子分类：
- E21B29/002： .{用沿着管子周围转动的切割器切割管子,例如,研磨}
- E21B29/02： .使用炸药或热力或化学方法(通过爆炸释放粘住的物品入E21B31/002;通过爆炸破坏井眼或井中的物体入E21B31/16)
- E21B29/04： .切割钢丝绳或类似物(E21B29/02优先)
- E21B29/06： .切割窗口,例如,用于造斜器操作的定向窗口切割器(E21B29/005和E21B29/08优先;造斜器入E21B7/061)
- E21B29/08： .切割管道或使管道变形来控制液体流动(剪切型防喷器入E21B33/06)
- E21B29/10： .修复井筒,例如,调直
- E21B29/12： .专门适用于水下安装的(E21B29/08优先)
| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 101 | PROFILE FORMATION | EP99962310.1 | 1999-12-22 | EP1144802B1 | 2004-12-08 | METCALFE, Paul D.; SIMPSON, Neil, Andrew, Abercrombie |
| 102 | DRILLING METHOD | EP99962308.5 | 1999-12-22 | EP1141517B1 | 2004-12-08 | METCALFE, Paul David; SIMPSON, Neil Andrew Abercrombie |
| A drilling method comprises: mounting a drill bit on a drill string including a section of expandable tubing; providing a tubing expander in the string; rotating the drill bit and advancing the drill string through a bore; locating the expandable tubing in the bore; passing the expander through the expandable tubing to expand the tubing; and retreiving the drill bit from the bore, through the expanded tubing. | ||||||
| 103 | PIPE CENTRALIZER AND METHOD OF ATTACHMENT | EP02729745.6 | 2002-06-13 | EP1399641A1 | 2004-03-24 | SLACK, Maurice, William |
| A crimpable centralizer has been invented for installation on pipe, such as would be useful in well bore drilling and casing operations. The present invention provides a centralizer having a cylindrical body which when coaxially placed over a pipe and substantially radially inwardly displaced at a plurality of points (i.e. crimped) about the circumference of a section of the cylindrical body, attaches to the pipe to create a connection having structurally significant axial and torque load transfer capacity. When crimped according to the methods of the present invention, the load transfer capacity of the connection between the centralizer and the pipe can be arranged to substantially prevent significant relative movement of the centralizer on the pipe under loads that may be encountered when using one or more of the pipes as components of a tubular string used for drilling or completing well bores. | ||||||
| 104 | APPARATUS AND METHOD FOR MILLING THROUGH A WHIPSTOCK IN A WELLBORE | EP99901711.4 | 1999-01-18 | EP1047860B1 | 2004-03-24 | DURST, Douglas Glenn; ROBERTSON, Robert, Eugene; CARTER, Thurman B.; JOHANTGES, Paul, Jeffrey; PLEASANTS, Charles, W.; BLIZZARD, William, Alan, Jr.; LANGFORD, Dale, Elliott; MCCLUNG, Guy, LaMont, III |
| An apparatus for milling through a whipstock in a wellbore, which apparatus comprises a mill guide with a lower shoe for emplacement between an interior surface of the wellbore and an exterior portion of an upstream portion of the whipstock to position and/or stabilize the mill guide. | ||||||
| 105 | Apparatus and method for milling through a whipstock in a wellbore | EP02102822.0 | 1999-01-18 | EP1312751A2 | 2003-05-21 | DURST, Douglas Glenn; ROBERTSON, Robert, Eugene; CARTER, Thurman B.; JOHANTGES, Paul, Jeffrey; PLEASANTS, Charles, W.; BLIZZARD, William, Alan, Jr.; LANGFORD, Dale, Elliott; MCCLUNG, Guy, LaMont, III |
A method for milling within a whipstock set in a wellbore comprises introducing a mill guide (30) having a channel therethrough into the wellbore above the whipstock. The mill guide is moved into stabilising contact with the whipstock and a mill is guided by the mill guide to mill down into the whipstock. The mill has at least a portion thereof in contact with the mill guide while milling into the whipstock. |
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| 106 | Apparatus for completing a subterranean well and method of using same | EP97305216.0 | 1997-07-14 | EP0819828B1 | 2003-05-21 | Gano, John C.; Blizzard, William; Durst, Douglas; Langford, Dale; Carter, Thurman |
| 107 | Apparatus for completing a subterranean well and method of using same | EP97305189.9 | 1997-07-14 | EP0819825B1 | 2003-05-07 | Gano, John C.; Longbottom, James R.; Halford, Gene; Durst, Douglas; Blizzard, William |
| 108 | ANTI-ROTATION DEVICE FOR USE WITH WELL TOOLS | EP00962040 | 2000-08-02 | EP1206623A4 | 2002-10-16 | LATIOLAIS BURNEY JR; HAWKINS SAMUEL P II; LUTGRING KEITH T |
