Offshore staff
ABERDEEN, UK – Maritime Developments (MDL) has transpooled 64 km (40 mi) of MEG coiled tubing ahead of offshore missions for Ocean Installer and DeepOcean.
The operation involved transpooling MEG injection lines from 28 Tenaris transportation reels onto seven client-supplied offshore installation reels for two separate subsea installation projects, using an MDL flex-lay spread.
MDL’s role included: project engineering, scheduling, transpooling procedures, task plans, mob/demob procedures, straightener testing, reeling verifications, back tension for spooling calculations, straightening analysis, general equipment list, data sheets and general arrangements, transpooling equipment setup/layout, lift plans, and supply of HAZID/HAZOP and marine personnel for onsite execution.
The transpooling spread was a reel drive system for handling the installation reels, a 150-metric ton (165-ton) reel drive system for the transportation reels, two 2-track pipelay tensioners to ensure controlled constant tension, a pipe straightener, deck deflectors, roller assemblies, and winches.
Client-contracted welding, NDT and field joint coating equipment and services allowed MDL to optimize the equipment layout to provide tie-in weld services.
MDL tensioners also provided control for tie-in welding in the firing line.
Prior to the operation in Norway, the company had performed straightening trials at its facility in Scotland using the transpooling tensioners, pipe straightener, and a product sample.
Steven Morrison, MDL project engineering manager, said: “Even though the products were destined for two different fields, our clients worked together to deliver a single transpooling campaign.
“Effectively that meant a 100% cost saving on project engineering, mobilization costs, equipment rental and personnel rates, compared to carrying out two separate transpooling campaigns.”
05/19/2020
