公开(公告)号：US20190128072A1

公开(公告)日：2019-05-02

申请号：US16175920

申请日：2018-10-31

申请人： Smith International, Inc.

发明人： Anthony Griffo ,  Madapusi K. Keshavan ,  Youhe Zhang

IPC分类号： E21B10/54 ,  B33Y70/00 ,  B33Y80/00 ,  C22C32/00 ,  B23K15/00

摘要： A downhole cutting tool includes a tool body with a cutting element or cutting element pocket thereon. At least a portion of the tool body or an attachment thereto is a metal matrix composite formed from metal carbide particles dispersed in a continuous metal matrix. The metal carbide particles make up less than 45 wt % of the metal matrix composite and/or less than 30 vol % of the metal matrix composite. The continuous metal matrix may also be formed from a metal or metal alloy other than Ni—Si—B and/or have a transverse rupture strength greater than 150 ksi and a fracture toughness over 22 ksi*in0.5.

公开(公告)号：US20190071931A1

公开(公告)日：2019-03-07

申请号：US15555942

申请日：2017-05-01

申请人： Diapac LLC

发明人： Zhongming WANG ,  Andrew BELL ,  Robert HORSWELL ,  Ramamurthy VISWANADHAM

IPC分类号： E21B10/54 ,  C22C29/08 ,  B22D19/14 ,  B22D19/06

摘要： A drill bit comprising a body that includes a metal matrix composite (MMC). The MMC comprises a mixture comprising a plurality of particles and another plurality of particles, wherein each of the other plurality of particles is softer than each of the plurality of particles. The MMC comprises a metallic binding material that is metallurgically bonded to each of the plurality of particles and the other plurality of particles.

公开(公告)号：US20190032413A1

公开(公告)日：2019-01-31

申请号：US15663515

申请日：2017-07-28

申请人： Baker Hughes, a GE company, LLC

发明人： John Abhishek Raj Bomidi ,  Jon David Schroder ,  William A. Moss, JR. ,  Alexander Rodney Boehm ,  Kegan L. Lovelace

IPC分类号： E21B10/54 ,  E21B10/43

CPC分类号： E21B10/54 ,  E21B10/43 ,  E21B10/567 ,  E21B10/573

摘要： Rotatable cutting elements for earth-boring tools may include a substrate and a polycrystalline, superabrasive material secured to an end of the substrate. A sleeve may be sized and shaped to circumferentially surround at least a portion of the substrate. Rollers may be sized and shaped for positioning between, and making rolling contact with, the substrate and the sleeve, the rollers configured to rotate relative to the substrate and the sleeve and to enable the substrate to rotate relative to the sleeve. The rollers may be configured to bear at least radial forces acting on the substrate and the sleeve.

公开(公告)号：US20190032410A1

公开(公告)日：2019-01-31

申请号：US15662626

申请日：2017-07-28

申请人： Baker Hughes, a GE company, LLC

发明人： William A. Moss, JR. ,  Alexander Rodney Boehm ,  Jon David Schroder ,  Kegan L. Lovelace ,  John Abhishek Raj Bomidi

IPC分类号： E21B10/32 ,  E21B10/62 ,  E21B10/54

摘要： Rotatable elements for use with earth-boring tools include a movable element and a stationary element. The movable element and stationary element include an index positioning feature that is configured to rotate the movable element as the movable element moves between a first axial position and a second axial position.

公开(公告)号：US20180326541A1

公开(公告)日：2018-11-15

申请号：US16035424

申请日：2018-07-13

申请人： Halliburton Energy Services, Inc.

发明人： Garrett T. Olsen

IPC分类号： B23K35/02 ,  E21B10/54 ,  E21B10/50 ,  B22F1/00 ,  B23K35/32 ,  B82Y30/00 ,  C04B35/52 ,  C04B35/56 ,  C04B35/563 ,  C04B35/565 ,  C04B35/5831 ,  C04B35/584 ,  C22C29/06 ,  C22C29/08 ,  E21B10/46 ,  C22C32/00 ,  C22C29/16 ,  C22C29/12 ,  C22C29/10 ,  B23K103/16 ,  B22F5/00 ,  C22C33/02 ,  C22C1/04

CPC分类号： B23K35/0261 ,  B22F1/0011 ,  B22F1/0014 ,  B22F1/0018 ,  B22F1/0025 ,  B22F1/004 ,  B22F1/0048 ,  B22F1/0051 ,  B22F2001/0029 ,  B22F2005/001 ,  B23K35/327 ,  B23K2103/16 ,  B82Y30/00 ,  C04B35/52 ,  C04B35/5607 ,  C04B35/5611 ,  C04B35/5626 ,  C04B35/563 ,  C04B35/565 ,  C04B35/5831 ,  C04B35/584 ,  C04B2235/427 ,  C04B2235/5427 ,  C04B2235/5436 ,  C04B2235/5445 ,  C04B2235/5454 ,  C04B2235/5472 ,  C22C1/0433 ,  C22C29/062 ,  C22C29/065 ,  C22C29/08 ,  C22C29/10 ,  C22C29/12 ,  C22C29/16 ,  C22C32/0015 ,  C22C32/0026 ,  C22C32/0052 ,  C22C32/0057 ,  C22C32/0063 ,  C22C32/0068 ,  C22C32/0084 ,  C22C33/02 ,  E21B10/46 ,  E21B10/50 ,  E21B10/54

摘要： A hard composite composition may comprise a binder and a polymodal blend of matrix powder. The polymodal blend of matrix powder may have at least one first local maxima at a particle size of about 0.5 nm to about 30 μm, at least one second local maxima at a particle size of about 200 μm to about 10 mm, and at least one local minima between a particle size of about 30 μm to about 200 μm that has a value that is less than the first local maxima.

