Downhole dynamometer
AssigneeHalliburton Energy Services, Inc.
InventorsLyn Duane Labahn, John Leslie Wisinger, Jr., Bradley David Dunbar
Life of this patent
Estimating the term…
Abstract
A method for using a mud motor may comprise drilling a borehole into a formation using a drill string connected to the mud motor and the mud motor is connected to a drill bit, measuring one or more parameters of the mud motor in the borehole, and sending the one or more parameters to surface. A system may comprise a mud motor connected to a drill string, a drill bit connected to the mud motor, a strain gauge, and in information handling system. The strain gauge may be connected to the drill bit and configured to take one or more parameters of the mud motor. The information handling system may be in communication with the strain gauge and configured to record the one or more parameters from the strain gauge.
Claims22
A method for using a mud motor, comprising:
- drilling a borehole into a formation using a drill string connected to the mud motor, wherein the mud motor is connected to a drill bit, wherein the drill bit comprises a plurality of recesses formed in an outer surface of the drill bit, wherein the plurality of recesses comprises at least a first recess and a second recess, and wherein the drill bit comprises at least one bore that extends through the drill bit between the first recess and the second recess;
- measuring one or more parameters of the mud motor in the borehole, wherein the one or more parameters of the mud motor comprise at least a torque measured at the drill bit via a plurality of strain gauges, wherein the plurality of strain gauges comprises at least a first strain gauge and a second strain gauge secured within the first and second recesses, respectively, and wherein the first strain gauge and the second strain gauge are interconnected via a hardwire connection extending through the at least one bore;
- sending the one or more parameters of the mud motor to surface;
- and
- merging the one or more parameters of the mud motor and surface data to identify one or more characteristics of the mud motor, wherein the one or more characteristics of the mud motor at least comprise a rotary torque output of the mud motor, and wherein the rotary torque output of the mud motor is identified by subtracting a rotary torque input from a surface rotary device to the mud motor from the torque measured at the drill bit.
A system comprising:
- a mud motor connected to a drill string;
- a drill bit connected to the mud motor;
- a plurality of recesses formed in the drill bit, wherein the plurality of recesses comprises at least a first recess and a second recess;
- at least one bore formed in the drill bit, wherein the at least one bore extends through the drill bit between the first recess and the second recess;
- a plurality of strain gauges configured to measure one or more parameters of the mud motor, wherein the one or more parameters of the mud motor comprise at least a torque measured at the drill bit via the plurality of strain gauges, wherein the plurality of strain gauges comprises a least a first strain gauge and a second strain gauge secured within the first and second recesses, respectively;
- and
- an information handling system in communication with the at least one strain gauge and configured to record the one or more parameters from the at least one strain gauge, and wherein the information handling system is configured to merge the one or more parameters of the mud motor and surface data to identify one or more characteristics of the mud motor, wherein the one or more characteristics of the mud motor at least comprise a rotary torque output of the mud motor, and wherein the rotary torque output of the mud motor is identified by subtracting a rotary torque input from a surface rotary device to the mud motor from the torque measured at the drill bit.
Dependencies are inferred from the claim text.