Mobilized in 24 hours, 4 days of rig time saved

Key results

• Efficient and Effective
• 24 hours mobilization
• Easily transported via helicopter
• 4 days of time saved

Challenge

A major operator in the Danish North Sea required a plug to be set in the upper tubing of their well. The initial set of the plug did not pass the pressure test due to CaCO3 scale in the tubing. The customer considered using an i-broach & brushes on slickline and/or jet/bead blasting on coiled-tubing to remove the scale.

However, due to the successful use of BLUESPARK® to efficiently remove scale on 30 previous wells for the customer, the delays caused by mobilizing other equipment & the probable duration of the operation, they decided to immediately mobilize BLUESPARK® instead.

• Depth: 115 m (375 ft)
• Temperature: 20 °C (68 °F)

Solution

Remove scale from the upper completion of the wellbore using electro-hydraulic pulsing technology.

• BLUESPARK® equipment mobilized in 24 hours.
• The BLUESPARK® 275 tool was transported by helicopter (including a complete backup set of tools) in a single flight to the rig (no special permitting required as there is no HAZMAT).
• A 7.5 m (25 ft) interval was treated in an operating time of 6.25 hours.

Outcome

• Blue Spark Energy, the Wireline provider, and the client’s teams were able to load out the equipment and personnel in one day.
• The modular, compact design of BLUESPARK® allowed the entire kit (with backups) to be flown in one helicopter trip.
• BLUESPARK® cleaned the scale from the tubing section and tubing hanger, resulting in a successful plug set and test.
• 4 days of rig time and considerable cost were saved.

“Great teamwork by all at TEPDK, Altus and Blue Spark to get the personnel mobilized to Denmark and the BLUESPARK® tool loaded to the rig out in such a short timeframe. Flying this tool out via chopper allowed operations to continue without extensive delays and the WASP® tool solved an issue that could have otherwise taken up to 4 days longer to solve. BLUESPARK® is an indispensable tool in our scale remediation package – we have great confidence that it can efficiently and effectively solve any scale issues we encounter. Thanks for your help. I look forward to working with you guys again”.”

Decommissioning Engineer, Total Denmark