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1. 发明申请

US20220081975A1 Drill Bit Inserts and Drill Bits Including Same 有权
公开(公告)号：US20220081975A1
公开(公告)日：2022-03-17
申请号：US17535119
申请日：2021-11-24
申请人： National Oilwell DHT, L.P.
发明人： Reza Rahmani , Navid Omidvar , Afshin Babaie Aghdam , Ryan Basson Graham
IPC分类号： E21B10/567 , E21B10/43 , E21B10/52 , E21B10/627
摘要： An insert for a drill bit includes a base portion. In addition, the insert includes a formation engaging portion extending from the base portion. The formation engaging portion has a longitudinal axis and includes a first end, a second end opposite the first end, a first lateral side extending from the first end to the second end, and a second lateral side extending from the first end to the second end, and an elongate crown extending longitudinally from the first end to the second end and laterally from the first lateral side to the second lateral side. The first lateral side comprises a first curved surface having a first radius of curvature in top view of the insert and the second lateral side includes a second curved surface having a second radius of curvature in top view of the insert. The first radius of curvature of the first curved surface is different than the second radius of curvature of the second curved surface.

2. 发明授权

US11788361B2 Drill bit cutter elements and drill bits including same 有权
公开(公告)号：US11788361B2
公开(公告)日：2023-10-17
申请号：US17528751
申请日：2021-11-17
申请人： National Oilwell DHT, L.P.
发明人： Reza Rahmani , Ryan Basson Graham
IPC分类号： E21B10/567 , E21B10/42
CPC分类号： E21B10/5673 , E21B10/42
摘要： A cutter element for a drill bit includes a base portion having a central axis, a first end, a second end, and a radially outer surface extending axially from the first end to the second end. In addition, the cutter element includes a cutting layer fixably mounted to the first end of the base portion. The cutting layer includes a cutting face distal the base portion and a radially outer surface extending axially from the cutting face to the radially outer surface of the base portion. The cutting face includes a planar central region centered relative to the central axis and disposed in a plane oriented perpendicular to the central axis. Further, the cutting face includes a plurality of circumferentially-spaced cutting regions disposed about the planar central region. Still further, the cutting face includes a plurality of circumferentially-spaced relief regions disposed about the planar central region. The plurality of cutting regions and the plurality of relief regions are circumferentially arranged in an alternating manner such that one relief region is circumferentially disposed between two circumferentially adjacent cutting regions of the plurality of cutting regions. Each relief region is defined by a first edge at an intersection of the relief region and one circumferentially adjacent cutting region and a second edge at an intersection of the relief region and another circumferentially adjacent cutting region. The first edge and the second edge of each relief region are angularly spaced apart about the central axis by an angle α that ranges from 45° to 75°.

3. 发明授权

US11598153B2 Drill bit cutter elements and drill bits including same 有权
公开(公告)号：US11598153B2
公开(公告)日：2023-03-07
申请号：US17270147
申请日：2019-09-10
申请人： National Oilwell DHT, L.P.
发明人： Ryan Basson Graham , Reza Rahmani , Olivia N. Pacheco
IPC分类号： E21B10/567 , E21B10/55 , E21B10/43
摘要： A cutter element for a drill bit includes a base portion having a central axis, a first end, and a second end. In addition, the cutter element includes a cutting layer fixably mounted to the first end of the base portion. The cutting layer includes a cutting face distal the base portion. The cutting face includes an elongate raised ridge having a first end at a radially outer surface of the cutting layer and a second end at the radially outer surface of the cutting layer. The raised ridge defines a maximum height of the cutter element measured axially from the second end of the base portion to the cutting face. The cutting face also includes a first planar lateral side surface and a second planar lateral side surface. Each planar lateral side surface extends from the raised ridge to the radially outer surface of the cutting layer.

4. 发明申请

US20220074271A1 Drill Bit Cutter Elements and Drill Bits Including Same 有权
公开(公告)号：US20220074271A1
公开(公告)日：2022-03-10
申请号：US17528751
申请日：2021-11-17
申请人： National Oilwell DHT, L.P.
发明人： Reza Rahmani , Ryan Basson Graham
IPC分类号： E21B10/567 , E21B10/42
摘要： A cutter element for a drill bit includes a base portion having a central axis, a first end, a second end, and a radially outer surface extending axially from the first end to the second end. In addition, the cutter element includes a cutting layer fixably mounted to the first end of the base portion. The cutting layer includes a cutting face distal the base portion and a radially outer surface extending axially from the cutting face to the radially outer surface of the base portion. The cutting face includes a planar central region centered relative to the central axis and disposed in a plane oriented perpendicular to the central axis. Further, the cutting face includes a plurality of circumferentially-spaced cutting regions disposed about the planar central region. Still further, the cutting face includes a plurality of circumferentially-spaced relief regions disposed about the planar central region. The plurality of cutting regions and the plurality of relief regions are circumferentially arranged in an alternating manner such that one relief region is circumferentially disposed between two circumferentially adjacent cutting regions of the plurality of cutting regions. Each relief region is defined by a first edge at an intersection of the relief region and one circumferentially adjacent cutting region and a second edge at an intersection of the relief region and another circumferentially adjacent cutting region. The first edge and the second edge of each relief region are angularly spaced apart about the central axis by an angle α that ranges from 45° to 75°.

