MENA-SR-159 (MIDDLE EAST)
CHALLENGE
The producing and injecting wells in the client’s offshore field experience severe calcium carbonate (CaCO3) scaling during operation, affecting the functionality of the sub-surface safety valves (SSSV). The client’s usual method of treatment was spotting acid using coiled tubing. The client was looking for a solution that would reduce costs, footprint, and time, while also improving the intervention's success rate. The SSSV issues ranged from immobile flow tubes to flapper valves stuck open or stuck closed. Based on Blue Spark’s success in clearing scale across SSSVs in other regions, the customer decided to mobilize BLUESPARK® for the multi-well project.
SOLUTION
Remove scale from SSSV to restore functionality using electro-hydraulic pulsing technology.
When possible, a pre-treatment camera was run to evaluate the extent of scale
The BLUESPARK® 275 tool was run on third-party E-Line to the treatment interval of each well
Two pulsing passes were made over an interval of 12 to 20 ft, delivering 3000 pulses in an average operating time of 12.4 hours
Another camera run was made to determine the effectiveness of the treatment
The functionality of the flapper valve was tested, including an inflow test
CONDITIONS
Offshore
Depth: 1780 – 3000 ft
Temperature: 30-50 °C
Deviation: up to 50 °
Tubulars: 4.5 – 7 inch
OUTCOME
A total of 10 wells had the SSSV treated, consisting of 7 producers and 3 injectors
The SSSVs of 9 of the wells showed improved functionality and passed the inflow test
Images from the camera showed cleaning of the surfaces treated (example images at right)
The client was extremely pleased with the efficiency & outcome of the operation and the value provided by the treatment method. The client continues to add more wells to the project.
Before & After BLUESPARK® -Treatment Above Flow Tube
Before & After BLUESPARK® -Treatment of Flow Tube & Flapper
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.
