Drill bit having rotational cutting elements and method of drilling
First Claim
1. A rotary drill bit, comprising:
- a bit body;
a cutting pocket defined in the bit body;
a cutting element rotatably coupled to the bit body, the cutting element being positioned at least partially within the cutting pocket;
a rotation-inducing member operably coupled to the cutting element for inducing rotation of the cutting element relative to the cutting pocket in a first rotational direction while also inducing rolling contact between the cutting element and the cutting pocket such that a rolling contact point between the cutting element and the cutting pocket travels in a rotational direction opposite of the first rotational direction.
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Accused Products
Abstract
A rotary drill bit is disclosed. The rotary drill bit may include a bit body, a cutting pocket defined in the bit body, and a cutting element rotatably coupled to the bit body. The cutting element may be positioned at least partially within the cutting pocket. The rotary drill bit may also include a rotation-inducing member adjacent to the cutting element for inducing rotation of the cutting element relative to the cutting pocket. The rotation-inducing member may include a resilient member or a vibrational member. The rotary drill bit may also include protrusions extending from an interior of the cutting pocket adjacent to an outer diameter of the cutting element. A method of drilling a formation is also disclosed.
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Citations
26 Claims
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1. A rotary drill bit, comprising:
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a bit body; a cutting pocket defined in the bit body; a cutting element rotatably coupled to the bit body, the cutting element being positioned at least partially within the cutting pocket; a rotation-inducing member operably coupled to the cutting element for inducing rotation of the cutting element relative to the cutting pocket in a first rotational direction while also inducing rolling contact between the cutting element and the cutting pocket such that a rolling contact point between the cutting element and the cutting pocket travels in a rotational direction opposite of the first rotational direction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A method of drilling a formation, comprising:
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providing a drill bit comprising; a bit body; a cutting pocket defined in the bit body; a cutting element rotatably coupled to the bit body, the cutting element being positioned at least partially within the cutting pocket; a rotation-inducing member adjacent to the cutting element; contacting the drill bit to a formation; moving the drill bit relative to the formation; inducing rotation of the cutting element in a first rotational direction relative to the cutting pocket via the rotation-inducing member as the drill bit is moved relative to the formation and also inducing a rolling contact between the cutting element and the cutting pocket such that a rolling contact point between the cutting element and the cutting pocket travels in a rotational direction opposite of the first rotational direction.
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25. A rotary drill bit, comprising:
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a bit body; a cutting pocket defined at least partially in the bit body; a cutting element rotatably coupled to the bit body, the cutting element being positioned at least partially within the cutting pocket; a rotation-inducing member located and configured for inducing rotation of the cutting element relative to the cutting pocket, wherein the rotation-inducing member includes a body portion and at least one prong wherein the body portion is coupled with the bit body, and wherein a portion of the at least prong defines a portion of the cutting pocket. - View Dependent Claims (26)
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Specification