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公开(公告)号：US11808090B2
公开(公告)日：2023-11-07
申请号：US17935126
申请日：2022-09-25
发明人： Ming Zhang , Chris Cheng , Jiaqing Yu , Xiongwen Yang
摘要： The force modulation system for a drill bit includes a cutter, a holder, a holder retention device, and a first force member. The cutter fits in the holder, and the holder fits in the drill bit. The holder retention device exerts a holder retention force in a first direction. The first force member exerts a first force in a second direction. The second direction is angled offset to the first direction so as that the cutting profile of the force modulation system is now variable in the second direction, according to the first force. There can also be a second force member to exert a second force in the first direction for more variability of the cutting profile in the first direction. The second force member can be made integral with the first force member.
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公开(公告)号：US11499378B2
公开(公告)日：2022-11-15
申请号：US17100872
申请日：2020-11-21
发明人： Ming Zhang , Chris Cheng , Jiaqing Yu , Qi Peng , Xiaohua Ke
摘要： The force modulation system for a drill bit includes a cutter, a blade cap, a cap retention device, and a first force member. The cutter or cutters fit in the blade cap, and the blade cap fits to the drill bit. The cap retention device exerts a cap retention force in a first direction. The first force member exerts a first force in a second direction. The cutting profile of the force modulation system is now variable in more than one direction so as to avoid excessive forces from more than one direction for each cutter on the blade cap. There can also be a second force member to exert a second force in the first direction for more variability of the cutting profile in the first direction and a third force member to exert a third force in an opposite second direction.
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公开(公告)号：US11499377B2
公开(公告)日：2022-11-15
申请号：US17100870
申请日：2020-11-21
发明人： Ming Zhang , Chris Cheng , Jiaqing Yu , Xiongwen Yang
摘要： The force modulation system for a drill bit includes a cutter, a holder, a holder retention device, and a first force member. The cutter fits in the holder, and the holder fits in the drill bit. The holder retention device exerts a holder retention force in a first direction. The first force member exerts a first force in a second direction. The second direction is angled offset to the first direction so as that the cutting profile of the force modulation system is now variable in the second direction, according to the first force. There can also be a second force member to exert a second force in the first direction for more variability of the cutting profile in the first direction. The second force member can be made integral with the first force member.
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公开(公告)号：US11879296B2
公开(公告)日：2024-01-23
申请号：US17935127
申请日：2022-09-25
发明人： Ming Zhang , Chris Cheng , Jiaqing Yu , Qi Peng , Xiaohua Ke
摘要： The force modulation system for a drill bit includes a cutter, a blade cap, a cap retention device, and a first force member. The cutter or cutters fit in the blade cap, and the blade cap fits to the drill bit. The cap retention device exerts a cap retention force in a first direction. The first force member exerts a first force in a second direction. The cutting profile of the force modulation system is now variable in more than one direction so as to avoid excessive forces from more than one direction for each cutter on the blade cap. There can also be a second force member to exert a second force in the first direction for more variability of the cutting profile in the first direction and a third force member to exert a third force in an opposite second direction.
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公开(公告)号：US11591858B2
公开(公告)日：2023-02-28
申请号：US17247478
申请日：2020-12-11
发明人： Jiaqing Yu , Chris X. Cheng , Jianhua Guo , Bo Zhou , Shijun Qiao , Chuang Zhang , Xu Wang , Chi Ma , Xiongwen Yang
IPC分类号： E21B10/43 , E21B10/567 , E21B10/54 , E21B10/58
摘要： A drill bit for cutting formation comprises a bit body, a plurality of cutters, a plurality of blades with pockets to accommodate the cutters respectively. Each of the plurality of cutters has an ultra-hard layer, two side facets extending obliquely inward from the substrate to a top surface of the ultra-hard layer, a convex portion between the two side facets. The convex portion comprises a transition surface and the transitional surface is convex as it extends between adjacent the two side facets. The curvature of the transitional surface varies along the cutter axis with the curvature at the cutting edge larger than the curvature of the cutter circumferential surface.
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公开(公告)号：US11365589B2
公开(公告)日：2022-06-21
申请号：US16918842
申请日：2020-07-01
发明人： Chris Cheng , Jiaqing Yu , Xu Wang , Xiongwen Yang , Yu Liu
IPC分类号： E21B10/567 , E21B10/55
摘要： A cutting element comprising a cylindrical substrate; a table bonded to the cylindrical substrate; at least one tooth with a reduced projected cutting area on a periphery of the table; and a plurality of undulating cutting ridges on a top of the table. The table can have a working surface and at least one lateral surface, and a chamfer formed therebetween. The working surface can be a non-planar working surface. For a given weight on the bit, the cutter will sink into the rock deeper which can lead to better stability and more effective rock removal.
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公开(公告)号：US20210002961A1
公开(公告)日：2021-01-07
申请号：US16917449
申请日：2020-06-30
发明人： Chris Cheng , Jiaqing Yu , Jianhua Guo , Jie Li , Xihui Hu , Yonghong Wang
IPC分类号： E21B10/567 , E21B10/55
摘要： A cutting element comprises a cylindrical substrate, a table bonded to the substrate, a working surface on the top of the table, and a plurality of dimples on the working surface. The table is made of super-abrasive material. The super-abrasive material can be PCD. Surface patterns of the table can reduce contact friction between the rock and the cutting element. Therefore, heat on the table can be reduced and thermal damage to the table is decreased. This results in improved cutting element service life.
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公开(公告)号：US12011773B2
公开(公告)日：2024-06-18
申请号：US17331358
申请日：2021-05-26
发明人： Jiaqing Yu , Chris Cheng , Ning Li , David He , Kevin Waddell , Xu Wang , Chi Ma , Xiongwen Yang
IPC分类号： E21B10/567 , B23C5/22
CPC分类号： B23C5/2213 , E21B10/5673 , B23C2200/123 , B23C2200/203
摘要： A drill bit for cutting formation comprises a bit body, a plurality of cutters, and a plurality of blades with pockets to accommodate the cutters, respectively. In an embodiment, the plurality of cutters comprise a substrate, an ultra-hard layer, a concave surface on the top of the ultra-hard layer, wherein the concave surface comprises a plurality of planar and curved surfaces.
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公开(公告)号：US20210002962A1
公开(公告)日：2021-01-07
申请号：US16918842
申请日：2020-07-01
发明人： Chris Cheng , Jiaqing Yu , Xu Wang , Xiongwen Yang , Yu Liu
IPC分类号： E21B10/567
摘要： A cutting element comprising a cylindrical substrate; a table bonded to the cylindrical substrate; at least one tooth with a reduced projected cutting area on a periphery of the table; and a plurality of undulating cutting ridges on a top of the table. The table can have a working surface and at least one lateral surface, and a chamfer formed therebetween. The working surface can be a non-planar working surface. For a given weight on the bit, the cutter will sink into the rock deeper which can lead to better stability and more effective rock removal.
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