Gear reducer
AssigneeTurbo Drill Industries, Inc.
InventorChad Feddema
Life of this patent
Estimating the term…
Abstract
Apparatus and methods relate to a gear reducer, which may be used downhole to reduce rotational speed output from a downhole motor, such as a turbine motor, to a slower speed desired for rotation of a drill bit. The gear reducer includes a planetary gear arrangement coupled to receive rotational input from the downhole motor and a cycloidal gear arrangement driven by rotation resulting from the planetary gear arrangement. An output shaft couples to the cycloidal gear arrangement and rotates during operation slower than the rotational input from the downhole motor.
Claims16
A gear reducer for a downhole motor in a well, comprising:
- a planetary gear arrangement coupled to receive rotational input from the downhole motor;
- a cycloidal gear arrangement coupled to be driven by rotation resulting from the planetary gear arrangement;
- and
- an output shaft coupled to the cycloidal gear arrangement, wherein during operation the output shaft rotates slower than the rotational input from the downhole motor;
- wherein during operation the rotational input from the downhole motor is at a first revolutions per minute (RPM) and crankshafts of the planetary gear arrangement individually rotate during operation at a second RPM greater than the first RPM.
A gear reducer for a downhole motor in a well, comprising:
- a planetary gear arrangement coupled to receive rotational input from the downhole motor;
- a cycloidal gear arrangement coupled to be driven by rotation resulting from the planetary gear arrangement;
- and
- an output shaft coupled to the cycloidal gear arrangement, wherein during operation the output shaft rotates slower than the rotational input from the downhole motor;
- wherein the output shaft rotates slower than the rotational input from the downhole motor due to increasing revolutions per minute (RPM) with the planetary gear arrangement and then decreasing RPM with the cycloidal gear arrangement.
A gear reducer for a downhole motor in a well, comprising:
- a planetary gear arrangement coupled to receive rotational input from the downhole motor;
- a cycloidal gear arrangement coupled to be driven by rotation resulting from the planetary gear arrangement;
- and
- an output shaft coupled to the cycloidal gear arrangement, wherein during operation the output shaft rotates slower than the rotational input from the downhole motor;
- wherein during operation the rotational input from the downhole motor is lefthand rotation opposite of righthand rotation of the output shaft and,
- wherein the planetary gear arrangement comprises:
- a ring gear coupled to rotate with a powered rotor of the downhole motor;
- a first planetary gear meshed with the ring gear and disposed on a first crankshaft;
- and
- a second planetary gear meshed with the ring gear and disposed on a second crankshaft.
A gear reducer for a downhole motor in a well, comprising:
- a planetary gear arrangement coupled to receive rotational input from the downhole motor;
- a cycloidal gear arrangement coupled to be driven by rotation resulting from the planetary gear arrangement;
- and
- an output shaft coupled to the cycloidal gear arrangement, wherein during operation the output shaft rotates slower than the rotational input from the downhole motor;
- wherein during operation the rotational input from the downhole motor is lefthand rotation opposite of righthand rotation of the output shaft and, wherein during operation the rotational input from the downhole motor is at a first revolutions per minute (RPM) and crankshafts of the planetary gear arrangement individually rotate during operation at a second RPM greater than the first RPM.
A gear reducer for a downhole motor in a well, comprising:
- a planetary gear arrangement coupled to receive rotational input from the downhole motor;
- a cycloidal gear arrangement coupled to be driven by rotation resulting from the planetary gear arrangement, and
- an output shaft coupled to the cycloidal gear arrangement, wherein during operation the output shaft rotates slower than the rotational input from the downhole motor;
- wherein during operation the rotational input from the downhole motor is lefthand rotation opposite of righthand rotation of the output shaft and wherein the output shaft rotates slower than the rotational input from the downhole motor due to increasing revolutions per minute (RPM) with the planetary gear arrangement and then decreasing RPM with the cycloidal gear arrangement.
Dependencies are inferred from the claim text.