Customer challenges
- This was the first decommissioning project in Ireland with the campaign requiring the abandonment of nine subsea wells, utilizing an anchored semi-submersible offshore drilling unit
- The customer had a requirement for a throughBOP intervention riser system, complete with topside direct-hydraulic control system, to provide well barrier isolation and disconnect capability during a subsea well abandonment campaign in the challenging environment of the Celtic sea
Expro Excellence
- Expro provided both a primary and back up 7-3/8” ELSA-DH SSTTA c/w offshore service personnel as well as project management, interface engineering services personnel to deliver the customer’s scope of work
- The primary and secondary 7-3/8” ELSA-DH SSTTA systems performed three operations each, with maintenance performed on the primary system to complete the final wells
- Maintenance was carried out on the primary system whilst the secondary system was utilized allowing the rig time to be optimized between operations
- The system was unlatched at the subsea test tree for over 93 hours due to the weather conditions and relatched with no issues, proving system reliability
- Safety was the key priority in delivering fit for purpose equipment and carrying out the customer’s work scope
Value to client
- The nine well campaign was executed successfully, with over 1,290 in hole hours with zero NPT, during COVID-19 pandemic
- The client commended Expro’s performance when evaluating our service quality, equipment performance, QHSE, communication, and proactive personnel
- The equipment was delivered on schedule with a short planning time from Expro’s global subsea support hub in Aberdeen
- Expro provided a cost-effective fit for purpose solution for the customer, based on the well parameters and challenging harsh condition
