of Okhotsk 35 days Total 25
Getting there - personnel Personal Travel Flight Paris Tokyo Overnight Tokyo Flight Tokyo Hokkaido (North Japan) Flight Hokkaido- Yuzhno-Sakhalinsk Overnight Stay in Yuzhno-Sakhalinsk Fast train (14hrs) Yuzhno-Sakhalinsk Nogaliki (North Sakhalin) Two days stay in Nogaliki due to fog offshore Flight back to Yuzhno-Sakhalinsk to catch supply boat to Vessel (bad weather in harbour) Another overnight stay in Yuzhno-Sakhalinsk Flight back to Nogiliki Flight out to Molikpaq Basket transfer to CSO Constructor Total 7 Days 26
27 Sakhalin diving operations in ice
Arctic on ice 28 Footer can be customized
Subsea projects Non-engineering challenges Year 2013 Suppliers Difference in business cultures Contract discipline Legal framework Complicated custom rules Complex taxation system Logistics Additional certification Personnel boarder crossing Remoteness Lack of support infrastructure 29
Subsea projects Non-engineering challenges Year 2016 Low oil Politics price 30
Thank you Technip at Sakhalin Technip in Norway www.technip.com