公开(公告)号：CA2813446A1

公开(公告)日：2012-04-05

申请号：CA2813446

申请日：2011-09-30

Applicant: BAKER HUGHES INC ,  ELEMENT SIX LTD

Inventor： FLORES ALEJANDRO ,  DICK AARON J ,  LIN CHIH ,  BRADFORD JOHN F ,  VAN STADEN LOUISE F ,  SWANEPOEL GREGORY B ,  VAN DER RIET CLEMENT D ,  WAI SIU-WAH ,  VUKOVIC DRAGAN ,  TANK KLAUS

IPC: E21B10/22 ,  E21B10/24

Abstract: Bearings for downhole tools including a first bearing member and a second bearing member, at least one of the first and second bearing members having a channel formed therein. Methods of cooling bearings of downhole tools comprise flowing a fluid within a channel formed in at least one bearing member. Heat is transferred from at least the at least one bearing member to the fluid. The fluid is flowed away from the at least one bearing member.

公开(公告)号：GB2381020B

公开(公告)日：2005-09-28

申请号：GB0221634

申请日：2002-09-17

Applicant: BAKER HUGHES INC

Inventor： LIN CHIH ,  KOLTERMANN TERRY ,  SCOTT DANNY E

IPC: E21B10/22 ,  E21B10/25 ,  F16J15/34

Abstract: An earth-boring bit has a mechanical face seal assembly with PCD faces. The bit has a bearing shaft with a cone rotatably mounted on the bearing shaft. The seal locates between the bearing shaft and the cone for sealing lubricant therein. The seal includes at least one rigid seal ring having a cemented carbide body and an annular PCD face located on it. The mating face may also be of a PCD material. The cemented carbide body contains a binder that migrates into the PCD face while the PCD face is being formed. A binder-free region is leached on the surface of the PCD face.

公开(公告)号：ITTO20020815A1

公开(公告)日：2003-04-19

申请号：ITTO20020815

申请日：2002-09-19

Applicant: BAKER HUGHES INC

Inventor： KOLTERMANN TERRY ,  LIN CHIH ,  SCOTT DANNY E

IPC: E21B10/00 ,  E21B10/22 ,  E21B10/25 ,  F16J15/34

公开(公告)号：ITTO20010452D0

公开(公告)日：2001-05-15

申请号：ITTO20010452

申请日：2001-05-15

Applicant: BAKER HUGHES INC

Inventor： SULLIVAN ERIC CHARLES ,  ZALESKI THEODORE EDWARD JR ,  SCHMIDT SCOTT RAY ,  NGUYEN DON QUY ,  ZAPRADA GLENN R ,  LIN CHIH

公开(公告)号：GB2316110B

公开(公告)日：2001-01-03

申请号：GB9716538

申请日：1997-08-05

Applicant: BAKER HUGHES INC

Inventor： LIN CHIH

IPC: E21B10/22 ,  E21B10/25

Abstract: An earth-boring bit has a bit body, at least one cantilevered bearing shaft, including a base and a cylindrical journal bearing surface extending inwardly and downwardly from the bit body, and at least one cutter mounted for rotation on the cylindrical journal bearing surface of the bearing shaft. A seal assembly is disposed between the cylindrical journal bearing surface and the cutter proximally to the base of the cantilevered bearing shaft. The seal assembly includes at least one rigid seal ring having a seal face in contact with a second seal face. A selected one of the seal faces is at least partially formed of a hard ceramic type material with the other seal face being formed of a relatively softer material to provide improved wear resistance for the seal assembly.

