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 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.
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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
28 Claims
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1. 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A bit body comprising:
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a first pocket having a diameter;
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 (10, 11)
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12. A bit body comprising:
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a first pocket having a diameter;
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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13. A bit body 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 but no more than three 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 but no more than three single curvature sections along a plane generally perpendicular to the longitudinal axis. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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21. A bit body comprising:
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a first pocket having a diameter;
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 the same as the diameter of the curved surface of the second cutting element.
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22. A bit body comprising:
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a first pocket having a diameter;
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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23. A bit body comprising:
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a first pocket having a diameter;
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, and wherein the difference between the diameters of the two pockets is different from the difference of the diameters of the two curved surfaces. - View Dependent Claims (24, 25)
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26. A bit body comprising:
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a first pocket having a diameter;
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 different from the diameter of the second diameter portion of the first cutting element. - View Dependent Claims (27, 28)
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Specification