公开(公告)号：EP2449203B1

公开(公告)日：2017-09-27

申请号：EP10794807.7

申请日：2010-07-02

申请人： Baker Hughes Incorporated

发明人： LYONS, Nicholas, J. ,  SCOTT, Dan, E.

IPC分类号： E21B10/46 ,  E21B10/54 ,  E21B10/50 ,  B23K35/36 ,  B24D3/10 ,  C22C26/00

CPC分类号： E21B10/55 ,  B22F2005/001 ,  B23K35/0261 ,  B23K35/24 ,  B23K35/36 ,  B23K35/365 ,  B24D3/10 ,  C22C26/00 ,  E21B10/42 ,  E21B10/46 ,  E21B10/50 ,  E21B10/54 ,  Y10T428/25

公开(公告)号：EP2594728A4

公开(公告)日：2015-06-03

申请号：EP11806310

申请日：2011-07-15

申请人： UNIV SOUTHWEST PETROLEUM

发明人： YANG YING XIN ,  CHEN LIAN ,  LIN MIN ,  PEI ZHU ,  REN HAI TAO

IPC分类号： E21B10/12

CPC分类号： E21B10/16 ,  E21B10/50 ,  E21B10/52

公开(公告)号：EP2153012B1

公开(公告)日：2012-08-15

申请号：EP08755849.0

申请日：2008-05-19

申请人： Baker Hughes Incorporated

发明人： OVERSTREET, James, L. ,  BUSKE, Robert, J. ,  GILMORE, Kenneth, E. ,  MORGAN, Jeremy, K.

IPC分类号： C22C29/06 ,  E21B10/50

CPC分类号： E21B10/50 ,  C22C29/067

摘要： A drill bit (11) having steel teeth (25) is provided with a combination of hardfacing materials (41, 43) on the teeth. The bases of the teeth are hardfaced with nickel-based materials (31) to significantly reduce any potential cracking therein. Portions of the supporting cones adjacent the teeth also may be fabricated with the nickel-based (31) hardfacing. All other portions of the teeth are hardfaced with iron-based materials (33).

公开(公告)号：EP2118329A1

公开(公告)日：2009-11-18

申请号：EP07853447.6

申请日：2007-12-20

申请人： BAKER HUGHES INCORPORATED

发明人： OVERSTREET, James L.

IPC分类号： C22C29/08 ,  E21B10/50

CPC分类号： C23C30/005 ,  B22F2005/001 ,  C22C29/08 ,  C22C45/02 ,  E21B10/50

摘要： A highly abrasive wear metal matrix composite hardfacing material for downhole tools is disclosed. The hardfacing material may comprise a matrix of a softer material with high hardness, such as amorphous nanocomposite steel alloys, and one or more hard component materials. The hard component materials may comprise sintered tungsten carbide, monocrystalline WC, polycrystalline WC, and the additional component of spherical cast tungsten carbide. Alternatively, a matrix of softer material, hard component materials and crushed cast tungsten carbide may be used.

公开(公告)号：EP2044287A1

公开(公告)日：2009-04-08

申请号：EP07836067.4

申请日：2007-07-13

申请人： BAKER HUGHES INCORPORATED

发明人： SMITH, Redd, H. ,  BURGESS, Trevor ,  EASON, Jimmy, W.

IPC分类号： E21B10/50

CPC分类号： E21B10/50 ,  E21B10/46

摘要： An earth-boring bit (11) has a steel body (13) and bearing pin for rotatably supporting a cone. The cone has an exterior surface containing rows of cutting elements. The cone (21) and cutting elements (35) are formed of cemented tungsten carbide. The cone may be manufactured by applying pressure to a mixture of hard particles and metal alloy powder to form a billet, then machining the billet to a desired over-sized conical shaped product. Then the conical-shaped product is liquid-phase sintered to a desired density, which causes shrinking to the desired final shape.

公开(公告)号：EP1097288B1

公开(公告)日：2006-03-15

申请号：EP99933943.5

申请日：1999-07-09

申请人： HALLIBURTON ENERGY SERVICES, INC.

发明人： SAXMAN, William, C.

IPC分类号： E21B10/16 ,  E21B10/50 ,  B23P15/28

CPC分类号： E21B10/50 ,  E21B10/16

摘要： A rotary cone drill bit is provided with at least one cutter cone assembly having a machined cutting structure which will maintain an effective cutting profile despite abrasion, erosion and/or wear of the associated cutting elements. The machined cutting structure may be formed on a generally cone shaped blank by a series of lathe turns and/or plunge cuts. The cutting elements may be formed with an aggressive cutting profile. For one application, the crest of each cutting element has the general configuration of an ogee curve. A layer of hardfacing material may be applied over all or selected portions of the machined cutting structure.

