Multiple diameter cutting elements and bits incorporating the same
First Claim
Patent Images
1. A cutting element comprising:
- a body comprising a longitudinal axis and an exposed periphery comprising at least two constant curvature sections extending along a length of the body, each section having a single radius of curvature along a first plane generally perpendicular to the longitudinal axis, wherein each section has a different radius of curvature from an adjacent section along said first plane, said constant curvature sections defining the entire periphery, wherein at least one of said constant curvature sections is for mating with a bit; and
an ultra hard material layer formed over the body, the ultra hard material layer having a periphery, wherein the ultra hard material layer periphery comprises at least two constant curvature sections along a second plane generally perpendicular to the longitudinal axis.
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Accused Products
Abstract
Cutting elements are provided having multiple diameter sections. Also provided are bits incorporating such cutting elements.
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Citations
52 Claims
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1. A cutting element comprising:
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a body comprising a longitudinal axis and an exposed periphery comprising at least two constant curvature sections extending along a length of the body, each section having a single radius of curvature along a first plane generally perpendicular to the longitudinal axis, wherein each section has a different radius of curvature from an adjacent section along said first plane, said constant curvature sections defining the entire periphery, wherein at least one of said constant curvature sections is for mating with a bit; and an ultra hard material layer formed over the body, the ultra hard material layer having a periphery, wherein the ultra hard material layer periphery comprises at least two constant curvature sections along a second plane generally perpendicular to the longitudinal axis. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A bit comprising:
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a body comprising, a first pocket having a diameter, and a second pocket having a diameter that is the same as the diameter of the first pocket; a first cutting element mounted on the first pocket, the first cutting element having a body and a cutting layer each having a first diameter portion and a second diameter portion, wherein the second diameter portions have diameters different from the diameters of the first diameter portions, wherein the body first diameter portion is brazed to the first pocket; and a second cutting element mounted on the second pocket, the second cutting element having a body and a cutting layer each having a first diameter portion and a second diameter portion, wherein the second cutting element second diameter portions have diameters different from the diameters of the second cutting element first diameter portions, wherein the second cutting element body first diameter portion is brazed to the second pocket, and wherein the diameter of the second diameter portion of the second cutting element is greater than the diameter of the second diameter portion of the first cutting element. - View Dependent Claims (12, 13, 14, 15)
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16. A bit comprising:
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a body comprising, a first pocket having a diameter, and a second pocket having a diameter that is the same as the diameter of the first pocket; a first cutting element mounted on the first pocket; and a second cutting element mounted on the second pocket, wherein each cutting element comprises a curved surface for contacting earth formations during drilling, wherein the curved surface of the first cutting element has a diameter that is different from a diameter of the curved surface of the second cutting element.
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17. A bit comprising:
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a bit body having a pocket; and a cutting element having a longitudinal axis and mounted on the pocket, the cutting element comprising, a cutting element body comprising a periphery comprising at least two constant curvature sections along a first plane generally perpendicular to the longitudinal axis, wherein each section has a different radius of curvature from an adjacent section, said constant curvature sections defining the entire periphery, said periphery interfacing with said pocket, and an ultra hard material layer formed over the cutting element body, the ultra hard material layer having a periphery, wherein the ultra hard material layer periphery comprises at least two constant curvature sections along a second plane generally perpendicular to the longitudinal axis. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. A bit comprising:
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a body comprising, a first pocket having a diameter as measured along a plane perpendicular to a longitudinal axis of the first pocket, and a second pocket having a diameter, as measured along a plane perpendicular to a longitudinal axis of the second pocket, that is different from the diameter of the first pocket; a first cutting element mounted on the first pocket; and a second cutting element mounted on the second pocket, wherein the first cutting element comprises a curved surface having a first curvature along a plane generally perpendicular to a longitudinal axis of the first cutting element for contacting an earth formation during drilling, wherein the second cutting element comprises a curved surface having a second curvature along a plane generally perpendicular to a longitudinal axis of the second cutting element for contacting an earth formation during drilling, wherein the first curvature has a diameter that is the same as the diameter of the second curvature.
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28. A bit comprising:
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a body comprising, a first pocket having a diameter, and a second pocket having a diameter that is different from the diameter of the first pocket; a first cutting element mounted on the first pocket, the first cutting element having a body and a cutting layer each having a first diameter portion and a second diameter portion, wherein the second diameter portions have diameters different from the diameters of the first diameter portions, wherein the body first diameter portion is brazed to the first pocket; and a second cutting element mounted on the second pocket, the second cutting element having a body and a cutting layer each having a first diameter portion and a second diameter portion, wherein the second cutting element second diameter portions have diameters different from the diameters of the second cutting element first diameter portions, wherein the second cutting element body first diameter portion is brazed to the second pocket, and wherein the diameter of the second diameter portion of the second cutting element is the same as the diameter of the second diameter portion of the first cutting element.
