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 Adopting
advanced full numerical AC VFD technology, intellectual drilling
control is accomplished through PLC, touch screen and integrated
design of air, electric, hydraulic parts and drilling
instrumentation. Large power and wide frequency motors are used for
complete range speed setting of drawworks, rotary table and mud
pumps. Single shaft, gear drive and one shift smooth speed change
drawworks is simple in structure and reliable in operation .Compound
hydraulic disc brake and dynamic braking are used for braking
system.
Automatic drilling is obtained by drawworks main motor or an
independent motor. Real time supervision and control for tripping
in, tripping out and drilling operation are obtained.
Intellectual soft starting device, ET200 or ASI module is used for
protection and supervision to MCC system. Intellectual position
control for traveling block to prevent top and low collision is
provided.
Protective functions to air or hydraulic loss, electric control
system or motor trouble, limit for rotary torque and pump
pressure is available.
A
separate driller cabin is fitted. Operations for air, electric and
hydraulic, drilling data and
 parameters
are all in the cabin. Logic control, supervision and maintenance
during complete drilling operations are available by PLC processes.
The drilling data can be stored, printed and remote transmitted. All
operations by driller can be completed in the cabin for better
working conditions and less working strength.
Top
drive drilling system can be equipped.
Integrated skid rail may be provided to meet requirements for
cluster well drilling.
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