| Patents for E21B 29 - Cutting or destroying pipes, packers, plugs, or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows; Deforming of pipes in boreholes or wells; Reconditioning of well casings while in the ground (5,744) |
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| 01/30/2003 | WO2003008755A2 Wear resistant tubular connection |
| 01/30/2003 | US20030019638 Procedures and equipment for profiling and jointing of pipes |
| 01/30/2003 | US20030019637 Method for preparing casing for use in a wellbore |
| 01/29/2003 | EP1278932A1 Apparatus and methods for forming a lateral wellbore |
| 01/23/2003 | WO2002090710A3 Packer with lateral feed-through connection |
| 01/23/2003 | WO2002052124A3 Method and apparatus for repair operations downhole |
| 01/23/2003 | US20030015322 Methods and apparatus for severing nested strings of tubulars |
| 01/23/2003 | US20030015246 Casing patching tool |
| 01/22/2003 | EP1276955A1 Central circulation completion system |
| 01/18/2003 | CA2353249A1 Pipe centralizer and method of attachment |
| 01/16/2003 | WO2003004820A2 Liner hanger |
| 01/16/2003 | US20030010497 Milling apparatus and method for a well |
| 01/15/2003 | CN1391025A Arranging mode of hard alloy blocks for sectional milling device and sectional milling device |
| 01/15/2003 | CN1098967C Foldable tube |
| 01/15/2003 | CN1098966C Deformable liner tube and its use |
| 01/14/2003 | US6505559 Well bore cutting and perforating devices and methods of manufacture |
| 01/09/2003 | WO2003002844A1 Drillable junction joint |
| 01/08/2003 | EP1272729A1 Whipstock asssembly |
| 01/08/2003 | CN1098405C Method for installing scrolled resilient sheet alongside inner surface of fluid conduit |
| 12/31/2002 | US6499538 Method and apparatus for forming an optimized window |
| 12/31/2002 | US6499537 Well reference apparatus and method |
| 12/27/2002 | WO2002103156A1 Method for preparing wellbore casing for installation |
| 12/27/2002 | WO2002103155A1 Casing wear band and method of attachment |
| 12/27/2002 | WO2002103154A1 Pipe centralizer and method of attachment |
| 12/27/2002 | CA2450651A1 Casing wear band and method of attachment |
| 12/26/2002 | US20020195256 Downhole sealing |
| 12/26/2002 | US20020195249 Drillable junction joint |
| 12/26/2002 | US20020195247 Well-bore sensor apparatus and method |
| 12/26/2002 | US20020195243 Whipstock assembly |
| 12/25/2002 | CN1097134C Grouting pipe equipment and method of grouting using same for underground water well |
| 12/24/2002 | US6497289 Method of creating a casing in a borehole |
| 12/19/2002 | US20020189816 Wellbore casing |
| 12/17/2002 | US6494259 Downhole flame spray welding tool system and method |
| 12/15/2002 | CA2350681A1 Pipe centralizer and method of attachment |
| 12/12/2002 | WO2002099247A1 In-situ casting of well equipment |
| 12/12/2002 | WO2002099245A1 Use of helically wound tubular structure in the downhole environment |
| 12/12/2002 | WO2002084073A3 Pressure wave expansion tool |
| 12/12/2002 | US20020185274 Apparatus and methods for expanding tubulars in a wellbore |
| 12/05/2002 | US20020179306 Use of helically wound tubular structure in the downhole environment |
| 12/04/2002 | EP1262268A1 High-speed chemical drill |
| 12/04/2002 | CN2523945Y High performance rotary shoe |
| 12/03/2002 | US6488090 Method and apparatus for accurate milling of windows in well casings |
| 11/28/2002 | US20020175474 Tubing seal |
| 11/28/2002 | US20020175004 Horizontal directional drilling in wells |
| 11/21/2002 | US20020171560 Reservoir management system and method |
| 11/21/2002 | US20020170713 System for forming a window and drilling a sidetrack wellbore |
| 11/20/2002 | EP0925422B1 Apparatus and method for cutting a tubular in a wellbore |
| 11/18/2002 | CA2385793A1 Well reference apparatus and method |