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29. A bit comprising:
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a body comprising, a first pocket having a diameter as measured along a plane perpendicular to a longitudinal axis of the first pocket, and a second pocket, as measured along a plane perpendicular to a longitudinal axis of the second pocket, having a diameter that is different from the diameter of the first pocket; a first cutting element mounted on the first pocket; and a second cutting element mounted on the second pocket, wherein each cutting element comprises a first curved surface for contacting earth formations during drilling and a second curved surface adjacent the first curved surface, wherein the first curved surface of the first cutting element has a first diameter as measured along a first plane perpendicular to a longitudinal axis of the first cutting element, wherein the second cutting element first curved surface has a second diameter as measured along a second plane perpendicular to a longitudinal axis of the second cutting element, wherein the first diameter is different from the second diameter, wherein the first cutting element second curved surface has a curvature having a third diameter as measured along the first plane, wherein the second cutting element second curvature has a fourth diameter as measured along the second plane, wherein the difference between the diameters of the two pockets is different from the difference of the first and second diameters, and wherein the first diameter is not equal to the third diameter and the second diameter is not equal to the fourth diameter. - View Dependent Claims (30, 31)
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32. A bit comprising:
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a body comprising, a first pocket having a diameter as measured along a plane perpendicular to a longitudinal axis of the first pocket, and a second pocket having a diameter, as measured along a plane perpendicular to a longitudinal axis of the second pocket, that is different from the diameter of the first pocket; a first cutting element mounted on the first pocket, the first cutting element having a body and a cutting layer each having a first diameter portion and a second diameter portion, wherein each diameter portion of the body is measure along a plane perpendicular to a longitudinal axis of the first cutting element, wherein each diameter portion of the cutting layer is measured along another plane perpendicular to the longitudinal axis of the first cutting element, wherein the second diameter portions have diameters different from the diameters of the first diameter portions, wherein the body first diameter portion is attached to the first pocket; and a second cutting element mounted on the second pocket, the second cutting element having a body and a cutting layer each having a first diameter portion and a second diameter portion, wherein each diameter portion of the second cutting element body is measured along a plane generally perpendicular to a longitudinal axis the second cutting element, wherein each diameter portion of the second cutting element cutting layer is measured along another plane generally perpendicular to the longitudinal axis of the second cutting element, wherein the second cutting element second diameter portions have diameters different from the diameters of the second cutting element first diameter portions, wherein the second cutting element body first diameter portion is attached to the second pocket, and wherein the diameter of the second diameter portion of the second cutting element is different from the diameter of the second diameter portion of the first cutting element. - View Dependent Claims (33, 34, 35)
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36. A bit comprising:
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a body comprising, a first pocket having a diameter, and a second pocket having a diameter that is different from the diameter of the first pocket; a first cutting element mounted on the first pocket; and a second cutting element mounted on the second pocket, wherein each cutting element comprises a curved surface for contacting earth formations during drilling, wherein the curved surface of the first cutting element has a diameter that is different from a diameter of the curved surface of the second cutting element, wherein the difference between the diameters of the two pockets is different from the difference of the diameters of the two curved surfaces, and wherein the difference between the diameters of the first and second pockets is less than the difference between the diameters of the two curved surfaces.
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37. A bit comprising:
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a body comprising, a first pocket having a diameter, and a second pocket having a diameter that is different from the diameter of the first pocket; a first cutting element mounted on the first pocket, the first cutting element having a body and a cutting layer each having a first diameter portion and a second diameter portion, wherein the second diameter portions have diameters different from the diameters of the first diameter portions, wherein the body first diameter portion is brazed to the first pocket; and a second cutting element mounted on the second pocket, the second cutting element having a body and a cutting layer each having a first diameter portion and a second diameter portion, wherein the second cutting element second diameter portions have diameters different from the diameters of the second cutting element first diameter portions, wherein the second cutting element body first diameter portion is brazed to the second pocket, wherein the diameter of the second diameter portion of the second cutting element is different from the diameter of the second diameter portion of the first cutting element and wherein the difference between the diameters of the first and second pockets is less than the difference between the diameter of the second diameter portion of the second cutting element and the diameter of the second diameter portion of the first cutting element.