公开(公告)号：US10071355B2

公开(公告)日：2018-09-11

申请号：US14409750

申请日：2013-06-18

申请人： Element Six Abrasives S.A. ,  Element Six Limited

发明人： Bo Christer Olofsson ,  Cornelis Roelof Jonker ,  Roger William Nigel Nilen ,  Stig Ake Andersin ,  John James Barry

IPC分类号： B01J3/06 ,  B24D18/00 ,  B22F3/00 ,  B22F3/12 ,  B22F3/14 ,  B22F7/06 ,  C22C26/00 ,  E21B10/567 ,  E21B10/573 ,  B24D3/00 ,  E21B10/54 ,  B22F3/24 ,  B22F5/00 ,  E21B10/56

CPC分类号： B01J3/06 ,  B22F3/003 ,  B22F3/12 ,  B22F3/1208 ,  B22F3/14 ,  B22F7/06 ,  B22F2003/247 ,  B22F2005/001 ,  B22F2999/00 ,  B24D3/00 ,  B24D18/00 ,  C22C26/00 ,  E21B10/54 ,  E21B10/5673 ,  E21B10/5735 ,  E21B2010/566 ,  B22F3/17

摘要： A method of making a cutter structure (1) comprises placing a pre-formed body (4) of hard material having a surface topography in a canister, placing an aggregated mass of grains of superhard material (2) over said surface topography, placing a punch (10) in contact with the superhard material (2), the punch (10) having a surface with a surface topography inverse to that of the hard material body to imprint a pattern in the superhard material (2) complementary to the surface topography of the punch (10). The surface of the punch (10) contacting the superhard material (2) being formed of a ceramic material that does not react chemically with the superhard material (12) and/or a sinter catalyst for the superhard material (2). A pressure of greater than 3 GPa is then together with a temperature sufficiently high for the catalyst to melt to form the cutter structure (1) with a layer of polycrystalline superhard material bonded to the hard material and having a surface topography corresponding to the surface topography of the hard material.

公开(公告)号：US10006252B2

公开(公告)日：2018-06-26

申请号：US14410071

申请日：2013-05-27

申请人： KOREA INSTITUTE OF INDUSTRIAL TECHNOLOGY

发明人： Jung Woo Cho ,  Dae Young Shin ,  Jin Seok Yang ,  Kyoung Il Moon ,  Ki Beom Kwon ,  Chang Heon Song ,  Joo Young Oh

IPC分类号： E21B10/36 ,  E21B10/56 ,  E21B10/43 ,  E21B10/54 ,  E21B10/46

CPC分类号： E21B10/56 ,  E21B10/36 ,  E21B10/43 ,  E21B10/46 ,  E21B10/54

摘要： A drill bit including a button array having different radii extending from the center of a head section, and more particularly, to a drill bit in which buttons are arranged so as to have different radii from the center of a drill bit head section, thereby striking bedrock points having different radii and improving the efficiency of a drilling operation.

公开(公告)号：US20180171427A1

公开(公告)日：2018-06-21

申请号：US15571098

申请日：2015-12-18

申请人： Halliburton Energy Services, Inc.

发明人： Venkkateesh Parthasarathi Padmarekha ,  Grant O. Cook, III ,  Daniel Brendan Voglewede

IPC分类号： C21D9/22 ,  E21B10/54 ,  E21B10/42 ,  C21D1/06 ,  C21D1/18

摘要： The disclosure provides downhole tools with shaft regions that are hardened by a compressive residual stress created when an allotropic material in a precursor region transforms from a first allotrope to a second allotrope in response to heat, while continuing to occupy the same physical space. The disclosure further provides methods of forming such downhole tools.

公开(公告)号：US10000975B2

公开(公告)日：2018-06-19

申请号：US14764088

申请日：2014-01-28

申请人： NOV Downhole Eurasia Limited

发明人： Alan Honggen Jiang ,  Mark Jonathan Francis ,  Terry Matthias ,  Haydn G. Smith

IPC分类号： E21B10/567 ,  E21B10/54 ,  E21B10/56

CPC分类号： E21B10/567 ,  E21B10/54 ,  E21B10/5673 ,  E21B2010/561

摘要： A cutting element comprises a table of superhard material bonded to a substrate, wherein the table defines a cutting edge and has a chamfered peripheral edge, and a groove in a sidewall of the cutting element passes through the chamfered peripheral edge, so as to reduce the depth of the chamfer at the location of the groove.

公开(公告)号：US09869130B2

公开(公告)日：2018-01-16

申请号：US14684018

申请日：2015-04-10

申请人： Varel International Ind., L.P.

发明人： Karl Wayne Rose ,  Timothy Anderson ,  Kevin Wayne Schader

IPC分类号： E21B10/43 ,  E21B10/46 ,  E21B10/55 ,  E21B10/42 ,  E21B10/54

CPC分类号： E21B10/43 ,  E21B10/42 ,  E21B10/46 ,  E21B10/54 ,  E21B10/55 ,  E21B2010/425

摘要： A drill bit for drilling a hole in an earth formation includes a bit body and a blade extending from the bit body. The blade has a leading section, a top section, and a plurality of transition sections extending between the leading section and the top section. The drill bit further includes a plurality of cutters. Each cutter is positioned in a respective cutter pocket formed in the blade. Each cutter extends beyond the top section of the blade, and each transition section of the blade is between adjacent cutter pockets. The drill bit further includes a plurality of abrasion resistant inserts. Each abrasion resistant insert is positioned in a respective insert pocket formed in the blade. The plurality of abrasion resistant inserts are designed to cut into an earth formation. At least a portion of each abrasion resistant insert is disposed at a respective transition section of the blade.