公开(公告)号：DE602007008141D1

公开(公告)日：2010-09-09

申请号：DE602007008141

申请日：2007-11-05

Applicant: BAKER HUGHES INC

Inventor： CHOE HEMAN ,  STEVENS JOHN H ,  OVERSTREET JAMES L ,  WESTHOFF JAMES C ,  EASON JIMMY W

IPC: E21B10/42 ,  E21B10/20

公开(公告)号：NZ550670A

公开(公告)日：2010-08-27

申请号：NZ55067005

申请日：2005-04-28

Applicant: TDY IND INC ,  BAKER HUGHES INC

Inventor： MIRCHANDANI PRAKASH K ,  EASON JIMMY W ,  OAKES JAMES J ,  WESTHOFF JAMES C ,  COLLINS GABRIEL B ,  STEVENS JOHN H ,  MOSCO ALFRED J ,  CALDWELL STEVEN G

IPC: E21B10/46 ,  C22C1/10 ,  C22C29/00 ,  C22C29/06 ,  E21B10/00

Abstract: A bit body, roller cone, insert roller cone, or cone for an earth-boring bit is disclosed. The bit body, roller cone, insert roller cone, or cone for an earth-boring bit comprises a body material which comprises hard particles having at least one of a carbide, a nitride, a boride, a silicide, an oxide, and solid solutions thereof, and a binder. The binder comprises at least one metal selected from cobalt, nickel, iron and alloys thereof, and at least one melting point reducing constituent selected from at least one of a transition metal carbide up to 60 weight percent, a transition metal boride up to 60 weight percent, and a transition metal silicide up to 60 weight percent, wherein the weight percentages are based on the total weight of the binder, and where the binder has a melting point in the range of 1050°C to 1350°C.

公开(公告)号：CA2694332A1

公开(公告)日：2009-02-05

申请号：CA2694332

申请日：2008-07-31

Applicant: BAKER HUGHES INC

Inventor： LYONS NICHOLAS J ,  EASON JIMMY W ,  SMITH REDD H ,  STEVENS JOHN H

IPC: B22F7/06 ,  E21B10/567

Abstract: Methods for forming earth-boring tools include providing a metal or metal alloy bonding agent at an interface between a first element and a second element and sintering the first element, the second element, and the boding agent to form a bond between the first element and the second element at the interface. The methods may be used, for example, to bond together portions of a body of an earth-boring tool (which may facilitate, for example, the formation of cutting element pockets) or to bond cutting elements to a body of an earth-boring tool (e.g., a bit body of a fixed-cutter earth-boring drill bit or a cone of a roller cone earth-boring drill bit). At least partially formed earth-boring tools include a metal or metal alloy bonding agent at an interface between two or more elements, at least one of which may comprise a green or brown structure.

公开(公告)号：CA2673112A1

公开(公告)日：2008-06-19

申请号：CA2673112

申请日：2007-12-07

Applicant: BAKER HUGHES INC

Inventor： STEVENS JOHN H ,  SMITH REDD H

IPC: E21B10/42

Abstract: Earth-boring rotary drill bits including a bit body (44) attached to a sh ank (48). In some embodiments, the bit body and the shank may have abutting surfaces (54, 56) concentric to an interface axis (A1) offset relative to a longitudinal axis (L42) of the drill bit. In additional embodiments, the bit body and the shank may have generally frustoconical abutting surfaces (98, 100). Methods for attaching a shank and a bit body of an earth-boring rotary drill bit include abutting a surface of a shank against a surface of a bit body, and causing the abutting surfaces to be concentric to an axis that is offset or shifted relative to a longitudinal axis of the drill bit.

公开(公告)号：CA2668416A1

公开(公告)日：2008-05-15

申请号：CA2668416

申请日：2007-11-05

Applicant: BAKER HUGHES INC

Inventor： STEVENS JOHN H ,  OVERSTREET JAMES L ,  CHOE HEMAN ,  WESTHOFF JAMES C ,  EASON JIMMY W

IPC: E21B10/42 ,  E21B10/20

Abstract: Earth-boring rotary drill bits include bit bodies comprising a composite material including a plurality of hard phase regions or particles dispersed throughout a titanium or titanium-based, alloy matrix material. The bits fur ther include a cutting structure disposed on a face of ' the bit body. Metho ds for forming such drill bits include at least partially sintering a plural ity of hard particles and a plurality of particles comprising titanium or a titanium-based alloy material to form a bit body comprising a particle-matri x composite material. A.shank may be attached directly to the bit body.

