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    PLACEMENT OF NON-PLANAR CUTTING ELEMENTS
    3.
    发明申请
    PLACEMENT OF NON-PLANAR CUTTING ELEMENTS 审中-公开

    公开(公告)号：US20180291691A1

    公开(公告)日：2018-10-11

    申请号：US16009294

    申请日：2018-06-15

    申请人： SMITH INTERNATIONAL, INC.

    发明人： Youhe Zhang ,  Xiaoge Gan ,  Huimin Song

    IPC分类号： E21B10/567 ,  E21B10/43

    摘要： A downhole cutting tool includes a tool body having a tool axis, and a blade extending from the tool body. The blade includes a cutting face, a trailing face, and a top face extending between the cutting face and the trailing face. Cutting elements are attached to the bade along the cutting face, with each having a cutting crest at a peak height and a reduced height extending laterally away from the cutting crest. In some cases, first cutting elements along the cutting face and second cutting elements along the top face and rearward from, and at the same radial position as, the first cutting elements have different size, orientation, geometry or material properties. In additional aspects, at least two cutting elements on the blade have differing material properties, sizes, orientations, or working surface geometries along a blade profile of the blade.

    Placement of non-planar cutting elements
    5.
    发明授权
    Placement of non-planar cutting elements 有权

    公开(公告)号：US11091960B2

    公开(公告)日：2021-08-17

    申请号：US16009294

    申请日：2018-06-15

    申请人： SMITH INTERNATIONAL, INC.

    发明人： Youhe Zhang ,  Xiaoge Gan ,  Huimin Song

    IPC分类号： E21B10/43 ,  E21B10/567

    摘要： A downhole cutting tool includes a tool body having a tool axis, and a blade extending from the tool body. The blade includes a cutting face, a trailing face, and a top face extending between the cutting face and the trailing face. Cutting elements are attached to the bade along the cutting face, with each having a cutting crest at a peak height and a reduced height extending laterally away from the cutting crest. In some cases, first cutting elements along the cutting face and second cutting elements along the top face and rearward from, and at the same radial position as, the first cutting elements have different size, orientation, geometry or material properties. In additional aspects, at least two cutting elements on the blade have differing material properties, sizes, orientations, or working surface geometries along a blade profile of the blade.

    CUTTING STRUCTURE OF CUTTING ELEMENTS FOR DOWNHOLE CUTTING
    6.
    发明申请
    CUTTING STRUCTURE OF CUTTING ELEMENTS FOR DOWNHOLE CUTTING 审中-公开

    公开(公告)号：US20180274303A1

    公开(公告)日：2018-09-27

    申请号：US15990997

    申请日：2018-05-29

    申请人： Smith International, Inc.

    发明人： Huimin Song ,  Xiaoge Gan ,  Zhijun Lin ,  Ke Chen

    IPC分类号： E21B10/567 ,  E21B10/573 ,  E21B10/55

    摘要： A cutting element may include a substrate; and an ultrahard layer on the substrate, the substrate and the ultrahard layer defining a non-planar working surface of the cutting element such that the ultrahard layer forms a cutting portion and the substrate is at least laterally adjacent to the ultrahard layer. Another cutting element includes a pointed region having a side surface extending from the pointed region outer perimeter to a peak. An ultrahard material body forms a portion of the pointed region including the peak, and a base region extends a depth from the pointed region outer perimeter. The ultrahard material body has a height to width aspect ratio with the height and width measured between two points of the body having the greatest distance apart along a dimension parallel with a longitudinal axis (i.e., height) along a dimension perpendicular to the longitudinal axis (i.e., width).

    Cutting tool with pre-formed hardfacing segments
    8.
    发明授权
    Cutting tool with pre-formed hardfacing segments 有权

    公开(公告)号：US11591857B2

    公开(公告)日：2023-02-28

    申请号：US16615974

    申请日：2018-05-22

    申请人： Smith International, Inc.

    发明人： Youhe Zhang ,  Huimin Song ,  Jan Stefan Morley

    IPC分类号： E21B10/43 ,  E21B10/633 ,  E21B10/54 ,  B33Y10/00 ,  B33Y80/00 ,  E21B7/06

    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.

    Devices and systems for using additive manufacturing to manufacture a tool crown
    9.
    发明授权
    Devices and systems for using additive manufacturing to manufacture a tool crown 有权

    公开(公告)号：US11459830B2

    公开(公告)日：2022-10-04

    申请号：US15685351

    申请日：2017-08-24

    申请人： Smith International, Inc.

    发明人： Youhe Zhang ,  Xiaoge Gan ,  Huimin Song ,  Rogelio Benitez

    IPC分类号： E21B10/55 ,  E21B10/42 ,  E21B10/62 ,  B22F5/00

    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.

    Split threads for fixing accessories to a body
    10.
    发明授权
    Split threads for fixing accessories to a body 有权

    公开(公告)号：US11220868B2

    公开(公告)日：2022-01-11

    申请号：US16439779

    申请日：2019-06-13

    申请人： Smith International, Inc.

    发明人： Youhe Zhang ,  Yuri Y. Burhan ,  Huimin Song

    IPC分类号： E21B10/43 ,  F16L15/00

    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.