The ADS (automatic drilling system) utilizes the control capabilities of a
PLC with an integrated HMI screen. The result is a powerful system which
is both safe and easily operated.
ADS controls the drilling tool speed and location based on input from an
encoder coupled to the drawworks. Input from a dead line transducer is
used to control and monitor speed of the motor and weight on bit. Input
from a mud pressure transducer can be used to control the mud motor
pressure delta parameters.
The ADS control functions include: weight on bit, rate of drilling and mud
motor pressure delta. The system includes dual limits for alarm and shut
down which operate independently of the function control set points.