Concentric Coiled Tubing — DualCT®
DualCT® (Dual Coiled Tubing) technology focused on improving cleanout efficiency and data acquisition, with Jetting/Suction and Venturi (Suction) operating modes.
String configuration
Outer tubing 2-3/8” and inner tubing 1-1/4”.
Key features
- Requires lower pump pressure to achieve full cleanout effects.
- Fluid path creates a spiral vortex that agitates and removes debris from the tubular wall, supporting cleaning performance.
- Interchangeable head; can be easily replaced for different injection/replacement actions.
- Modes: Cleaning (Jetting/Suction) and Venturi (Suction).
- Hydraulically activated, avoiding extra runs and time for mode changes.
- Compact design, easy assembly/disassembly; configuration allows adding other service tools.
Tools / references
CT SpiralVenturi ToolRcakeCLEAN®Optimus DualCT Simulator®
Applications
- Well testing: with the well fully clean and CTSVTool® in Venturi (Suction) mode, the well is induced to produce.
- Well testing: enables measuring oil production by sections of interest in the well.
- Slotted liner / screens internal cleaning: solids removal.
- Slotted liner / screens internal cleaning: emulsion removal.
- Cleanouts for water or gas blockages.
- Removal of solids, carbonates, and asphaltene precipitates.
- Integrity analysis: helps determine issues in the hanger or in the slotted liner.
- Granulometric analysis to determine failures in the slotted liner (performed at Longkeda laboratory).
- Data capture: possibility of capturing P&T in memory.
- Saturation logging technology (QUAD NEUTRON) used in horizontal wells via Coiled Tubing.
Track record
Successfully completed 51 services nationwide.