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公开(公告)号：US20220162914A1
公开(公告)日：2022-05-26
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：US20210370419A1
公开(公告)日：2021-12-02
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： B23C5/22
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：US20240093556A1
公开(公告)日：2024-03-21
申请号：US18526335
申请日：2023-12-01
发明人： Jiaqing YU , Chris Cheng , Xu Wang , Ming Yi , Chi Ma
IPC分类号： E21B10/567 , E21B10/43
CPC分类号： E21B10/5673 , E21B10/43 , E21B10/5676
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. Each of the plurality of cutters has a substrate, an ultra-hard layer, an inclined surface on the top of the ultra-hard layer, wherein the inclined surface slants downward from a cutting edge to a trailing edge. The cutter can improve cutting efficiency and service life.
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公开(公告)号：US20220162913A1
公开(公告)日：2022-05-26
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：US20230015607A1
公开(公告)日：2023-01-19
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：US20230015380A1
公开(公告)日：2023-01-19
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：US20220003046A1
公开(公告)日：2022-01-06
申请号：US17331353
申请日：2021-05-26
发明人： Jiaqing YU , Chris Cheng , Xu Wang , Ming Yi , Chi Ma
IPC分类号： E21B10/567 , E21B10/43
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. Each of the plurality of cutters has a substrate, an ultra-hard layer, an inclined surface on the top of the ultra-hard layer, wherein the inclined surface slants downward from a cutting edge to a trailing edge. The cutter can improve cutting efficiency and service life.
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