Statoil/Technip approached Proserv Norge in the summer of 2014 in order to allocate potential solutions to support their upcoming tie-in at the Valemon/Huldra field. The scope consisted of diamond wire cutting, abrasive cutting, ROV and electric dredging and coating removal.
A total of 4 rough cuts were performed utilising the diamond wire saw with deployment frame. The cutting time was 42 minutes per cut. The diamond wire saw was powered via ROV, utilising Proserv’s hot stab setup and dirty pack which ensured optimal efficiency.
Proserv personnel also executed the final cut, utilising the abrasive cutting manipulator installed on the pipeline cutting removal (PCR) tool. The final cut was crucial, with a skew tolerance of only 9.8mm and the continuation of the campaign for the installment of the moor grip depended upon the success of the cut.
All relevant tooling was mobilised and lifted onboard the Skandi Arctic vessel within the given schedule. Proserv supplied a completely redundant tooling package which minimised the risk for operational downtime. A competent crew of 6+1 was mobilised for the job in Stavanger, along with the equipment, and ensured the job was completed whilst ensuring the fulfilment of Proserv values and QHSE requirements. Proserv’s experienced personnel were cross-utilised on all operations, eliminating the need for several 3rd party suppliers, reducing cost, freeing bed space and saving time.