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1. 发明申请

WO2008112262B1 METHOD OF FORMING POCKETS FOR RECEIVING DRILL BIT CUTTING ELEMENTS 审中-公开
标题翻译：形成用于接收钻头切削元件的口袋的方法
公开(公告)号：WO2008112262B1
公开(公告)日：2008-11-20
申请号：PCT/US2008003302
申请日：2008-03-12
申请人： BAKER HUGHES INC , DUGGAN JAMES L , STEVENS JOHN H , SMITH REDD H
发明人： DUGGAN JAMES L , STEVENS JOHN H , SMITH REDD H
IPC分类号： E21B10/573 , E21B10/55
CPC分类号： E21B10/55 , E21B10/573
摘要： Methods of forming cutting element pockets in earth-boring tools include machining at least one recess (52) to define at least one surface of a cutting element pocket using a cutter (56) oriented at an angle to a longitudinal axis of the cutting element pocket. Methods of forming earth-boring tools include forming a bit body (50) and forming at least one cutting element pocket therein using a rotating cutter oriented at an angle relative to a longitudinal axis (60) of the cutting element pocket being formed. Earth-boring tools have a bit body comprising a first surface defining a lateral sidewall (55) of a cutting element pocket, a second surface defining an end wall (66) of the cutting element pocket, and another surface defining a groove located between the first and second surfaces that extends into the body to enable a cutting element (18) to abut against an area of the lateral sidewall and end wall of the pocket.
摘要翻译：在钻地工具中形成切割元件凹穴的方法包括使用切割器（56）来加工至少一个凹部（52）以限定切割元件凹部的至少一个表面，该切割器（56）以与切割元件凹部的纵向轴线。形成钻地工具的方法包括形成钻头体（50）并使用相对于正在形成的切削元件凹穴的纵向轴线（60）定向的旋转切割器在其中形成至少一个切削元件凹穴。钻地工具具有钻头本体，钻头本体包括限定切割元件凹穴的侧向侧壁（55）的第一表面，限定切割元件凹穴的端壁（66）的第二表面以及限定位于第一表面和第二表面，所述第一表面和第二表面延伸到所述主体中以使得切割元件（18）能够邻接所述袋的横向侧壁和端壁的区域。

2. 发明专利

CA2679749A1 METHOD OF FORMING POCKETS FOR RECEIVING DRILL BIT CUTTING ELEMENTS 未知
公开(公告)号：CA2679749A1
公开(公告)日：2008-09-18
申请号：CA2679749
申请日：2008-03-12
申请人： BAKER HUGHES INC
发明人： SMITH REDD H , DUGGAN JAMES L , STEVENS JOHN H
IPC分类号： E21B10/573 , E21B10/55
摘要： Methods of forming cutting element pockets in earth-boring tools include machining at least one recess (52) to define at least one surface of a cutti ng element pocket using a cutter (56) oriented at an angle to a longitudinal axis of the cutting element pocket. Methods of forming earth-boring tools i nclude forming a bit body (50) and forming at least one cutting element pock et therein using a rotating cutter oriented at an angle relative to a longit udinal axis (60) of the cutting element pocket being formed. Earth-boring to ols have a bit body comprising a first surface defining a lateral sidewall ( 55) of a cutting element pocket, a second surface defining an end wall (66) of the cutting element pocket, and another surface defining a groove located between the first and second surfaces that extends into the body to enable a cutting element (18) to abut against an area of the lateral sidewall and e nd wall of the pocket.

3. 发明专利

CA2630914C EARTH-BORING ROTARY DRILL BITS AND METHODS OF MANUFACTURING EARTH-BORING ROTARY DRILL BITS HAVING PARTICLE-MATRIX COMPOSITE BIT BODIES 未知
公开(公告)号：CA2630914C
公开(公告)日：2012-08-14
申请号：CA2630914
申请日：2006-11-10
申请人： BAKER HUGHES INC
发明人： SMITH REDD H , STEVENS JOHN H , DUGGAN JAMES L , LYONS NICHOLAS J , EASON JIMMY W , GLADNEY JARED D , OXFORD JAMES A , CHREST BENJAMIN J
IPC分类号： B22F3/12 , C22C29/00 , E21B10/00
摘要： Methods of forming bit bodies for earth-boring bits include assembling green components, brown components, or fully sintered components, and sintering the assembled components. Other methods include isostatically pressing a powder to form a green body substantially composed of a particle-matrix composite material, and sintering the green body to provide a bit body having a desired final density. Methods of forming earth-boring bits include providing a bit body (52) substantially formed of a particle-matrix composite material and attaching a shank to the body. The body is provided by pressing a powder to form a green body and sintering the green body. Earth-boring bits include a unitary structure substantially formed of a particle-matrix composite material . The unitary structure includes a first region configured to carry cutters and a second region that includes a threaded pin. Earth-boring bits include a shank attached directly to a body substantially formed of a particle-matrix composite material.

