Hydraflow Advanced Wellbore Cleaning System (HAWCS)

The Hydraflow Advanced Wellbore Cleaning System (HAWCS) combines jetting action with flow-rate boost effect to maximize riser cleaning efficiency.


  • Jetting Sleeve with 9 x offset Jetting Nozzles arranged to jet the riser wall and also to penetrate into the BOP cavities to jet and clean
  • 9 x upward angled Jetting Nozzles arranged on the body help to reintroduce jetted debris into the flow path and be carried upwards to surface
  • Optional integral pup joint for fast handling
  • Optional lower bull nose or pin down connection to suit various applications


  • Cost Savings
    • Maximizing riser cleaning efficiency to reduce operating time and costs on expensive semi-submersibles
    • No field maintenance required
  • Integrity
    • Available with high torque connections minimizing the need for reduced strength crossovers
    • Single piece mandrel with no internal connections for increased strength
  • Reducing Non-Productive Time
    • Reduces premature failure of completion equipment by debris which can interfere or damage valves, electronics and other hardware


  • Deep water pre-completion wellbore clean-ups from semi-submersible drilling units
  • Riser cleaning during displacement to sea water before disconnection or moving from location


  • The Hydraflow Advanced Wellbore Cleaning System is typically run in conjunction with the Riser Cleaning Tool and XTractRâ„¢ BOP Junk Catcher or as a standalone tool
  • While jetting in the hole, the Jetting Sleeve washes the riser wall. The staggered jetting nozzles allows full coverage without the need to rotate
  • Best practice recommends to function the rams and annular to help dislodge debris before jetting the BOP stack at 35 BPM while rotating slowly, making 3 passes
  • It is also recommended to reduce jetting not lower than 20 BPM while passing the annular preventor
  • Hydraflow can also be run with a wear bushing retrieval tool below
  • The upward angled Jetting Nozzles assist in carrying debris to surface through inducement of turbulent flow