Debris, scale, and obstructions limit production and intervention success. Traditional cleanout methods require stopping operations or increasing differential pressure to switch between milling and circulation.
These interruptions increase time, fluid use, and cost—especially in long or complex wells.
The ExaCT cleanout service, part of the ExaCT™ electrical downhole CT control system, replaces pressure-based mode switching with on-command electrical control. Operators switch between milling and circulation without stopping pumps or interrupting the CT cleanout workflow, helping remove debris, scale, and obstructions in demanding wells.
Continuous downhole telemetry provides visibility into changing well conditions while the multicycle system for actuated response (MSAR) switches modes on command. This active control maintains pumping, supports extended run time, and enables real-time solids detection and flow diversion without relying on pressure cycling.
For long, depleted, or technically challenging wells, condition-based cleanout helps reduce intervention time and fluid use. In early deployments of the ExaCT cleanout service, the workflow finished about 30% faster than similar wells, saving approximately 12 hours. It also used about 20% less liquid and nitrogen than fixed, depth-based CT cleanout programs while restoring full well access and production.
Adjust downhole operation instantly.
Switch modes without stopping the job.
Optimize cleanout execution.
Support long-duration operations.
Maintain efficiency in challenging wells.
Flow diversion enables real-time solids detection and control.
Real-time electrical mode switching reduced liquid and nitrogen consumption by about 20% compared with fixed, depth-based CT cleanout programs offshore.
Condition-based CT cleanout finished about 30% faster than similar offshore wells, saving approximately 12 hours of intervention time in Norway.
The MSAR switches between milling and circulation on command while maintaining continuous pumping during cleanout operations.
The condition-based cleanout workflow removed chalk blockages, reached total depth, restored full well access, and returned the offshore well to production.
Talk to an SLB well intervention expert about deploying the ExaCT cleanout service to switch between milling and circulation on command, reduce fluid use, and maintain continuous pumping in challenging wells.
Conventional CT cleanout often uses hydraulic activation or pressure cycling to switch between milling and circulation, which can interrupt operations. The MSAR tool in the ExaCT cleanout service switches modes electrically on command without stopping pumps.
Yes. The MSAR tool switches between milling and circulation on command while maintaining continuous pumping, including in nitrogen-assisted environments.
In an Aker BP deployment offshore Norway, the condition-based workflow finished about 30% faster than similar wells, saving approximately 12 hours of offshore intervention time.
Chalk, scale, and other debris can accumulate in mature and depleted wells. Low reservoir pressure and extended horizontal sections can increase fluid-loss risk and limit the effectiveness of fixed cleanout programs.
The ExaCT cleanout service is part of the ExaCT system. It combines real-time downhole measurements with the MSAR tool to switch between milling and circulation without interrupting the workflow.