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38. A bit comprising:
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a body comprising a first pocket having a first diameter as measured along a plane perpendicular to a longitudinal axis of the first pocket and a second pocket having a second diameter as measured along a plane perpendicular to the longitudinal axis of the second pocket; a first cutting element mounted in the first pocket, the first cutting element having a first body and a first cutting layer, wherein the first body has a first section having a third diameter as measured along a plane perpendicular to a longitudinal axis of the first body and a second section having a fourth diameter as measured along the plane perpendicular to the longitudinal axis of the first body, wherein the first cutting layer has a first section having a fifth diameter as measured along a plane perpendicular to a longitudinal axis of the first cutting layer and a second section having a sixth diameter as measured along the plane perpendicular to the longitudinal axis of the first cutting layer, wherein the first body first section is attached to the first pocket; a second cutting element mounted in the second pocket, wherein the second cutting element comprises a second body and a second cutting layer, wherein the second body has a first section having a seventh diameter as measured along a plane perpendicular to a longitudinal axis of the second body and a second section having an eighth diameter as measured along the plane perpendicular to the longitudinal axis of the second body, wherein the second cutting layer has a first section having a ninth diameter as measured along a plane perpendicular to a longitudinal axis of the second cutting layer and a second section having a tenth diameter as measured along the plane perpendicular to the longitudinal axis of the second cutting layer, wherein the second body first section is attached to the second pocket, wherein at least one of said fifth, sixth, ninth and tenth diameters is not equal to another of said fifth, sixth, ninth and tenth diameters, wherein when the first diameter is not equal to the second diameter, the sixth diameter is equal to the tenth diameter, and wherein when the first diameter is equal to the second diameter, the sixth diameter is not equal to the tenth diameter. - View Dependent Claims (39, 40, 41, 42, 43, 44, 45, 46, 47, 48)
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49. A cutting element comprising:
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a body comprising a longitudinal axis and a periphery comprising at least two single curvature sections, each section having a single radius of curvature along a plane generally perpendicular to the longitudinal axis, wherein each section has a different radius of curvature from an adjacent section, said single curvature sections defining the entire periphery; and an ultra hard material layer formed over the body, the ultra hard material layer having a periphery, wherein the ultra hard material layer periphery comprises at least two single curvature sections along a plane generally perpendicular to the longitudinal axis, wherein all single curvature sections of said ultra hard material layer have an equal thickness as measured longitudinally along the periphery of said ultra hard material layer.
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50. A bit comprising:
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a bit body having a pocket; and a cutting element having a longitudinal axis and mounted on the pocket, the cutting element comprising, a cutting element body comprising a periphery comprising at least two single curvature sections along a plane generally perpendicular to the longitudinal axis, wherein each section has a different radius of curvature from an adjacent section, said single curvature sections defining the entire periphery, and an ultra hard material layer formed over the cutting element body, the ultra hard material layer having a periphery, wherein the ultra hard material layer periphery comprises at least two single curvature sections along a plane generally perpendicular to the longitudinal axis, wherein all single curvature sections of said cutting element ultra hard material have an equal thickness as measured longitudinally along the periphery of said ultra hard material layer.
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51. A cutting element comprising:
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a body comprising a longitudinal axis and an exposed periphery comprising at least two constant curvature sections, each section having a single radius of curvature along a first plane generally perpendicular to the longitudinal axis, wherein each section has a different radius of curvature from an adjacent section, said constant curvature sections defining the entire periphery; and an ultra hard material layer formed over the body, the ultra hard material layer having a periphery, wherein the ultra hard material layer periphery comprises at least two constant curvature sections along a second plane generally perpendicular to the longitudinal axis, wherein all constant curvature sections of said ultra hard material layer have an equal thickness as measured longitudinally along the periphery of said ultra hard material layer.
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52. A bit comprising:
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a bit body having a pocket; and a cutting element having a longitudinal axis and mounted on the pocket, the cutting element comprising, a cutting element body comprising a periphery comprising at least two constant curvature sections along a first plane generally perpendicular to the longitudinal axis, wherein each section has a different radius of curvature from an adjacent section, said constant curvature sections defining the entire periphery, said periphery interfacing with said pocket, and an ultra hard material layer formed over the cutting element body, the ultra hard material layer having a periphery, wherein the ultra hard material layer periphery comprises at least two constant curvature sections along a second plane generally perpendicular to the longitudinal axis, wherein all constant curvature sections of said cutting element ultra hard material have an equal thickness as measured longitudinally along the periphery of said ultra hard material layer.
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Specification