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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：US11702891B2
公开(公告)日：2023-07-18
申请号：US17378942
申请日：2021-07-19
发明人： Lei Zhao , Ming Zhang , Chris Cheng , Jiaxiang Ren , Chengxi Li
摘要： The force modulation system for a drill bit includes a cutter, a holder, a holder retention device, and a first force member made of a first woven material. 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 a cutting profile of the force modulation system is variable. There can also be a second force member of a second woven material 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, including the first woven material and the second woven material being the same material.
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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：US10753167B2
公开(公告)日：2020-08-25
申请号：US16586662
申请日：2019-09-27
发明人： Ming Zhang , Chris Cheng , Dengxiang Bai , Xiongwen Yang , Kuangsheng Zhang , Yuming Wang , Peiyuan Hu
IPC分类号： E21B28/00
摘要： The tool assembly vibrates a casing string or drill string in a wellbore. The tool assembly includes a housing, an insert mounted in the housing as a fluidic agitator, and a cover fitted over the insert. The insert includes an inlet chamber, a vortex chamber, and a feedback chamber, and the fluid flow through the insert has a pressure profile with a plurality of levels determined by the feedback chamber. The strength and frequency of the pressure profile can be regulated by the feedback chamber according to position, size and asymmetry of the transition channels connected to the feedback chamber. The high strength and low frequency pressure pulses can be achieved in the limited space of the housing for placement of the inlet and outlet.
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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：US11794290B2
公开(公告)日：2023-10-24
申请号：US17156592
申请日：2021-01-24
发明人： Jiaxiang Ren , Chris Cheng
IPC分类号： B23P15/28 , F16J15/3284 , E21B10/567
CPC分类号： B23P15/28 , E21B10/567 , F16J15/3284
摘要： The method for forming cutters includes applying a protective layer on an O-ring so as to form a protected O-ring. The protected O-ring is placed around a cutter body having a substrate section and diamond section with a metallic binder. The method includes inserting the cutter body into the pod cavity and leaching the metallic binder through an end portion of the diamond section for at least one day at 60 degrees Celsius or higher so as to form a polycrystalline diamond compact cutter from the cutter body. The protected O-ring seals the substrate section during the step of leaching. The step of leaching forms an exposed O-ring from the protected O-ring with a hardness reduction and a modulus reduction that identifies a time window for maintaining a sealing force to protect the substrate, while achieving the target profile of the diamond table for a high quality and reliable cutter.
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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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公开(公告)号：US12104111B2
公开(公告)日：2024-10-01
申请号：US17654721
申请日：2022-03-14
发明人： Kai Zhang , Chris Cheng , Xiao Feng , Qi Peng , Xiongwen Yang
CPC分类号： C09K3/1436 , B24D11/003
摘要： A superabrasive compact and a method of making the superabrasive compact are disclosed. A superabrasive compact may comprise a diamond table and a substrate. The diamond table may be attached to the substrate. The diamond table may include bonded diamond grains defining interstitial channels. The interstitial channels may be filled with non-catalytic binder materials in some regions. The interstitial channels in some other regions may be filled with a catalytic materials from the substrate.
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公开(公告)号：US10907416B2
公开(公告)日：2021-02-02
申请号：US16927569
申请日：2020-07-13
发明人： Chris Cheng , Hongtao Liu , Javier Davila , Xu Wang , Yuxin Wang , Zhenzhou Yang , Xiongwen Yang
IPC分类号： E21B10/567 , E21B10/42
摘要： The present disclosure provides non-planar cutting tooth and a diamond drill bit. The non-planar cutting tooth comprises a base, a table connected to a top of the base. a concave shaped surface on the center portion of a top surface of the table; three cutting ridges with each extending from a vertex of the concave shaped surface to an outer edge of the top surface; three cutting bevels with each locating between two cutting ridges of the three cutting ridges; each of the three cutting ridges has a fillet.
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公开(公告)号：US10830020B2
公开(公告)日：2020-11-10
申请号：US16658967
申请日：2019-10-21
发明人： Jianhui Xu , Ming Zhang , Chris Cheng , Yu Liu , Xiongwen Yang
摘要： The tool assembly vibrates a casing string or drill string in a wellbore. The tool assembly includes a housing, an insert mounted in the housing as a fluidic agitator, a coating on the insert, and a cover fitted over the insert. The coating on the insert provides erosion resistance and a smooth surface compatible with high velocity fluid flow required to achieve the strength and frequency of desired high strength and low frequency pressure pulses.
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