NSEA-SR-123 (North Sea)
CHALLENGE
During a routine test, a major operator determined that a Sub-Surface Safety Valve (SSSV) would not successfully perform a routine inflow pressure test due to calcium carbonate scale (CaCO3).
Two separate interventions were attempted using conventional chemical and mechanical methods, but these failed to re-activate the SSSV. The operator then decided to mobilise BLUESPARK® technology, with its ability to remove scale from complex downhole completion equipment items, without risking any damage to them.
SOLUTION
Return a critical barrier to an oil producer in the Danish sector of the North Sea using electro-hydraulic pulsing technology.
BLUESPARK® service was mobilised at short notice and run on third party wireline.
Service required no chemicals, explosives or controlled goods.
3m (10feet) interval across the SSSV was treated with BLUESPARK®, removing the CaCO3 scale.
Total operating time was less than 24 hours.
SSSV was success fully activated and in flow pressure tested.
Well was handed back to Production.
CONDITIONS
Offshore Platform
Wireline Deployment
Depth: (564 m) 1,850 feet
Temp: 42°C (108 °F)
OUTCOME
Blue Spark Energy successfully performed its first Sub-Surface Safety Valve (SSSV) re-activation in the Danish North Sea using our innovative BLUESPARK® technology.
Demonstrated ability to selectively remove scale over sections of the tubing, verified by Caliper logs.
Effective for NUI (normally unmanned installations) with small footprints and challenging lifting restrictions.
Well returned to fully compliant integrity status, without the requirement for a workover.
Blue Spark Energy is paving the way towards a sustainable, dynamic oil & gas industry. As leaders in high-pulse powered wellbore remediations, we provide a revolutionary technology that is a safe, cost-effective, and efficient solution for forward-thinking energy providers.
