NSEA-SR-120 (North Sea)
CHALLENGE
One of the biggest challenges faced by oil and gas operators is the formation of scale which inhibits flow in the near wellbore, perforations, tubulars, downhole control systems and surface equipment.
Barium sulfate (BaSO4) scale is a particularly challenging type of hard scale, as it is highly resistant to conventional chemical and mechanical remedial techniques.
An operator in the North Sea suspected that a large section of sand screen across a productive zone was plugged by barium sulfate scale. However, the relatively low production rate, coupled with a small, unmanned production platform, precluded most other intervention solutions.
SOLUTION
Use electro-hydraulic stimulation to extend the economic life of a well on the Norwegian continental shelf.
Upon consultation with Blue Spark Energy, the operator decided to improve communication with the reservoir by treating the sand screen with BLUESPARK® technology.
A secondary objective was to clean a section of perforated liner.
Both treatments were accomplished in the same run in the hole.
Production after the treatment was monitored for rate and pressure.
CONDITIONS
Depth: 3400 mKB (11155 ft.)
Deviation: 86 degrees
Temperature: 120 °C (248 °F)
OUTCOME
Post BLUESPARK®, oil production increased 173% from 91.8 b/d to 250.9 b/d.
Well uptime increased from 11.8% to 67.8%.
Improved production was sustained for more than 6 months following treatment.
The operator elected to maintain the well as a producer, now that its production rate was economical.
Confirmed effectiveness of BLUESPARK® to remove BaSO4 scale from completion equipment. Client is looking for additional candidates to apply BLUESPARK®.
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.
