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US 2009/0020333 A1Published application
Measuring the weight on a drill bit during drilling operations using coherent radiation
AssigneeHalliburton Energy Services, Inc.
InventorLaban Marsh
Life of this patent
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Abstract
One embodiment includes an apparatus that includes a coherent radiation source to emit coherent radiation through a signal carrier that is positioned along at least a part of a length of a downhole drilling component. The apparatus also includes a receiver to receive the coherent radiation that is to be emitted through the signal carrier.
Claims17
A method comprising:
- drilling, with a drill string having a drill collar, a borehole through a formation;
- measuring a length of the drill collar based on a coherent radiation transmitted along a length of the drill collar;
- and
- determining a weight on a drill bit of the drill string based on the length of the drill collar.
1 more element
A method comprising:
- receiving a measurement of coherent radiation that has traversed along a length of a drill collar on a drill string;
- and
- generating a value for a weight on a drill bit on the drill string based on the measurement of the coherent radiation.
A machine-readable medium that provides instructions, which when executed by a machine, cause said machine to perform operations comprising:
- receiving a measurement of coherent radiation that has traversed along at least a part of a length of a drill collar on a drill string;
- determining the at least the part of the length of the drill collar based on the measurement of the coherent radiation;
- generating a value for a weight on a drill bit on the drill string based on the at least part of the length of the drill collar.
Dependencies are inferred from the claim text.