bespoke decommissioning tools save time and operational
TRANSCRIPT
Bespoke decommissioning tools save time and operational costs in the Middle East
The challenge
Innovo was commissioned by multinational oilfield services company Saipem to provide demolition tools for operations in the Middle East. The team was given a tight delivery schedule to design, manufacture and supply equipment capable of dismantling oil and gas platforms operating in the Safaniya field, the largest offshore oilfield in the world.
The solution
Innovo’s engineering team designed bespoke equipment capable of reducing operating times and ensuring the cost effectiveness of the project. This included an Internal Cutting Tool (ICT) for internal platform leg cuts, customised to cut internal diameters of up to 42-in and a steel thickness of up to 8-in.
For external cuts, two Diamond Wire Cutting Tools (DWCTs) were manufactured with cutting ranges of 16-in. to 30-in. and 26-in. to 60-in. Bespoke internal and external dredging tools were also included to clear consolidated sediment from inside platform legs.
The team’s fast and efficient turnaround helped Saipem to meet the operator’s deadline
Case study
Client SaipemProject Platform decommissioningLocation Safaniya field, Middle East
Continued overleaf…
Innovo’s offshore personnel installed, supervised and operated the bespoke decommissioning tools throughout the duration of the campaign.
SAUDI ARABIA
IRAN
Safaniya
Tool design, manufacture and supply 4 months
Platforms decommissioned 9
Decommission time saved 4 weeks
UAE
QATAR
© Innovo Engineering & Construction Ltd. All rights reserved. 11952 January 2022
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Innovo is an engineering, construction and equipment rental company.
We support the renewables, communications, offshore energy, marine, and industrial & civil works industries worldwide with custom-designed and rental products including jack-up systems, modular pontoons, cable laying equipment, and engineering solutions onshore, offshore and subsea.
For more information pleasevisit innovoteam.com oremail [email protected]
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for kick-off operations. Innovo’s skilled personnel installed, supervised and operated the tools offshore, helping to complete the decommissioning campaign safely and ahead of schedule.
The result
Design, manufacture and delivery of all equipment was successfully achieved in under four months. The reliability of Innovo’s equipment reduced the length of operations. Nine platforms were decommissioned in five months, four weeks ahead of schedule.
ICT performance
Legs removed 31
Leg dimensions 36.5-in. OD (1.5-in. thick), 42-in. OD (8-in. thick)
Average cutting time 1 hour per leg
Average abrasive consumption
75 kg per cut
Number of fillings 1 per leg
DWCT (16-in. to 30-in.) performance
No. of cuts Pipe OD Cut time
4 16-in. riser pipe 30 min
6 14-in. pipeline 15 min
16 32-in. bumper bar 1.5 hours
2 20-in. boat landing 1 hour
43 16-in. bracing 25 min
DWCT (26-in. to 60-in.) performance
Cuts performed 13
Jacket leg dimensions 42-in. OD (1-in. thick)
Platform piledimensions
46.5-in. OD(1.5-in. thick)
Average cutting time 3-4 hours per leg