公开(公告)号：US10570667B2

公开(公告)日：2020-02-25

申请号：US14553849

申请日：2014-11-25

申请人： National Oilwell DHT, L.P.

发明人： Deepthi Raj Setlur ,  Michael D. Hughes ,  Mark Jonathan Francis ,  Harold A. Sreshta ,  Guodong Zhan ,  Russell C. Gilleylen ,  JiinJen Albert Sue

IPC分类号： E21B10/567 ,  B24D18/00 ,  E21B10/573 ,  B22F3/16 ,  B22F7/02 ,  C22C19/07 ,  B22F3/105

摘要： A polycrystalline-diamond cutting element for a drill bit of a downhole tool. The cutting element includes a substrate and a diamond table bonded to the substrate. The diamond table includes a diamond filler with at least one leached polycrystalline diamond segment packed therein along at least one working surface thereof. The cutting element may be formed by positioning the diamond table on the substrate and bonding the diamond table onto the substrate such that the polycrystalline diamond segment is positioned along at least one working surface of the diamond table. A spark plasma sintering or double press operation may be used to bond the diamond table onto the substrate.

公开(公告)号：US20200149353A1

公开(公告)日：2020-05-14

申请号：US16741444

申请日：2020-01-13

申请人： National Oilwell DHT, L.P.

发明人： Deepthi Raj Setlur ,  Michael D. Hughes ,  Mark Jonathan Francis ,  Harold A. Sreshta ,  Guodong Zhan ,  Russell C. Gilleylen ,  JiinJen Albert Sue

IPC分类号： E21B10/567 ,  E21B10/573 ,  B24D18/00 ,  C22C19/07 ,  B22F7/02 ,  B22F3/16

摘要： A polycrystalline-diamond cutting element for a drill bit of a downhole tool. The cutting element includes a substrate and a diamond table bonded to the substrate. The diamond table includes a diamond filler with at least one leached polycrystalline diamond segment packed therein along at least one working surface thereof. The cutting element may be formed by positioning the diamond table on the substrate and bonding the diamond table onto the substrate such that the polycrystalline diamond segment is positioned along at least one working surface of the diamond table. A spark plasma sintering or double press operation may be used to bond the diamond table onto the substrate.

公开(公告)号：US20150075877A1

公开(公告)日：2015-03-19

申请号：US14553849

申请日：2014-11-25

申请人： National Oilwell DHT, L.P.

发明人： Deepthi Raj Setlur ,  Michael D. Hughes ,  Mark Jonathan Francis ,  Harold A. Sreshta ,  Guodong Zhan ,  Russell C. Gilleylen ,  JiinJen Albert Sue

IPC分类号： E21B10/567 ,  B24D18/00 ,  E21B10/573

摘要： A polycrystalline-diamond cutting element for a drill bit of a downhole tool. The cutting element includes a substrate and a diamond table bonded to the substrate. The diamond table includes a diamond filler with at least one leached polycrystalline diamond segment packed therein along at least one working surface thereof. The cutting element may be formed by positioning the diamond table on the substrate and bonding the diamond table onto the substrate such that the polycrystalline diamond segment is positioned along at least one working surface of the diamond table. A spark plasma sintering or double press operation may be used to bond the diamond table onto the substrate.

摘要翻译： 用于井下工具的钻头的多晶金刚石切割元件。 切割元件包括基底和结合到基底的金刚石台。 钻石台包括金刚石填料，其中至少一个浸出的多晶金刚石段沿其至少一个工作表面装入其中。 切割元件可以通过将金刚石台定位在基底上并将金刚石台结合到基底上而形成，使得多晶金刚石段沿钻石台的至少一个工作表面定位。 可以使用火花等离子体烧结或双压操作将金刚石台结合到基底上。