公开(公告)号：CA2630433A1

公开(公告)日：2007-05-24

申请号：CA2630433

申请日：2006-11-15

Applicant: BAKER HUGHES INC

Inventor： CURRY DAVID A ,  STEVENS JOHN H ,  SULLIVAN ERIC C ,  EASON JIMMY W ,  OVERSTREET JAMES L

IPC: E21B10/46 ,  B23K35/30 ,  C22C38/22 ,  C23C30/00

Abstract: An earth-boring bit, and a method of increasing the durability of the same, which includes the step providing a pliable sheet of a hardfacing matrix material. The pliable sheet of hardfacing material has a nickel and chromium matrix combined with a first element. The first element is selected from a group consisting of spherical sintered tungsten carbide, spherical cast tungsten carbide, and metallic glass. The hardfacing matrix material sheet is placed on a preselected surface of the drill bit. The hardfacing matrix material sheet is then fusion bonded to the drill bit.

公开(公告)号：CA2909082A1

公开(公告)日：2014-10-16

申请号：CA2909082

申请日：2014-04-07

Applicant: BAKER HUGHES INC

Inventor： MUKHERJEE SOMESH KUMAR ,  SISTA VIVEKANAND ,  STEVENS JOHN H

IPC: C23C30/00 ,  C22C1/05

Abstract: A composite includes a porous matrix that includes a molybdenum-silicon-boron (Mo-Si-B) alloy that has a plurality of pores with a lubricant in contact with the Mo-Si-B alloy, a hydrophobic compound in contact with the Mo-Si-B alloy, or a combination thereof. A method for preparing a porous composite includes disposing a porous matrix comprising a Mo-Si-B alloy on a substrate, the Mo-Si-B alloy comprising a plurality of pores; disposing a lubricant on a surface of the porous matrix; and disposing a hydrophobic compound on a surface of the porous matrix to form the porous composite.

公开(公告)号：CA2695581C

公开(公告)日：2013-07-16

申请号：CA2695581

申请日：2008-08-13

Applicant: BAKER HUGHES INC

Inventor： STEVENS JOHN H ,  LYONS NICHOLAS J

IPC: E21B10/43

Abstract: Methods of forming cutting element pockets in blades of earth-boring tools include forming a first recess and a second recess intersecting at a location defining the a back of the pocket using a cutter oriented in a manner so as to avoid tool path interference with adjacent blades. A filler material is disposed in the second recess to the location of the back of the pocket. Earth-boring tools having such cutting element pockets are also disclosed.

公开(公告)号：MX2012013456A

公开(公告)日：2013-05-01

申请号：MX2012013456

申请日：2011-05-19

Applicant: BAKER HUGHES INC

Inventor： STEVENS JOHN H

IPC: B22D19/06 ,  B22D19/16 ,  C22C1/02 ,  C22C1/10 ,  E21B10/08

Abstract: Métodos para formar por lo menos una porción de una herramienta de perforación terrestre incluyen proporcionar materia en partículas que comprende un material duro en una cavidad de molde, fundir un metal y el material duro para formar una composición fundida que comprende una composición eutéctica o casi eutéctica del metal y del material duro, vaciar la composición fundida para formar por lo menos una porción de una herramienta de perforación terrestre dentro de la cavidad de molde y proporcionar un inoculante dentro de la cavidad de molde. Métodos para formar un cono de rodillo de una barrena de perforación giratoria terrestre comprende formar una composición fundida, vaciar la composición fundida dentro de una cavidad de molde, solidificar la composición fundida para formar el cono de rodillo y controlar el crecimiento de grano utilizando un inoculante conforme la composición fundida se solidifica. Se fabrican artículos que comprenden componentes de herramientas de perforación terrestre utilizando tales métodos.

公开(公告)号：MX2012013455A

公开(公告)日：2013-05-01

申请号：MX2012013455

申请日：2011-05-19

Applicant: BAKER HUGHES INC

Inventor： EASON JIMMY W ,  STEVENS JOHN H

IPC: B22D19/06 ,  B22D19/16 ,  C22C1/02 ,  C22C1/10 ,  E21B10/08

Abstract: Métodos para formar por lo menos una porción de una herramienta de perforación terrestre incluyen proporcionar por lo menos una inserción en una cavidad de molde, proporcionar una materia en partículas en la cavidad de molde, fundir un metal y el material duro para formar una composición fundida, y vaciar la composición fundida. Otros métodos incluyen recubrir por lo menos una superficie de una cavidad de molde con un material de recubrimiento que tiene una composición que difiere de una composición del molde, fundir un metal y un material duro para formar una composición fundida, y vaciar la composición fundida. Los artículos que comprenden por lo menos una porción de una herramienta de perforación terrestre incluyen por lo menos una inserción y una composición eutéctica o casi eutéctica solidificada que incluye una fase de metal y una fase de material duro. Otros artículos incluyen una composición eutéctica o casi eutéctica solidificada incluyendo una fase de metal y una fase de material duro y un material de recubrimiento en contacto con la composición eutéctica o casi eutéctica solidificada.