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81. 发明授权

EP0909362B1 BOHRWERKZEUG FÜR DAS LUFTHEBEVERFAHREN 失效
标题翻译：钻井工具，AIR抬高过程
公开(公告)号：EP0909362B1
公开(公告)日：2002-03-13
申请号：EP97924882.0
申请日：1997-05-14
申请人： Wirth Maschinen- und Bohrgeräte-Fabrik GmbH
发明人： TIBUSSEK, Fritz
IPC分类号： E21B10/28
CPC分类号： E21B10/18 , E21B10/04 , E21B10/06 , E21B10/28 , E21B21/12 , E21B21/14
摘要： The invention relates to a process for drilling of bores in the ground, removing the drilled material by reverse circulation. A boring tool (100, 200, 300) with a boring head (10; 110; 210) equipped on the lower surface with cutting members is used, has hollow drill rods (50; 150, 250) with an inner conveying channel (51) connected to the upper surface thereof, and drilled material mixed with the flushing liquid is removed through the conveying channel (51) from the lower surface of said boring head. A transverse stream (Q) of the flushing liquid at a high flow speed is achieved to carry the drilled material and is located on the lower surface of the boring tool head (10, 110, 210), in a radial channel connected to the guide channel (51).

82. 发明公开

EP0775247A4 ROCK BIT WITH ENHANCED FLUID RETURN AREA 失效
标题翻译：具有改进的液体回流电流量程GESTEINBOHRMEISSEL
公开(公告)号：EP0775247A4
公开(公告)日：2000-09-06
申请号：EP95928786
申请日：1995-08-08
申请人： DRESSER IND
发明人： HUFFSTUTLER ALAN DEE
IPC分类号： E21B10/18 , E21B10/20
CPC分类号： E21B10/20 , E21B10/18
摘要： A rotary cone drill bit (20) for forming a borehole (24) having a one-piece bit body (40) with a lower portion (46) having a convex exterior surface and an upper portion (42) adapted for connection to a drill string (22). A number of support arms (70) are preferably attached to the bit body (40) and depend therefrom. Each support arm (70) has an inside surface (76) with a spindle (82) connected to the associated support arm (70). A number of cone cutter assemblies (100) equal to the number of support arms (70) are mounted on each of the spindles (82). The support arms (70) are spaced on the exterior of the bit body (40) to provide enhanced fluid flow between the lower portion (46) of the bit body and the support arms (70). Also, the length of the support arms (70) is selected to provide fluid flow between the associated cutter cone assembly (100) and the lower portion (46) of the bit body. The same bit body may be used with various rotary cone drill bits having different gauge diameters.

83. 发明公开

EP1023519A1 ROCK BIT WITH IMPROVED NOZZLE PLACEMENT 审中-公开
标题翻译：具有改进的喷嘴装置的岩石
公开(公告)号：EP1023519A1
公开(公告)日：2000-08-02
申请号：EP98953355.9
申请日：1998-10-09
申请人： Dresser Industries Inc. , Clydesdale, Graham MacDonald , Huffstutler, Alan Dee , Campos, Harry Morales, Jr. , Spatz, Edward Charles , Tso, Lawrence Lee
发明人： CLYDESDALE, Graham, MacDonald , HUFFSTUTLER, Alan, Dee , CAMPOS, Harry, Morales, Jr. , SPATZ, Edward, Charles , TSO, Lawrence, Lee
IPC分类号： E21B10/18
CPC分类号： E21B10/18
摘要： A rotary cone drill bit (20) is provided with enhanced fluid flow near the bottom of an associated borehole resulting in improved removal of cuttings and other debris from the bottom of the borehole. The drill bit includes a plurality of fluid passageways (62) extending from the bit body (40) to the exterior of the drill bit. The bit body may include an enlarged cavity (56) with the fluid passageways extending therefrom. One end of the cavity preferably includes an opening (58) to receive fluid from a drill string attached to the drill bit. The end of the cavity opposite from the opening may have a generally parabolic configuration (57). For one application, a web member extends from the lower portion of the bit body, occupying a void area between each cutter cone assembly. The web member preferably contains a plurality of fluid passageways which direct drilling fluid from the drill string, through the bit body, through the web member, and exiting at nozzles adjacent to the bottom of the associated borehole.

