Drill bit with a sensor for estimating rate of penetration and apparatus for using same
First Claim
Patent Images
1. A drill bit, comprising:
- a bit body;
a member on the bit body configured to contact a formation when the drill bit is utilized to cut into a formation; and
a sensor coupled to the member that is configured to provide signals corresponding to displacement of the member when the member is in contact with the formation, the sensor comprising a material having a stiffness less than a stiffness of the formation.
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Abstract
In one embodiment, an apparatus includes a drill bit, a tip on a bit body configured to contact a formation when the drill bit is utilized to cut into the formation, and a spring coupled to the tip. The apparatus also includes a sensor coupled to the spring and configured to provide signals corresponding to the displacement of the tip when the tip is in contact with the formation.
67 Citations
19 Claims
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1. A drill bit, comprising:
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a bit body; a member on the bit body configured to contact a formation when the drill bit is utilized to cut into a formation; and a sensor coupled to the member that is configured to provide signals corresponding to displacement of the member when the member is in contact with the formation, the sensor comprising a material having a stiffness less than a stiffness of the formation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A bottomhole assembly for use in drilling a wellbore in a formation, comprising:
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a drill bit having a bit body that includes a tip that is configured to contact the formation when the drill bit is utilized to cut into the formation and a sensor coupled to the tip to provide signals corresponding to displacement of the tip when the tip is in contact with the formation, the sensor comprising a material having a stiffness less than a stiffness of the formation; and a processor configured to process signals from the sensor to provide an estimate of rate of penetration of the drill bit into the formation. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A method of making a drill bit, comprising:
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providing a bit body that has a tip on the bit body, the tip member being configured to contact a formation when the drill bit is used for cutting into the formation; and coupling a sensor to the tip in a manner that will generate signals in response to displacement of the tip when the drill bit is used for cutting into the formation, the sensor comprising a material having a stiffness less than a stiffness of the formation. - View Dependent Claims (18, 19)
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Specification