公开(公告)号：EP1070194B1

公开(公告)日：2003-02-12

申请号：EP99907728.2

申请日：1999-03-02

申请人： Weatherford/Lamb, Inc.

发明人： ROBERTSON, Robert ,  BLIZZARD, William, Alan, Jr. ,  WILSON, Timothy, Lee ,  CARTER, Thurman B., Beamer ,  JOHANTGES, Paul, Jeffrey ,  MCCLUNG, Guy, LaMont, III

IPC分类号： E21B29/10

CPC分类号： E21B7/061 ,  E21B10/46 ,  E21B10/50 ,  E21B17/20 ,  E21B21/10 ,  E21B29/06 ,  E21B29/10

摘要： A mill comprising a body (12) and milling material (20), characterised in that said body (12) is flexible. A method of milling using said mill, the method comprising the step of lowering said mill into tubulars in a wellbore across an offset portion thereof, operating said mill to mill at least a portion of said tubulars.

公开(公告)号：EP0774528B1

公开(公告)日：2001-02-28

申请号：EP96302512.7

申请日：1996-04-10

申请人： CAMCO INTERNATIONAL INC.

发明人： Sreshta, Harold A. ,  Drake, Eric F.

IPC分类号： C22C29/06 ,  B22F7/06

CPC分类号： C22C33/0292 ,  B22F7/06 ,  C22C29/067 ,  E21B10/50 ,  Y10T428/1209

公开(公告)号：EP1068425A1

公开(公告)日：2001-01-17

申请号：EP99913511.4

申请日：1999-04-01

申请人： Weatherford/Lamb Inc.

发明人： KUCK, Marc, David ,  BAILEY, Thomas, Floyd ,  JOHNSON, Monte, Ira ,  ROBERTSON, Robert, Eugene ,  CARTER, Thurman, Beamer ,  BLIZZARD, William, Alan ,  SINGLETON, Teme, Forrest ,  ROBERTS, John, Douglas ,  SPIELMAN, William, Allen ,  HAUGEN, David, Michael ,  BARRY, Andrew, Arthur, Whitaker ,  MCCLUNG, Guy, LaMont

IPC分类号： E21B29/06

CPC分类号： E21B7/061 ,  E21B7/10 ,  E21B10/04 ,  E21B10/46 ,  E21B10/50 ,  E21B10/60 ,  E21B12/04 ,  E21B17/02 ,  E21B21/10 ,  E21B23/00 ,  E21B23/01 ,  E21B23/02 ,  E21B23/06 ,  E21B29/06 ,  E21B34/10 ,  E21B34/101 ,  E21B41/0042 ,  E21B44/005 ,  E21B47/091

摘要： A well comprising a primary wellbore (W) and a secondary wellbore (L) leading from said primary wellbore (W) wherein a juncture is formed therebetween, said juncture lined with a tubular member (14) extending from said primary wellbore (W) into said secondary wellbore (L), characterised in that a stabiliser (36, 40) is provided for, in use, stabilising a mill milling an opening in said tubular (14) into said primary wellbore (W). A method for milling an opening in a tubular in a well of the present invention, the method comprising the step of milling an opening in said tubular member whilst being stabilised or guided by said stabiliser. The invention also provides a tubular member, a mill, a stabiliser and a system for milling an opening in a tubular in a well of the invention.

公开(公告)号：EP0753094A4

公开(公告)日：2000-03-08

申请号：EP95915444

申请日：1995-03-31

申请人： DRESSER IND

发明人： BLACKMAN MARK PHILIP ,  BIRD JAY STUART ,  BEATON MICHAEL STEVE

IPC分类号： E21B10/22 ,  E21B10/25 ,  E21B10/50 ,  B23K20/12

CPC分类号： E21B10/25 ,  E21B10/50

摘要： A rotary cone drill bit (10) having a number of angularly-spaced arms (21) integrally formed with a body (19), each arm (21) having a spindle (23) and an outer shirttail surface (25). Each spindle (23) has a generally cylindrical upper end portion and an inner sealing surface. A number of rotary cone cutters (11) equal to the number of arms (21) are mounted on respective spindles (23). Each cutter includes an internal cylindrical wall, a gap (41) with a generally cylindrical portion defined between the spindle (23) and cavity wall, an outer sealing surface and a seal element (43) spanning the gap (41) and sealing between the inner and outer sealing surfaces. The cutters (11) are preferably composites formed from different types of material.