84. 发明公开

EP0796385A1 ROTARY CONE DRILL BIT WITH ANGLED RAMPS 失效
标题翻译：切割孔与倾斜水平
公开(公告)号：EP0796385A1
公开(公告)日：1997-09-24
申请号：EP95943014.0
申请日：1995-12-06
申请人： Dresser Industries Inc.
发明人： HUFFSTUTLER, Alan, Dee , CAMPOS, Harry, Morales, Jr.
IPC分类号： E21B10
CPC分类号： E21B10/18 , E21B10/08
摘要： A rotary cone drill bit (10) for forming a borehole having a bit body (18) with an upper end portion (20) adapted for connection to a drill string (21). A number of support arms (24) extend from the bit body (18). Each support arm (24) has an exterior surface (38). A number of cutter cone assemblies (12) equal to the number of support arms (24) are mounted respectively on the support arms (24) and project generally downwardly and inwardly with respect to an associated support arm (24). A ramp (36) is formed on the exterior surface (38) of the support arm (24) and is inclined at an angle from the leading edge (40) of the support arm (24) toward a trailing edge (42) of the support arm (24) such that the ramp (36) directs cuttings upward in the borehole.

85. 发明公开

EP0775246A1 ROTARY CONE DRILL BIT WITH IMPROVED SUPPORT ARMS 失效
标题翻译： ROLLENDREHBOHRMEISSEL具有改进的支撑臂
公开(公告)号：EP0775246A1
公开(公告)日：1997-05-28
申请号：EP95930140.0
申请日：1995-08-08
申请人： Dresser Industries Inc.
发明人： HUFFSTUTLER, Alan, Dee
IPC分类号： E21B10
CPC分类号： E21B10/18 , E21B10/20
摘要： A rotary cone drill bit (20) having a bit body (40) with an upper end portion (42) adapted for connection to a drill string (22). A number of support arms (70) are preferably extended from the bit body (40). The support arms (70) may either be formed as an integral part of the bit body (40) or attached to the exterior of the bit body in pockets (54). Each support arm (70) has a lower portion with an inside surface (76) and a spindle (82) connected thereto and an outer shirttail surface (88). Each spindle (82) projects generally downwardly and inwardly with respect to the associated support arm (70). A number of cutter cone assemblies (100) equal to the number of support arms (70) are mounted respectively on the spindles (82). A throat relief area (87) is provided on the lower portion of each support arm (70) adjacent to the associated spindle (82) to increase fluid flow between the support arm (70) and the respective cutter cone assembly (100).

86. 发明公开

EP0735232A1 Cutter bit for use in drilling operations 失效
标题翻译： BohrweisselfürBohrvorgänge
公开(公告)号：EP0735232A1
公开(公告)日：1996-10-02
申请号：EP95302012.0
申请日：1995-03-27
申请人： Gray, Clifford Ross
发明人： Gray, Clifford Ross
IPC分类号： E21B10/18
CPC分类号： E21B10/18
摘要： Disclosed is a cutter bit (1) for use in drilling operations comprising a body (10) having a top portion (11) and a bottom portion (12), the bottom portion (12) being provided with cutting means for cutting a formation to which the cutting means is exposed. Within an outer circumference (13) of the bottom portion (12) of the body (10) there is provided an opening (14) to a first passage (15) through the body (10) to communicate a first zone (20) of a hole located below the bottom portion (12) of the body (10) with a second zone of the hole located above the bottom portion (12) of the body (10).
摘要翻译：公开了一种用于钻井操作的切割钻头（1），包括具有顶部（11）和底部（12）的主体（10），底部（12）设有切割装置，用于将地层切割成切割装置被暴露。在本体（10）的底部（12）的外圆周（13）内，通过本体（10）设置有通向第一通道（15）的开口（14），以将第一区域（20）位于主体（10）的底部（12）下方的孔，孔的第二区位于主体（10）的底部（12）上方。

