Bit Based Formation Evaluation Using A Gamma Ray Sensor
First Claim
Patent Images
1. A drill bit, comprising:
- a bit body;
a gamma ray sensor in the bit body configured to detect naturally occurring gamma rays from a formation being drilled.
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Accused Products
Abstract
A drill bit made according to one embodiment includes at least a gamma ray sensor configured to provide signals representative of a presence and/or amount of a naturally occurring gamma ray source when the drill bit is used for cutting into a formation. A circuit may be configured to process signals from the gamma ray sensor to provide an estimate a parameter relating to the naturally occurring gamma ray source, which may used for purposes such as optimizing drilling parameters and geosteering.
87 Citations
19 Claims
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1. A drill bit, comprising:
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a bit body; a gamma ray sensor in the bit body configured to detect naturally occurring gamma rays from a formation being drilled. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method of making a drill bit, comprising:
placing in a bit body of the drill bit a gamma ray sensor configured to provide signals representative of a naturally occurring gamma ray source in a formation being drilled. - View Dependent Claims (8)
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9. A drilling system for use in drilling a wellbore in an earth formation, comprising:
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a drill string; a drill bit having a bit body positioned at an end of the drill string; a gamma ray sensor in the bit body configured to provide signals representative of one or more naturally occurring gamma ray sources in a formation being drilled; and a processor configured to receive data from the gamma ray sensor and estimate a desired parameter of interest relating to the formation being drilled. - View Dependent Claims (10, 11, 12)
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13. A method for drilling a wellbore in an earth formation, comprising:
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drilling the wellbore with a drill bit having a gamma ray sensor; and detecting one or more naturally occurring gamma ray sources in a formation being drilled using the gamma ray sensor. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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Specification