| 11/14/2002 | WO2002090710A2 Packer with lateral feed-through connection |
| 11/14/2002 | US20020166668 Tubing anchor |
| 11/13/2002 | EP1009909B1 Installing a scrolled resilient sheet alongside the inner surface of a fluid conduit |
| 11/12/2002 | US6478088 Method for the formation of a plug in a petroleum well |
| 11/07/2002 | WO2002088517A1 System for retrieving a tubular element from a well |
| 11/07/2002 | WO2002025050A3 Downhole machining of well completion equipment |
| 11/07/2002 | US20020162689 Horizontal directional drilling in wells |
| 11/07/2002 | US20020162667 Tubing hanger with lateral feed-through connection |
| 11/07/2002 | US20020162659 Reverse section milling method and apparatus |
| 11/05/2002 | US6474415 Method and apparatus for milling openings in downhole structures |
| 11/04/2002 | EP1153195A4 Downhole apparatus and method for milling a window and at least one key-way in a well casing |
| 10/31/2002 | WO2002086282A1 Wireline retrievable safety valve with radial cutting device |
| 10/31/2002 | US20020157830 Downhole tool |
| 10/29/2002 | US6470966 Apparatus for forming wellbore casing |
| 10/24/2002 | WO2002084073A2 Pressure wave expansion tool |
| 10/24/2002 | US20020153139 Subsurface safety valve lock out and communication tool and method for use of the same |
| 10/24/2002 | US20020152856 Hydraulic wireline cutter |
| 10/23/2002 | EP1251241A1 Downhole casing repair |
| 10/23/2002 | EP1015731B1 Cutting insert and milling tool for use in a wellbore |
| 10/17/2002 | US20020150436 Tubular cutting tool |
| 10/17/2002 | US20020148617 Well reference apparatus and method |
| 10/17/2002 | US20020148612 Isolation of subterranean zones |
| 10/16/2002 | EP1249574A2 Multilateral well drilling and completion method and apparatus |
| 10/16/2002 | EP1248894A1 Method and apparatus for a combined exit guide and sectional mill for sidetracking |
| 10/16/2002 | EP1206623A4 Anti-rotation device for use with well tools |
| 10/15/2002 | US6464434 Cutting matrix and method applying the same |
| 10/15/2002 | US6464002 Whipstock assembly |
| 10/10/2002 | WO2002079604A2 Expandable downhole tool |
| 10/10/2002 | US20020145281 An apparatus and method for isolating a section of tubing |
| 10/10/2002 | US20020144817 Anchoring device removal method and apparatus |
| 10/10/2002 | CA2442117A1 Expandable downhole tool |
| 10/09/2002 | EP1246993A1 Three dimensional steerable system |
| 10/09/2002 | CN1092276C Apparatus of valve for stopping oil and gas drilling rod |
| 10/08/2002 | US6460615 Pipe expansion device |
| 10/03/2002 | US20020139528 Downhole flame spray welding tool system and method |
| 10/01/2002 | US6457532 Procedures and equipment for profiling and jointing of pipes |
| 09/30/2002 | CA2378743A1 Downhole flame spray welding tool system and method |
| 09/26/2002 | WO2002075107A1 Tubing seal |
| 09/26/2002 | WO2002075097A2 Methods and apparatus for severing nested strings of tubulars |
| 09/24/2002 | US6454015 Shearing gate valve |
| 09/24/2002 | US6454007 Method and apparatus for casing exit system using coiled tubing |
| 09/24/2002 | US6454006 Methods and associated apparatus for drilling and completing a wellbore junction |
| 09/19/2002 | WO2002073000A1 Expander for expanding a tubular element |
| 09/19/2002 | WO2002023008A3 Methods and apparatus for forming a lateral wellbore |
| 09/19/2002 | US20020129940 High temperature explosives for downhole well applications |
| 09/18/2002 | EP1241321A2 Tubular cutting tool |
| 09/10/2002 | US6446323 Profile formation |
| 09/05/2002 | US20020121393 Mill/drill bit |
| 09/04/2002 | EP1236861A1 Mill/drill bit |
| 09/04/2002 | EP1235972A1 Pipe expansion device |
| 09/03/2002 | CA2276222C High pressure internal sleeve for use with easily drillable exit ports |
| 09/02/2002 | CA2374086A1 Mill/drill bit |