87. 发明授权

EP0452584B1 Nozzle means for rotary drill bits 有权转让
标题翻译：一种旋转钻头喷嘴。
公开(公告)号：EP0452584B1
公开(公告)日：1994-06-29
申请号：EP90308487.9
申请日：1990-08-01
申请人： CAMCO INTERNATIONAL INC.
发明人： Ivie, Craig R. , Pearce, David E.
IPC分类号： E21B10/18
CPC分类号： E21B10/18

88. 发明公开

EP0449416A3 Rotary drill bit with outwardly directed nozzles 失效转让
标题翻译：旋转钻头，带有非常方向的喷嘴
公开(公告)号：EP0449416A3
公开(公告)日：1992-01-02
申请号：EP91301390.0
申请日：1991-02-21
申请人： CAMCO INTERNATIONAL INC.
发明人： Ivie, Craig R. , Pearce, David E.
IPC分类号： E21B10/18
CPC分类号： E21B10/18
摘要： A rotary drill bit (10) has fluid discharge nozzles (36A, 36B, 36C) positioned between adjacent pairs of roller cutters (20A, 20B, 20C). A fluid discharge nozzle (36A) provides a stream of drilling fluid (44) directed toward an adjacent roller cutter (20A) and slanted toward the bore hole side wall away from a radial direction at a slant impact angle B for first impacting the side wall (34), and then sweeping in a high velocity stream along the corner surface (33) and inwardly across the bore hole bottom (32) at cutting element engagement locations (39).

89. 发明公开

EP0395769A4 Boring bit 失效
标题翻译：镗头
公开(公告)号：EP0395769A4
公开(公告)日：1991-11-06
申请号：EP90900415
申请日：1989-11-01
申请人： MINISTERSTVO GAZOVOI PROMYSHLENNOSTI SSSR
发明人： AKBULATOV, ISKANDER TIMUROVICH , BAIRAKOV, MARAT NILOVICH , AGLIULLIN, AKHTYAM KHALIMOVICH , AKCHURIN, KHAMZA ISKHAKOVICH , MAVLJUTOV, MIDKHAT RAKHMATULLICH , GORONOVICH, SERGEI NIKOLAEVICH
IPC分类号： E21B10/18 , E21B10/60
CPC分类号： E21B10/60 , E21B10/18

90. 发明公开

EP0449415A2 Outwardly mounted nozzles for rotary drill bits 失效
标题翻译： Nach aussen gerichteteDüsenfürDrehbohrmeissel。
公开(公告)号：EP0449415A2
公开(公告)日：1991-10-02
申请号：EP91301389.2
申请日：1991-02-21
申请人： CAMCO INTERNATIONAL INC.
发明人： Moffitt, Stuart R. , Ivie, Craig R.
IPC分类号： E21B10/18
CPC分类号： E21B10/18
摘要： A rotary drill bit (10) has fluid discharge nozzles (36A, 36B, 36C) positioned between adjacent pairs of roller cutters (20A, 20B, 20C). A fluid discharge nozzle (36A) positioned along the outer circumference of the drill bit body (12) provides a high velocity stream of drill fluid (44) along the bore hole side wall (34) with at least a substantial side portion of the stream (44) engaging the side wall (34) adjacent roller cutter (20A) and flowing downwardly along the side wall (34) across the bore hole corner surface (33). The nozzle orifice (37) has its center (41) positioned less than one inch from the adjacent bore hole side wall (34) and the stream is directed downwardly to provide a minimal change in direction as the stream (44) sweeps across the corner surface (33) and the bore hole bottom surface (32).
摘要翻译：旋转钻头（10）具有定位在相邻成对的辊切割器（20A，20B，20C）之间的流体排出喷嘴（36A，36B，36C）。沿着钻头体（12）的外圆周定位的流体排放喷嘴（36A）沿钻孔侧壁（34）提供高速流的钻井液（44），其中流体的至少大部分侧部（44）接合邻近辊切割器（20A）的侧壁（34）并且沿侧壁（34）向下流过钻孔拐角表面（33）。喷嘴孔（37）的中心（41）的中心（41）位于相邻钻孔侧壁（34）的不到一英寸处，并且流向下指向，以便当流（44）扫过角落时提供最小的方向变化表面（33）和钻孔底面（32）。

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