| A drillable, anti-rotation device (10) for limiting the rotation of a downhole tool, such as a cement plug, when drilling out the downhole tool. The drillable, anti-rotation device (10) comprises a drillable sleeve (12) connected within a non-drillable outer tubular member (20) connected within a pipe string. The sleeve (12) has one or more grooves (46) or other indentation, and/or one or more ribs (14) or other protrusions extending inwardly within the interior of the device for gripping or otherwise retarding the rotation of such downhole tool. | ||||||
| 109 | ANTI-ROTATION DEVICE FOR USE WITH WELL TOOLS | EP00962040.2 | 2000-08-02 | EP1206623A1 | 2002-05-22 | LATIOLAIS, Burney, Jr.; HAWKINS, Samuel, P., II; LUTGRING, Keith, T. |
| A drillable, anti-rotation device (10) for limiting the rotation of a downhole tool, such as a cement plug, when drilling out the downhole tool. The drillable, anti-rotation device (10) comprises a drillable sleeve (12) connected within a non-drillable outer tubular member (20) connected within a pipe string. The sleeve (12) has one or more grooves (46) or other indentation, and/or one or more ribs (14) or other protrusions extending inwardly within the interior of the device for gripping or otherwise retarding the rotation of such downhole tool. | ||||||
| 110 | A CUTTING INSERT FOR USE IN A WELLBORE MILLING TOOL | EP98919299.2 | 1998-05-01 | EP0979344A1 | 2000-02-16 | HUTCHINSON, Christopher, Paul |
| A cutting insert for use in a wellbore milling tool, characterised in that said cutting insert is provided with means (385, 375, 398, 397, 476, 478) which will co-operate with another cutting insert to inhibit inadvertent dislocation thereof. There is also disclosed a cutting insert for use in a wellbore milling tool, said cutting insert comprising a body having a base which can be mounted on a surface of said wellbore milling tool and a cutting surface bounded by linear boundaries which extend from a first edge of the cutting insert to a second edge thereof said cutting surface having a plurality of ridges (349) which extend between said linear boundaries, characterised by four cutting surfaces, the linear boundaries of which are substantially parallel to one another. | ||||||
| 111 | Apparatus for completing a subterranean well and method of using same | EP97305216.0 | 1997-07-14 | EP0819828A3 | 1999-11-17 | Gano, John C.; Blizzard, William; Durst, Douglas; Langford, Dale; Carter, Thurman |
Apparatus and method for forming an opening from a first wellbore (36f) to a second wellbore (38f). The apparatus includes a milling guide (190) having an axially extending guide profile (196) formed therein, which guide profile is capable of directing a mill (198) toward a liner (28f) extending across the second wellbore (38f). The milling guide (190) is capable of being anchored in the liner (28f) to thereby fix its axial and rotational alignment relative to the liner (28f). The milling guide (190) is anchored by a gripping structure (202) that is capable of radially outwardly engaging the liner (28f). |
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| 112 | Apparatus for completing a subterranean well and method of using same | EP97305189.9 | 1997-07-14 | EP0819825A3 | 1999-11-17 | Gano, John C.; Longbottom, James R.; Halford, Gene; Durst, Douglas; Blizzard, William |
Apparatus and method of forming an opening between a first wellbore (36g) and a second wellbore (38g). The apparatus includes a milling guide (248) having a guide profile (250) formed thereon which is operative to guide a cutting tool (252) to contact a liner (28g). An anchor portion (202g) of the milling guide (248) grippingly engages the liner (28g) to axially and rotationally align the milling guide (248) with the liner (28g). |
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| 113 | PLUG COMPRISING A DISC VALVE | EP97933787.0 | 1997-07-29 | EP0852654A1 | 1998-07-15 | RUBBO, Richard, Paul |
| A plug (1) comprises a barrier portion (5) and a cutter mechanism (8) which can cut an aperture in the plug (5) when in place in a well by piercing the plug, cutting a portion of it and moving the cut portion from the fluid path through the plug. | ||||||
| 114 | A CUTTING INSERT FOR USE IN A WELLBORE MILLING TOOL | EP96932680.0 | 1996-09-23 | EP0851964A1 | 1998-07-08 | HUTCHINSON, Christopher, Paul |