4. 发明专利

PL2129860T3 Sposób formowania zagłębień do przyjmowania elementów tnących świdra 未知
公开(公告)号：PL2129860T3
公开(公告)日：2012-03-30
申请号：PL08726771
申请日：2008-03-12
申请人： BAKER HUGHES INC
发明人： DUGGAN JAMES L , STEVENS JOHN H , SMITH REDD H
IPC分类号： E21B10/573 , E21B10/55

5. 发明专利

CA2630914A1 EARTH-BORING ROTARY DRILL BITS AND METHODS OF MANUFACTURING EARTH-BORING ROTARY DRILL BITS HAVING PARTICLE-MATRIX COMPOSITE BIT BODIES 未知
公开(公告)号：CA2630914A1
公开(公告)日：2007-05-24
申请号：CA2630914
申请日：2006-11-10
申请人： BAKER HUGHES INC
发明人： STEVENS JOHN H , DUGGAN JAMES L , LYONS NICHOLAS J , EASON JIMMY W , GLADNEY JARED D , SMITH REDD H , CHREST BENJAMIN J , OXFORD JAMES A
IPC分类号： B22F3/12 , C22C29/00 , E21B10/00
摘要： Methods of forming bit bodies for earth-boring bits include assembling green components, brown components, or fully sintered components, and sintering th e assembled components. Other methods include isostatically pressing a powder to form a green body substantially composed of a particle-matrix composite material, and sintering the green body to provide a bit body having a desire d final density. Methods of forming earth-boring bits include providing a bit body (52) substantially formed of a particle-matrix composite material and attaching a shank to the body. The body is provided by pressing a powder to form a green body and sintering the green body. Earth-boring bits include a unitary structure substantially formed of a particle-matrix composite materi al . The unitary structure includes a first region configured to carry cutters and a second region that includes a threaded pin. Earth-boring bits include a shank attached directly to a body substantially formed of a particle-matrix composite material.

6. 发明专利

GB2369140A Steel body drill bits with tailored hardfacing structural elements 未知
公开(公告)号：GB2369140A
公开(公告)日：2002-05-22
申请号：GB0126428
申请日：2001-11-02
申请人： BAKER HUGHES INC
发明人： COSTO JR ROBERT J , OVERSTREET JAMES L , ZAHRADNIK ANTON F , DUGGAN JAMES L , SMITH RUSSEL S , MORRIS MARK E
IPC分类号： E21B10/54 , E21B10/46
摘要： Hardfacing 41 deposited on PDC-equipped steel body rotary drag bit 10 forms substantially protruding structural elements, such as wear knots 40 or chip breakers (50, figures 5 and 6). Hardfacing 84, 86 may also be applied to features such a gage pads 80, wherein at least two different hardfacing compositions are utilised and specifically located in order to exploit the material characteristics of each type of hardfacing composition employed. The use of multiple hardfacing compositions may further be employed as a wear-resistant coating 70, 72, 74 on various elements of the drill bit 10. The surfaces to which hardfacing is applied may include machined slots, cavities or grooves providing increased surface area for application of the hardfacing. Additionally, such surface features may serve to effect a desired stress state in the resultant hardfacing layer or other structure.

7. 发明专利

GB2369140B Steel body drill bits with tailored hardfacing structural elements 未知
公开(公告)号：GB2369140B
公开(公告)日：2003-06-11
申请号：GB0126428
申请日：2001-11-02
申请人： BAKER HUGHES INC
发明人： COSTO JR ROBERT J , OVERSTREET JAMES L , ZAHRADNIK ANTON F , DUGGAN JAMES L , SMITH RUSSEL S , MORRIS MARK E
IPC分类号： E21B10/54 , E21B10/46
摘要： Hardfacing is deposited on a PDC-equipped steel body rotary drag bit and forms substantially protruding structural elements, such as wear knots or chip breakers. Hardfacing may also be applied to features such as gage pads, wherein at least two different hardfacing compositions are utilized and specifically located in order to exploit the material characteristics of each type of hardfacing composition employed. The use of multiple hardfacing compositions may further be employed as a wear-resistant coating on various elements of the drill bit. The surfaces to which hardfacing is applied may include machined slots, cavities or grooves providing increased surface area for application of the hardfacing. Additionally, such surface features may serve to effect a desired residual stress state in the resultant hardfacing layer or other structure.

8. 发明专利

ITTO20011027A1 未知
公开(公告)号：ITTO20011027A1
公开(公告)日：2003-04-28
申请号：ITTO20011027
申请日：2001-10-26
申请人： BAKER HUGHES INC
发明人： ZAHRADNIK ANTON F , OVERSTREET JAMES L , MORRIS MARK E , COSTO ROBERT J JR , DUGGAN JAMES L , SMITH RUSSEL S
IPC分类号： E21B10/54
摘要： Hardfacing is deposited on a PDC-equipped steel body rotary drag bit and forms substantially protruding structural elements, such as wear knots or chip breakers. Hardfacing may also be applied to features such as gage pads, wherein at least two different hardfacing compositions are utilized and specifically located in order to exploit the material characteristics of each type of hardfacing composition employed. The use of multiple hardfacing compositions may further be employed as a wear-resistant coating on various elements of the drill bit. The surfaces to which hardfacing is applied may include machined slots, cavities or grooves providing increased surface area for application of the hardfacing. Additionally, such surface features may serve to effect a desired residual stress state in the resultant hardfacing layer or other structure.

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