Apparatuses and methods for at-bit resistivity measurements for an earth-boring drilling tool
First Claim
1. An earth-boring drilling tool, comprising:
- a bit body having at least one blade formed thereon; and
a cutting element at least partially disposed within a pocket of the at least one blade of the bit body, the cutting element comprising;
a cutting element body having a cutting surface thereon; and
at least one sensor disposed within the cutting element body and having at least one exposed surface, the at least one exposed surface being recessed relative to at least a portion of the cutting surface of the cutting element, the at least one sensor oriented and configured to sense resistivity of one of a contacting formation and the cutting element.
3 Assignments
0 Petitions
Accused Products
Abstract
A cutting element for an earth-boring drilling tool comprises a cutting body having a cutting surface thereon, and a sensor coupled with the cutting surface, the sensor configured to determine resistivity of a contacting formation. An earth-boring drilling tool comprises a bit body and an instrumented cutting element coupled with the bit body. The cutting element includes a cutting body having a cutting surface thereon, and at least one sensor located proximate the cutting surface. The at least one sensor is oriented and configured to determine resistivity of a contacting formation. A method of determining resistivity of a subterranean formation during a drilling operation comprises energizing a sensor of an instrumented cutting element of a drill bit, sensing a return signal flowing on or through the subterranean formation through the instrumented cutting element, and determining a resistivity of the subterranean formation based, at least in part, on the return signal.
55 Citations
24 Claims
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1. An earth-boring drilling tool, comprising:
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a bit body having at least one blade formed thereon; and a cutting element at least partially disposed within a pocket of the at least one blade of the bit body, the cutting element comprising; a cutting element body having a cutting surface thereon; and at least one sensor disposed within the cutting element body and having at least one exposed surface, the at least one exposed surface being recessed relative to at least a portion of the cutting surface of the cutting element, the at least one sensor oriented and configured to sense resistivity of one of a contacting formation and the cutting element. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An earth-boring drilling tool, comprising:
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a bit body; and an instrumented cutting element coupled with the bit body, the cutting element including; a substrate; a cutting body disposed on the substrate and having a cutting surface, thereon; at least one sensor disposed within the cutting body, at least one surface of the at least one sensor being at least substantially flush with the cutting surface of the cutting element, wherein the at least one sensor is oriented and configured to sense resistivity of one of a contacting formation and the instrumented cutting element; and at least one conduit coupled to the at least one sensor and extending through the cutting body and through the substrate in a direction at least substantially orthogonal to the cutting surface of the cutting body of the cutting element. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A method of determining resistivity of a subterranean formation during a drilling operation, the method comprising:
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contacting a sensor disposed within a cutting body of a cutting element at least partially disposed within a pocket of a blade of a body of an earth-boring drilling tool with the subterranean formation, an exposed surface of the sensor being recessed relative to at least a portion of a cutting surface of the cutting element; energizing the sensor of the cutting element while the sensor is in contact with the subterranean formation; sensing a return signal flowing on or through the subterranean formation; and determining a resistivity of the subterranean formation based, at least in part, on the return signal. - View Dependent Claims (20, 21, 22, 23, 24)
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Specification