OVERVIEW

Fast, autonomous motor stall detection to help reduce damage and the potential of equipment being stranded downhole.

  • Reduce pumps

  • Reduce trapped torque

  • Pick up off bottom

  • Driller enters maximum operating and stall differential pressure from the motor manufacturer for rotary and slide drilling.

  • Control system monitors the differential pressure based on the performance limits entered above and the rate of change in differential pressure to determine when a stall has likely occured.

SEQUENCE USED FOR REACTING TO & MITIGATING A STALL

1. Rotation or oscillation is stopped

2. Autodriller is switched off

3. Pumps are stopped or reduced depending on configuration

4. Surface torque is unwound

5. Drillstring is picked up off bottom

6. Flow is re-established

7. Rotation is re-established

What Drilling Outcome Do You Want to Achieve?

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