| A cutting insert (10) for use in a wellbore milling tool comprising a base which can be mounted on a surface of said wellbore milling tool and a plurality of cutting surfaces (25, 26, 27) which are separated from one another by linear boundaries (16, 18). This construction helps facilitate the formation of relatively narrow chips. | ||||||
| 115 | APPARATUS FOR FORMING A SLOT IN A WELLBORE | EP96937412.0 | 1996-11-06 | EP0800610A1 | 1997-10-15 | McGARIAN, Bruce; TULLOCH, Rory, McCrae |
| A chain saw for cutting slots in a wellbore casing and the surrounding formation comprises a pair of cutting chain assemblies (37) rotatably mounted on a body and moveable from a storage position in which the axes of the cutting chain assemblies are parallel to the axis of the tool to a position at right angles to the storage position. The chains are driven by a mud motor, step-up gearbox, drive shaft (20) and bevel gear (34). The position of the chain arms is controlled by a mud operated piston (44) which is connected by rods (41A) to racks (41) which mesh with pinions provided on the arms of the chain assemblies (37). Pressurization of the drillstring upon which the tool is mounted will cause rotation of the motor to drive the cutting chains and simultaneous downward displacement of the piston (44) to bring the cutting chains into engagement with the casing. When the piston (44) has moved a sufficient distance to bring the cutting chain assemblies (37) to a position perpendicular to the axis of the tool the slot may be increased in size by upward movement of the entire tool as the chains continue to rotate. | ||||||
| 116 | DEVICE AND METHOD FOR MAKING A SLOT IN AN UNDERGROUND FORMATION | EP95929072.0 | 1995-08-01 | EP0774039A1 | 1997-05-21 | ROSS, Brent, Reynolds; WORRALL, Robert, Nicholas |
| A cutting device for making a slot adjacent to a well traversing an underground formation comprises a chain saw arm (15) which carries an endless chain (24) with cutting elements (25). In use the chain (24) is rotated around the arm (15) while the arm (15) is gradually hinged from a longitudinal towards a lateral position relative to the wellbore thereby inducing the cutting elements (25) to cut a slot through the formation (2) and well casing or liner (5), if present. | ||||||
| 117 | Non-rotating plug set | EP89304094.9 | 1989-04-25 | EP0371576B1 | 1994-06-22 | Watson, Brock W.; Freeman, T. Austin |
| 118 | Downhole tool apparatus with non-metallic slips | EP93303523.0 | 1993-05-06 | EP0570157A3 | 1994-03-09 | Streich, Steven G.; Hushbeck, Donald F.; Berscheidt, Kevin T.; Jacobi, Rick D. |
A downhole tool apparatus such as a packer or bridge plug, for use in a well bore, comprises a centre mandrel (102), a slip wedge (126) around the mandrel, separate non-metallic slips (116) around the mandrel adjacent the wedge, and means (117) for retaining the slips initially out of engagement with the well bore. The non-metallic material may include engineering grade plastics. The slips can be separate and held in place in an initial position around the slip wedge by a retainer ring, or they may be integrally formed with a fracturable ring portion which holds the slips in the initial position around the wedge. The use of non-metallic material improves the drillability of the apparatus when drilling is required to remove the apparatus from the well. |
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| 119 | ANTI-ROTATION DEVICE FOR USE IN WELLBORES | EP91907746.0 | 1991-04-09 | EP0527773A1 | 1993-02-24 | GLASER, Mark, C. |
| Un dispositif anti-rotation (20) peut s'intégrer à un tampon supérieur (10) ou autre outil de forage. Le dispositif anti-rotation (20) comprend un plancher (25). Une pluralité de dents (22) sont montées sur le plancher (25) et entourées par un élément de charge (30) de forme annulaire. Les dents (22) dépassent l'anneau (30). Quand deux dispositifs anti-rotation s'avancent l'un vers l'autre, les surfaces des éléments de charge viennent en prise et absorbent les forces de compression tandis que les dents sont exemptes, ou pratiquement exemptes, de forces de compression et agissent uniquement pour empêcher toute rotation relative entre les dispositifs anti-rotation. | ||||||
| 120 | Pressure controlled tool for servicing operations in a pipeline | EP88312138.6 | 1988-12-21 | EP0338165B1 | 1992-10-28 | Thornburrow, Edward Thomas |
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