5. 发明授权

US11220869B2 Drill bit inserts and drill bits including same 有权
公开(公告)号：US11220869B2
公开(公告)日：2022-01-11
申请号：US16481133
申请日：2018-02-01
申请人： National Oilwell DHT, L.P.
发明人： Reza Rahmani , Navid Omidvar , Afshin Babaie Aghdam , Ryan Basson Graham
IPC分类号： E21B10/567 , E21B10/43 , E21B10/52 , E21B10/627
摘要： An insert for a drill bit includes a base portion having a central axis and a formation engaging portion. The formation engaging portion includes an elongate peaked ridge, a first flanking surface extending from the peaked ridge, and a second flanking surface extending from the peaked ridge. The first flanking surface is defined by a first curve rotated about a first axis and the second flanking surface is defined by a second curve rotated about a second axis. The first axis and the second axis are disposed in a reference plane that bisects the base portion and contains the central axis of the base portion. The first axis is disposed at a first radius measured in the reference plane and the second axis is disposed at a second radius measured in the reference plane. The first radius is different from the second radius.

6. 发明授权

US11208849B2 Drill bit cutter elements and drill bits including same 有权
公开(公告)号：US11208849B2
公开(公告)日：2021-12-28
申请号：US16673515
申请日：2019-11-04
申请人： National Oilwell DHT, L.P.
发明人： Reza Rahmani , Ryan Basson Graham
IPC分类号： E21B10/567 , E21B10/42
摘要： A cutter element includes a base portion having a central axis, a first end, and a second end. In addition, the cutter element includes a cutting layer fixably mounted to the first end of the base portion. The cutting layer includes a cutting face distal. The cutting face includes a planar central region centered relative to the central axis and disposed in a plane oriented perpendicular to the central axis. The cutting face also includes a plurality of circumferentially-spaced cutting regions disposed about the planar central region. Each cutting region extends from the planar central region to the radially outer surface of the cutting layer. Each cutting region slopes axially toward the base portion moving radially outward from the planar central region to the radially outer surface of the cutting layer. Further, the cutting face includes a plurality of circumferentially-spaced relief regions disposed about the planar central region. Each relief region extends from the planar central region to the radially outer surface. Each relief region slopes axially toward the base portion moving radially outward from the planar central region to the radially outer surface of the cutting layer. The plurality of cutting regions and the plurality of relief regions are circumferentially arranged in an alternating manner such that one relief region is circumferentially disposed two circumferentially adjacent cutting regions of the plurality of cutting regions.

7. 发明申请

US20210172258A1 Drill Bit Cutter Elements and Drill Bits Including Same 有权
公开(公告)号：US20210172258A1
公开(公告)日：2021-06-10
申请号：US17270147
申请日：2019-09-10
申请人： National Oilwell DHT, L.P.
发明人： Ryan Basson Graham , Reza Rahmani , Olivia N. Pacheco
IPC分类号： E21B10/567 , E21B10/55 , E21B10/43
摘要： A cutter element for a drill bit includes a base portion having a central axis, a first end, and a second end. In addition, the cutter element includes a cutting layer fixably mounted to the first end of the base portion. The cutting layer includes a cutting face distal the base portion. The cutting face includes an elongate raised ridge having a first end at a radially outer surface of the cutting layer and a second end at the radially outer surface of the cutting layer. The raised ridge defines a maximum height of the cutter element measured axially from the second end of the base portion to the cutting face. The cutting face also includes a first planar lateral side surface and a second planar lateral side surface. Each planar lateral side surface extends from the raised ridge to the radially outer surface of the cutting layer.

8. 发明申请

US20210131190A1 Drill Bit Cutter Elements and Drill Bits Including Same 有权
公开(公告)号：US20210131190A1
公开(公告)日：2021-05-06
申请号：US16673515
申请日：2019-11-04
申请人： National Oilwell DHT, L.P.
发明人： Reza Rahmani , Ryan Basson Graham
IPC分类号： E21B10/567 , E21B10/42
摘要： A cutter element includes a base portion having a central axis, a first end, and a second end. In addition, the cutter element includes a cutting layer fixably mounted to the first end of the base portion. The cutting layer includes a cutting face distal. The cutting face includes a planar central region centered relative to the central axis and disposed in a plane oriented perpendicular to the central axis. The cutting face also includes a plurality of circumferentially-spaced cutting regions disposed about the planar central region. Each cutting region extends from the planar central region to the radially outer surface of the cutting layer. Each cutting region slopes axially toward the base portion moving radially outward from the planar central region to the radially outer surface of the cutting layer. Further, the cutting face includes a plurality of circumferentially-spaced relief regions disposed about the planar central region. Each relief region extends from the planar central region to the radially outer surface. Each relief region slopes axially toward the base portion moving radially outward from the planar central region to the radially outer surface of the cutting layer. The plurality of cutting regions and the plurality of relief regions are circumferentially arranged in an alternating manner such that one relief region is circumferentially disposed two circumferentially adjacent cutting regions of the plurality of cutting regions.

9. 发明申请

US20210131189A1 Drill Bit Inserts and Drill Bits Including Same 有权
公开(公告)号：US20210131189A1
公开(公告)日：2021-05-06
申请号：US16481133
申请日：2018-02-01
申请人： National Oilwell DHT, L.P.
发明人： Reza Rahmani , Navid Omidvar , Afshin Babaie Aghdam , Ryan Basson Graham
IPC分类号： E21B10/567 , E21B10/43 , E21B10/52 , E21B10/627
摘要： An insert for a drill bit includes a base portion having a central axis and a formation engaging portion. The formation engaging portion includes an elongate peaked ridge, a first flanking surface extending from the peaked ridge, and a second flanking surface extending from the peaked ridge. The first flanking surface is defined by a first curve rotated about a first axis and the second flanking surface is defined by a second curve rotated about a second axis. The first axis and the second axis are disposed in a reference plane that bisects the base portion and contains the central axis of the base portion. The first axis is disposed at a first radius measured in the reference plane and the second axis is disposed at a second radius measured in the reference plane. The first radius is different from the second radius.

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