公开(公告)号：GB2316110A

公开(公告)日：1998-02-18

申请号：GB9716538

申请日：1997-08-05

Applicant: BAKER HUGHES INC

Inventor： LIN CHIH

IPC: E21B10/22 ,  E21B10/25

Abstract: An earth-boring bit has a bit body, at least one cantilevered bearing shaft 31, including a base and a cylindrical journal bearing surface extending inwardly and downwardly from the bit body, and at least one cutter 33 mounted for rotation on the cylindrical journal bearing surface of the bearing shaft 31. A seal assembly 42 is disposed between the cylindrical journal bearing surface and the cutter proximally to the base of the cantilevered bearing shaft. The seal assembly 42 includes at least one rigid seal ring 52,60 having a seal face 56 in contact with a second seal face 58. A selected one of the seal faces 56,58 is at least partially formed of a hard ceramic type material with the other seal face being formed of a relatively softer material to provide improved wear resistance for the seal assembly.

公开(公告)号：ZA201303343B

公开(公告)日：2014-06-25

申请号：ZA201303343

申请日：2013-05-08

Applicant: BAKER HUGHES INC ,  ELEMENT SIX LTD ,  ELEMENT SIX GMBH

Inventor： DICK AARON J ,  KOLTERMANN TERRY J ,  SCOTT DANNY E ,  VAN STADEN LOUISE FRANCES ,  FRIES ROBERT ,  CURRY DAVID A ,  LIN CHIH ,  ZAHRADNIK ANTON F ,  FLYNN GERALD FRANCIS

IPC: F04B20060101 ,  E21B20060101 ,  F16C20060101

Abstract: Downhole tool bearings are provided with diamond enhanced materials. The diamond enhanced materials comprise diamond grains in a matrix of tungsten or silicon carbide or a silicon bonded diamond material. A brazed diamond grit or diamond particles coated with a reactive braze may be utilized for bearing applications. Bearing rings for use in downhole tools may be formed at least in part with the diamond enhanced material. In one embodiment, the bearing rings may be used in a positive displacement motor. In additional embodiments, the bearing rings may be used in a submersible pump.

公开(公告)号：SG189178A1

公开(公告)日：2013-05-31

申请号：SG2013023817

申请日：2011-09-30

Applicant: BAKER HUGHES INC ,  ELEMENT SIX LTD

Inventor： FLORES ALEJANDRO ,  DICK AARON J ,  LIN CHIH ,  BRADFORD JOHN F ,  VAN STADEN LOUISE F ,  SWANEPOEL GREGORY B ,  VAN DER RIET CLEMENT D ,  WAI SIU-WAH ,  VUKOVIC DRAGAN ,  TANK KLAUS

Abstract: Bearings for downhole tools including a first bearing member and a second bearing member, at least one of the first and second bearing members having a channel formed therein. Methods of cooling bearings of downhole tools comprise flowing a fluid within a channel formed in at least one bearing member. Heat is transferred from at least the at least one bearing member to the fluid. The fluid is flowed away from the at least one bearing member.

公开(公告)号：CA2771227A1

公开(公告)日：2011-03-10

申请号：CA2771227

申请日：2010-08-19

Applicant: BAKER HUGHES INC

Inventor： LIN CHIH ,  DICK AARON J

IPC: E21B10/22 ,  E21B10/25 ,  E21B10/50

Abstract: The present invention relates to a method and apparatus for forming a dynamic seal between two surfaces (136, 140). More specifically, the invention relates to creating a textured surface (166) with a thin, hard coating (176) on a metallic annular sealing ring (170) such as the sealing ring used in an earth boring drill bit (100).

公开(公告)号：DE602005014385D1

公开(公告)日：2009-06-18

申请号：DE602005014385

申请日：2005-12-02

Applicant: BAKER HUGHES INC

Inventor： LIN CHIH ,  SULLIVAN ERIC CHARLES

IPC: E21B10/22 ,  E21B10/24

Abstract: An earth boring bit has sliding engaging surfaces between a cone assembly and a bearing pin. Micropores are formed in at least one of the engaging surfaces. Each of the micropores has a leading portion and a trailing portion. The leading portion is at a more gradual slope than the trailing portion. The micropores are located in a pattern of a greater density in a region of the engaging surfaces that operate at higher pressures than in other regions.