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公开(公告)号：US11591857B2
公开(公告)日：2023-02-28
申请号：US16615974
申请日：2018-05-22
发明人： Youhe Zhang , Huimin Song , Jan Stefan Morley
摘要： A downhole tool includes a blade coupled to a body. The body and blade rotate about a longitudinal axis. A pre-formed faceplate is connected to the blade and partially defines a cutter pocket therein. Another portion of the cutter pocket is defined by the blade. The cutter pocket includes a sidewall and a base, with the sidewall formed by the blade and the pre-formed faceplate, and the base formed by the blade. The pre-formed faceplate includes a pre-formed hardfacing element. A downhole tool includes a blade coupled to a body. The body and blade rotate about a longitudinal axis. A pre-formed segment is connected to the blade and has a cutter pocket therein. The cutter pocket includes a sidewall and a base, and a cutting element is coupled to the pre-formed segment and within the cutter pocket. The pre-formed segment is optionally made of a different material than the blade and has increased wear and/or erosion resistance compared to the blade.
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公开(公告)号：US11512536B2
公开(公告)日：2022-11-29
申请号：US17250079
申请日：2019-05-20
发明人： Gary R. Portwood , Luca Tedeschi , Alessandro Bertini , Simone Pallesi , Johann Obermair , James Layne Larsen , Alessio Cechi
摘要： A cutting bit includes a bit body and high-pressure body with a high-pressure fluid conduit therethrough. The high-pressure body and bit body are joined together. The high-pressure fluid conduit is configured to convey a fluid at greater than 14.5 ksi, and in some embodiments greater than 40 ksi. The high-pressure fluid conduit may direct the fluid through a nozzle in a fluid jet to weaken material, such as an earth formation. The cutting bit includes at least one roller cone and/or blades with cutting elements thereon to remove the weakened material. A cutting bit includes both high and low-pressure fluid conduits, and high and low-pressure fluid nozzles. The high-pressure nozzles receive fluid flow from a downhole pressure intensifier, and a connection between the bit and the downhole pressure intensifier includes rigid connectors, flexible connectors, or a combination thereof.
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公开(公告)号：US11492852B2
公开(公告)日：2022-11-08
申请号：US16061669
申请日：2016-12-14
发明人： Yahua Bao , John Daniel Belnap , Gregory Caron , Feng Yu , Cheng Peng , Michael David France , John Parker , Anatoliy Garan
IPC分类号： E21B10/55 , E21B10/42 , E21B10/54 , E21B10/58 , E21B10/573 , E21B10/567 , E21B10/48 , B23P15/28
摘要： A cutting device for use in a drill bit has a body including an ultrahard material. The body has a top surface, a front surface, and at least one lateral surface adjacent the top surface. The lateral surface is oriented at a surface angle relative to the top surface between 30 and 150 degrees. One or more locking features are located on the lateral surface.
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公开(公告)号：US11459830B2
公开(公告)日：2022-10-04
申请号：US15685351
申请日：2017-08-24
发明人： Youhe Zhang , Xiaoge Gan , Huimin Song , Rogelio Benitez
摘要： A tool includes a base with a crown extending from the base. The crown is additively manufactured on the base, forming a bond between the crown and the base. At least one protrusion may extend from the base surface into a recess in the crown, such that the crown encompasses the protrusion. The protrusion may mechanically interlock the base and the crown to improve torque transfer between the crown and base. The bond at the contact between the base and crown may include impregnating at least a portion of the crown with the material of the base, or at least a portion of base with the material of the crown, which may improve a connection between the crown and base.
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公开(公告)号：US11358218B2
公开(公告)日：2022-06-14
申请号：US16253361
申请日：2019-01-22
发明人： Mingdong Cai
摘要： A method of making a flux-coated binder includes treating metal binder slugs to have an adherent surface, adding a flux powder to the treated metal binder slugs, and distributing the flux powder on the adherent surface of the metal binder slugs. A method of making a metal-matrix composite-based drill bit body includes loading a matrix powder into a bit body mold, loading a flux-coated binder into the mold on top of the matrix powder to form a load assembly, and heating the load assembly to allow the binder to infiltrate into the matrix powder.
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公开(公告)号：US11220868B2
公开(公告)日：2022-01-11
申请号：US16439779
申请日：2019-06-13
发明人： Youhe Zhang , Yuri Y. Burhan , Huimin Song
摘要： An accessory is coupled to a body using a connection member inserted into a plurality of lateral recesses of a bore. The accessory includes a complementary connection mechanism to the connection member and is tightened in the bore with a torque. An example accessory is a nozzle for use with a drill bit. The nozzle includes threads and the drill bit includes a nozzle bore with lateral recesses. Partial thread segments are inserted into the lateral recesses, and the nozzle is threaded to the partial thread segments.
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公开(公告)号：US11136830B2
公开(公告)日：2021-10-05
申请号：US16271908
申请日：2019-02-11
摘要： A downhole tool includes a cone with an outer surface, a cone axis, and a set on the outer surface thereof. The set includes first and second cutting elements. The first and second cutting elements have respective first and second grips that are different. Another downhole tool includes a body and a cone is connected to, and rotatable relative to, the body. Cutting elements on the cone are arranged in a set to vary in radial position relative to a cone axis, with a first position nearest to, and a last position farthest from, the cone axis. A first cutting element in the first position has a different cutting element geometry type than a second cutting element in the last position. First and second cutting elements may have the same cutting element geometry type and one or more cutting elements therebetween may have different cutting element geometry types.
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公开(公告)号：US20210198952A1
公开(公告)日：2021-07-01
申请号：US17135297
申请日：2020-12-28
发明人： Patrick Virene
IPC分类号： E21B10/32
摘要： An expandable tool includes a cutting block set. The cutting block set includes an upper cutting block and a lower cutting block, arranged longitudinally. The upper cutting block includes upper block splines having an upper block angle. The lower cutting block includes lower block splines having a lower block angle. The upper block angle is greater than the lower block angle, which directs the upper cutting block to extend radially further outward than the lower cutting block.
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公开(公告)号：US20210156202A1
公开(公告)日：2021-05-27
申请号：US17164622
申请日：2021-02-01
发明人： Xiaoge Gan , Huimin Song , Jason Gregg , Sandeep Tammineni
IPC分类号： E21B10/567 , E21B10/42 , E21B10/54
摘要： A cutting element may include a substrate; and an ultrahard layer on the substrate, the ultrahard layer including a non-planar working surface that is surrounded by a peripheral edge having a varying height around a circumference of the cutting element, the working surface also having: a plurality of cutting crests extending from an elevated portion of the peripheral edge across at least a portion of the working surface; at least one valley between the plurality of cutting crests; and a canted surface extending laterally from each of the outer plurality of cutting crests towards a depressed portion of the peripheral edge, a height between the depressed portion and the elevated portion being greater than a height between the elevated portion and the valley.
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公开(公告)号：US11015397B2
公开(公告)日：2021-05-25
申请号：US15538124
申请日：2015-12-04
发明人： Lynn Belnap , Stewart N. Middlemiss
IPC分类号： E21B10/55 , E21B10/62 , E21B10/567 , E21B10/36
摘要： An ultra-hard cutting element for use in a drill bit, such as a percussion drill bit, a rotary cone drill bit, a drag bit, or a reamer. The ultra-hard cutting element includes a base portion, an extension portion on an end of the base portion, and a lip on an outer surface of the extension portion. At least a portion of the outer surface of the extension portion includes an ultra-hard abrasive material. The ultra-hard abrasive material may be polycrystalline diamond or polycrystalline cubic boron nitride.
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