Navi-Drill Mach 1C
The Mach 1C is a positive-displacement motor that develops high torque at
the bit at relatively low speed ranges (80-340 rpm). This makes it ideal for
directional applications, drilling with high weight-on-bit, navigation
drilling with roller cone or large cutter PDC bits, and coring operations.
The motor has a multi-lobe (5/6) rotor/stator configuration, which
generates higher torque than the 1/2 lobe motors, permitting more weighton-
bit and increasing the drill rate. Because the motor develops its power at
low speeds, it can improve bit performance without accelerating wear on
the bearings or cones.
A unique bearing assembly and improved elastomer compounds in the
stator have increased the Mach 1C’s hydraulic horsepower and extended
operating life. It also has a new rotor nozzling system that allows the motor
to be run at 50-100% over its maximum recommended flow rate without
exceeding maximum recommended motor speed. The additional mud
passes through the motor’s rotor, and flow rate can be adjusted by
interchanging nozzles. Higher rates offer improved hole cleaning and bit
hydraulics.
Although primarily a directional performance drilling motor, the Mach 1C
can also be used for straight-hole drilling.
Tables 5-1 and 5-2 detail the Mach 1C specifications.
The Mach 1C is a positive-displacement motor that develops high torque at
the bit at relatively low speed ranges (80-340 rpm). This makes it ideal for
directional applications, drilling with high weight-on-bit, navigation
drilling with roller cone or large cutter PDC bits, and coring operations.
The motor has a multi-lobe (5/6) rotor/stator configuration, which
generates higher torque than the 1/2 lobe motors, permitting more weighton-
bit and increasing the drill rate. Because the motor develops its power at
low speeds, it can improve bit performance without accelerating wear on
the bearings or cones.
A unique bearing assembly and improved elastomer compounds in the
stator have increased the Mach 1C’s hydraulic horsepower and extended
operating life. It also has a new rotor nozzling system that allows the motor
to be run at 50-100% over its maximum recommended flow rate without
exceeding maximum recommended motor speed. The additional mud
passes through the motor’s rotor, and flow rate can be adjusted by
interchanging nozzles. Higher rates offer improved hole cleaning and bit
hydraulics.
Although primarily a directional performance drilling motor, the Mach 1C
can also be used for straight-hole drilling.
Tables 5-1 and 5-2 detail the Mach 1C specifications.
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