Mud motor assembly
First Claim
1. A method to provide torque and power to a rotary drill bit rotating clockwise attached to a drive shaft of a mud motor assembly comprising at least the following steps:
- a. providing relatively high pressure mud from a drill pipe attached to an uphole end of said mud motor assembly;
b. passing at least a first portion of said relatively high pressure mud through a first hydraulic chamber having a first piston that rotates a first crankshaft clockwise about its own rotation axis from its first relative starting position at 0 degrees through a first angle of at least 210 degrees, but less than 360 degrees during its first power stroke;
c. providing clockwise rotational power to said drive shaft during said first power stroke by mechanically coupling said first crankshaft to a first portion of said drive shaft by a first pawl that is flexibly attached by a first torsion rod return spring and second torsion rod return spring to said first crankshaft, and a first pawl latch that is an integral portion of the drive shaft;
d. providing rotary motion to said drill bit mechanically coupling said first pawl to a first flywheel that is operatively coupled to said drill bit;
e. passing at least a second portion of said relatively high pressure mud through a second hydraulic chamber having a second piston that rotates a second crankshaft clockwise about its own rotation axis from its first relative starting position of 0 degrees through a second angle of at least 210 degrees, but less than 360 degrees during its second power stroke;
f. providing clockwise rotational power to said drive shaft during said second power stroke by mechanically coupling said second crankshaft to a second portion of said drive shaft by a second pawl that is flexibly attached by third torsion return spring and fourth torsion rod return spring to said second crankshaft, and second pawl latch that is an integral portion of the drive shaft;
g. providing rotary motion to said drill bit by mechanically coupling said second pawl to a second flywheel that is operatively coupled to said drill bit; and
h. providing first control means and providing second control means to control the relative timing of rotations of said first crankshaft and said second crankshaft respectfully, so that at the particular time that said first crankshaft has rotated from its first relative starting position through 180 degrees nearing the end of its first power stroke at 210 degrees, said second crankshaft begins its rotational motion from its relative starting position of 0 degrees were it begins its second power stroke.
1 Assignment
0 Petitions
Accused Products
Abstract
A longer-lasting, lower cost, more powerful, all metal, mud motor than the presently available progressing cavity type mud motors for drilling boreholes into the earth. A mud motor apparatus possessing one single drive shaft that turns a rotary drill bit, which apparatus is attached to a drill pipe which provides high pressure mud to the mud motor, wherein the drive shaft receives at least a first portion of its rotational torque from any high pressure mud flowing through a first hydraulic chamber within the apparatus, and receives at least a second portion of its rotational torque from any high pressure mud flowing through a second hydraulic chamber within the apparatus. The mud motor apparatus possesses two hydraulic chambers, each having its own power stroke, and return stroke, and acting together in a controlled fashion, provide continuous power to a rotary drill bit.
106 Citations
9 Claims
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1. A method to provide torque and power to a rotary drill bit rotating clockwise attached to a drive shaft of a mud motor assembly comprising at least the following steps:
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a. providing relatively high pressure mud from a drill pipe attached to an uphole end of said mud motor assembly; b. passing at least a first portion of said relatively high pressure mud through a first hydraulic chamber having a first piston that rotates a first crankshaft clockwise about its own rotation axis from its first relative starting position at 0 degrees through a first angle of at least 210 degrees, but less than 360 degrees during its first power stroke; c. providing clockwise rotational power to said drive shaft during said first power stroke by mechanically coupling said first crankshaft to a first portion of said drive shaft by a first pawl that is flexibly attached by a first torsion rod return spring and second torsion rod return spring to said first crankshaft, and a first pawl latch that is an integral portion of the drive shaft; d. providing rotary motion to said drill bit mechanically coupling said first pawl to a first flywheel that is operatively coupled to said drill bit; e. passing at least a second portion of said relatively high pressure mud through a second hydraulic chamber having a second piston that rotates a second crankshaft clockwise about its own rotation axis from its first relative starting position of 0 degrees through a second angle of at least 210 degrees, but less than 360 degrees during its second power stroke; f. providing clockwise rotational power to said drive shaft during said second power stroke by mechanically coupling said second crankshaft to a second portion of said drive shaft by a second pawl that is flexibly attached by third torsion return spring and fourth torsion rod return spring to said second crankshaft, and second pawl latch that is an integral portion of the drive shaft; g. providing rotary motion to said drill bit by mechanically coupling said second pawl to a second flywheel that is operatively coupled to said drill bit; and h. providing first control means and providing second control means to control the relative timing of rotations of said first crankshaft and said second crankshaft respectfully, so that at the particular time that said first crankshaft has rotated from its first relative starting position through 180 degrees nearing the end of its first power stroke at 210 degrees, said second crankshaft begins its rotational motion from its relative starting position of 0 degrees were it begins its second power stroke. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification