公开(公告)号：EP3191677A4

公开(公告)日：2018-05-02

申请号：EP15839261

申请日：2015-09-08

Applicant: BAKER HUGHES INC

Inventor： PATEL SURESH ,  STOCKEY DAVID A ,  FLORES ALEJANDRO ,  DIGIOVANNI ANTHONY A ,  SCOTT DANNY E ,  LEDGERWOOD LEROY W

IPC: E21B10/42 ,  E21B10/43

CPC classification number: E21B10/5673 ,  B24D3/008 ,  B24D18/00 ,  B24D99/005 ,  C23C16/27 ,  E21B10/43 ,  E21B10/55 ,  E21B10/573 ,  E21B2010/425

Abstract: A cutting element for an earth-boring tool includes a substrate and volume of superabrasive material positioned on the substrate. The volume of superabrasive material includes a cutting face having at least one recess extending into the volume of superabrasive material and/or at least one protrusion extending outward from the volume of superabrasive material. The volume of superabrasive material includes a first chamfer surface having a peripheral edge and a radially innermost edge. The peripheral edge of the first chamfer surface is located proximate a cutting edge of the volume of superabrasive material. A radial width of the first chamfer surface is between about 0.002 inch and about 0.045 inch. The volume of superabrasive material also includes a second chamfer surface having a peripheral edge and a radially innermost edge. The peripheral edge of the second chamfer surface is located adjacent the radially innermost edge of the first chamfer surface.

公开(公告)号：ZA201700699B

公开(公告)日：2020-01-29

申请号：ZA201700699

申请日：2017-01-27

Applicant: BAKER HUGHES INC

Inventor： STOCKEY DAVID A ,  FLORES ALEJANDRO ,  DIGIOVANNI ANTHONY A

公开(公告)号：CA2960640A1

公开(公告)日：2016-03-17

申请号：CA2960640

申请日：2015-09-08

Applicant: BAKER HUGHES INC

Inventor： PATEL SURESH ,  STOCKEY DAVID A ,  FLORES ALEJANDRO ,  DIGIOVANNI ANTHONY A ,  SCOTT DANNY E ,  LEDGERWOOD LEROY W

IPC: E21B10/42 ,  E21B10/43

Abstract: A cutting element for an earth-boring tool includes a substrate and volume of superabrasive material positioned on the substrate. The volume of superabrasive material includes a cutting face having at least one recess extending into the volume of superabrasive material and/or at least one protrusion extending outward from the volume of superabrasive material. The volume of superabrasive material includes a first chamfer surface having a peripheral edge and a radially innermost edge. The peripheral edge of the first chamfer surface is located proximate a cutting edge of the volume of superabrasive material. A radial width of the first chamfer surface is between about 0.002 inch and about 0.045 inch. The volume of superabrasive material also includes a second chamfer surface having a peripheral edge and a radially innermost edge. The peripheral edge of the second chamfer surface is located adjacent the radially innermost edge of the first chamfer surface.

公开(公告)号：EP3167146A4

公开(公告)日：2018-03-14

申请号：EP15818384

申请日：2015-07-09

Applicant: BAKER HUGHES INC

Inventor： STOCKEY DAVID A ,  FLORES ALEJANDRO ,  DIGIOVANNI ANTHONY A

IPC: E21B10/42 ,  E21B10/43 ,  E21B10/54 ,  E21B10/567 ,  E21B10/62

CPC classification number: E21B10/567 ,  B22F2005/001 ,  C22C26/00 ,  E21B7/00 ,  E21B10/5676 ,  E21B10/5735

Abstract: An earth-boring tool includes a cutting element having a first volume of polycrystalline material including catalyst material and a second volume free of catalyst material. A boundary between the first volume and the second volume is nonlinear in a cross-sectional plane that includes a centerline of the cutting element and an anticipated point of contact of the cutting element with the surface of the formation to be cut. Each line tangent the boundary in the cross-sectional plane forms an angle with the centerline of the cutting element greater than the contact back rake angle of the cutting element. In some cutting elements, some portions of the boundary may have another selected shape. Some cutting elements have a boundary wherein tangent lines form angles of greater than 20° with the centerline of the cutting element. Methods of forming wellbores are also disclosed.

公开(公告)号：EP3119978A4

公开(公告)日：2017-11-22

申请号：EP15765767

申请日：2015-03-13

Applicant: BAKER HUGHES INC

Inventor： STOCKEY DAVID A

IPC: E21B10/42 ,  B24D3/10 ,  B24D18/00 ,  B24D99/00 ,  E21B10/46 ,  E21B10/62

CPC classification number: E21B10/55 ,  B22F2005/001 ,  B24D3/005 ,  B24D3/10 ,  B24D18/0009 ,  B24D99/005 ,  C22C26/00 ,  E21B10/42 ,  E21B10/5673

Abstract: A cutting element may include a substrate and a volume of polycrystalline diamond material affixed to the substrate at an interface. The volume of polycrystalline diamond may include a front cutting face with at least one substantially planar portion and at least one recess. The at least one recess may extend from a plane defined by the at least one substantially planar portion a first depth into the volume of polycrystalline diamond material in an axial direction parallel to a central axis of the cutting element. The volume of polycrystalline diamond material may comprise a region including a catalyst material. At least one region substantially free of the catalyst material may extend from the at least one substantially planar portion of the front cutting face a second depth into the volume of polycrystalline diamond in the axial direction. Methods of forming cutting elements.

公开(公告)号：CA2954288C

公开(公告)日：2019-04-30

申请号：CA2954288

申请日：2015-07-09

Applicant: BAKER HUGHES INC

Inventor： STOCKEY DAVID A ,  FLORES ALEJANDRO ,  DIGIOVANNI ANTHONY A

IPC: E21B10/42 ,  E21B10/43 ,  E21B10/54 ,  E21B10/62

Abstract: An earth-boring tool includes a cutting element having a first volume of polycrystalline material including catalyst material and a second volume free of catalyst material. A boundary between the first volume and the second volume is nonlinear in a cross-sectional plane that includes a centerline of the cutting element and an anticipated point of contact of the cutting element with the surface of the formation to be cut. Each line tangent the boundary in the cross-sectional plane forms an angle with the centerline of the cutting element greater than the contact back rake angle of the cutting element. In some cutting elements, some portions of the boundary may have another selected shape. Some cutting elements have a boundary wherein tangent lines form angles of greater than 20° with the centerline of the cutting element. Methods of forming wellbores are also disclosed.

公开(公告)号：ZA201606721B

公开(公告)日：2018-08-29

申请号：ZA201606721

申请日：2016-09-28

Applicant: BAKER HUGHES INC

Inventor： STOCKEY DAVID A

公开(公告)号：ZA201702080B

公开(公告)日：2020-01-29

申请号：ZA201702080

申请日：2017-03-24

Applicant: BAKER HUGHES INC

Inventor： PATEL SURESH ,  STOCKEY DAVID A ,  FLORES ALEJANDRO ,  DIGIOVANNI ANTHONY A ,  SCOTT DANNY E ,  LEDGERWOOD LEROY W

公开(公告)号：CA2954288A1

公开(公告)日：2016-01-14

申请号：CA2954288

申请日：2015-07-09

Applicant: BAKER HUGHES INC

Inventor： STOCKEY DAVID A ,  FLORES ALEJANDRO ,  DIGIOVANNI ANTHONY A

IPC: E21B10/42 ,  E21B10/43 ,  E21B10/54 ,  E21B10/62

Abstract: An earth-boring tool includes a cutting element having a first volume of polycrystalline material including catalyst material and a second volume free of catalyst material. A boundary between the first volume and the second volume is nonlinear in a cross-sectional plane that includes a centerline of the cutting element and an anticipated point of contact of the cutting element with the surface of the formation to be cut. Each line tangent the boundary in the cross-sectional plane forms an angle with the centerline of the cutting element greater than the contact back rake angle of the cutting element. In some cutting elements, some portions of the boundary may have another selected shape. Some cutting elements have a boundary wherein tangent lines form angles of greater than 20° with the centerline of the cutting element. Methods of forming wellbores are also disclosed.

公开(公告)号：CA2942530A1

公开(公告)日：2015-09-24

申请号：CA2942530

申请日：2015-03-13

Applicant: BAKER HUGHES INC

Inventor： STOCKEY DAVID A

IPC: E21B10/42 ,  E21B10/46 ,  E21B10/62

Abstract: A cutting element may include a substrate and a volume of polycrystalline diamond material affixed to the substrate at an interface. The volume of polycrystalline diamond may include a front cutting face with at least one substantially planar portion and at least one recess. The at least one recess may extend from a plane defined by the at least one substantially planar portion a first depth into the volume of polycrystalline diamond material in an axial direction parallel to a central axis of the cutting element. The volume of polycrystalline diamond material may comprise a region including a catalyst material. At least one region substantially free of the catalyst material may extend from the at least one substantially planar portion of the front cutting face a second depth into the volume of polycrystalline diamond in the axial direction. Methods of forming cutting elements.