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US 12,577,839 B2Granted
Devices, systems, and methods of a cutting element in a bit
AssigneeSchlumberger Technology Corporation
InventorsYouhe Zhang, Balasubramanian Durairajan, Ryan Mushinski, Huimin Song, Xiaoge Gan
Life of this patent
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Abstract
A cutting element may include a substrate having a base. A cutting element may include an ultrahard layer bonded to the substrate, the ultrahard layer formed from an ultrahard material, the ultrahard layer including: a side surface adjacent to the base, the side surface including a plurality of cutting surfaces; and an upper surface extending into the ultrahard layer.
Claims19
A cutting element, comprising:
- a substrate having a base;
- an ultrahard layer joined to the substrate opposite the base, the ultrahard layer formed from an ultrahard material, the ultrahard layer including an upper surface recessed into the ultrahard layer toward the base;
- and
- a side surface extending between the base and the upper surface, the side surface including a plurality of cutting surfaces arranged one after another in a circumferential direction about a central axis of the cutting element, each cutting surface of the plurality of cutting surfaces facing radially outward from the central axis, each cutting surface of the plurality of cutting surfaces being angled inwardly toward the central axis, and each cutting surface of the plurality of cutting surfaces intersecting adjacent cutting surfaces of the plurality of cutting surfaces in the circumferential direction;
- wherein the cutting element further comprises at least one of:
- the plurality of cutting surfaces include a first cutting surface having a first relief angle between the upper surface and the first cutting surface, and a second cutting surface having a second relief angle between the upper surface and the second cutting surface, wherein the first relief angle is different than the second cutting surface;
- the plurality of cutting surfaces include a first cutting surface having a first cutting surface angle with respect to the central axis of the cutting element, and a second cutting surface having a second cutting surface angle with respect to the central axis, wherein the first cutting surface angle is different from the second cutting surface angle;
- a first cutting surface directly adjacent and oriented at an angle relative to a second cutting surface of the plurality of cutting surfaces in the circumferential direction around the central axis of the cutting element, wherein the angle is approximately 90°;
- or
- each cutting surface of the plurality of cutting surfaces has a cutting edge that intersects the upper surface, and each cutting edge of the plurality of cutting surfaces is an arcuate cutting edge that curves downward from a peak in opposite circumferential directions toward intersections with cutting edges of adjacent cutting surfaces of the plurality of cutting surfaces.
7 more elements
A bit, comprising:
- a body;
- a blade connected to the body, the blade including a cutting element pocket having a pocket base;
- and
- a cutting element secured to the body in the cutting element pocket, the cutting element including:
- a substrate inserted into the cutting element pocket;
- an ultrahard layer;
- a plurality of cutting surfaces arranged one after another in a circumferential direction about a central axis of the cutting element, each cutting surface of the plurality of cutting surfaces facing radially outward from the central axis, each cutting surface of the plurality of cutting surfaces being angled inwardly toward the central axis, and each cutting surface of the plurality of cutting surfaces intersecting adjacent cutting surfaces of the plurality of cutting surfaces in the circumferential direction, wherein the plurality of cutting surfaces includes:
- a first cutting surface oriented approximately parallel to a leading surface of the blade in a direction of rotation of the bit about a rotational axis;
- a second cutting surface angled away from the first cutting surface and away from the direction of rotation, wherein the second cutting surface faces radially inward toward the rotational axis of the bit;
- and
- a third cutting surface angled away from the first cutting surface and away from the direction of rotation, wherein the third cutting surface faces radially outward away from the rotational axis of the bit;
- and
- an upper surface recessed into the cutting element.
10 more elements
A method for manufacturing a bit, comprising:
- forming a cutting element pocket in a blade of a bit;
- inserting a cutting element into the cutting element pocket, the cutting element complementary to the cutting element pocket, a side surface of the cutting element including a plurality of cutting surfaces arranged one after another in a circumferential direction about a central axis of the cutting element, each cutting surface of the plurality of cutting surfaces facing radially outward from the central axis, each cutting surface of the plurality of cutting surfaces being angled inwardly toward the central axis, each cutting surface of the plurality of cutting surfaces intersecting adjacent cutting surfaces of the plurality of cutting surfaces in the circumferential direction, each cutting surface of the plurality of cutting surfaces having a cutting edge that intersects an upper surface, and the cutting edge of each cutting surface of the plurality of cutting surfaces is an arcuate cutting edge that varies in an axial distance from a base of the cutting element in opposite circumferential directions toward intersections with cutting edges of adjacent cutting surfaces of the plurality of cutting surfaces;
- orienting the cutting element so that one of the plurality of cutting surfaces is oriented in a cutting direction of the bit;
- and
- securing the cutting element to the cutting element pocket.
2 more elements
Dependencies are inferred from the claim text.