| 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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| 09/11/1999 | CA2265039A1 Apparatus for removal of milling debris |
| 09/10/1999 | WO1999045232A1 A mill and a method for milling |
| 09/07/1999 | US5947201 One-trip window-milling method |
| 08/31/1999 | US5944103 Retrievable milling guide anchor apparatus and associated methods |
| 08/31/1999 | US5944101 Apparatus for milling a window in well tubular |
| 08/10/1999 | CA2150175C Abrasive slurry jetting tool and method |
| 08/03/1999 | US5931442 Submersible work vessel for installing a blow out preventer |
| 07/29/1999 | WO1999037883A1 Apparatus and method to shut down a pipeline |
| 07/29/1999 | WO1999037882A1 Milling system and method in a wellbore |
| 07/29/1999 | CA2319260A1 Milling system and method in a wellbore |
| 07/22/1999 | WO1999036662A1 Apparatus and method for milling through a whipstock in a wellbore |
| 07/20/1999 | US5924489 Method of severing a downhole pipe in a well borehole |
| 07/15/1999 | WO1999035366A1 A drill pipe and method of forming and reconditioning a drill pipe |
| 07/08/1999 | WO1999023345A3 Mill for use in a wellbore and method of milling |
| 07/07/1999 | EP0927295A2 Wellbore milling system |
| 07/06/1999 | USRE36244 Well plugging apparatus and method |
| 07/01/1999 | WO1999018322A3 Charge assembly for a pipe-coupling cutting device |
| 06/30/1999 | EP0925422A1 Apparatus and method for cutting a tubular in a wellbore |
| 06/15/1999 | US5911275 Apparatus for milling a well casing |
| 06/09/1999 | EP0663040B1 Method for forming a window in a subsurface well conduit |
| 06/08/1999 | US5909773 Method of repairing a damaged well |
| 06/08/1999 | CA2180047C Internal pressure sleeve for use with easily drillable exit ports |
| 06/01/1999 | US5908071 Wellbore mills and inserts |
| 05/27/1999 | WO1999025611A1 Submersible work vessel for installing a blow out preventer |
| 05/19/1999 | EP0916803A2 Rotary drill bit for casing milling and formation drilling |
| 05/19/1999 | EP0916014A1 Apparatus and method for milling a hole in casing |
| 05/14/1999 | WO1999023345A2 Mill for use in a wellbore and method of milling |
| 05/12/1999 | EP0915231A1 Spiral-shaped roller cutter and tunnel excavator cutter head provided with same |
| 05/05/1999 | CN1215789A Well system |
| 05/04/1999 | US5899796 Rotary grinder assembly and a cutter robot |
| 05/04/1999 | US5899268 Downhole milling tool |
| 04/28/1999 | EP0911483A2 Well system including composite pipes and a downhole propulsion system |
| 04/21/1999 | EP0909363A1 Side pocket mandrel for a measuring instrument |
| 04/20/1999 | US5894889 One trip milling system |
| 04/15/1999 | WO1999018322A2 Charge assembly for a pipe-coupling cutting device |
| 04/14/1999 | EP0907822A1 Method for expanding a steel tubing and well with such as tubing |
| 04/08/1999 | WO1999010621B1 Cutting insert and milling tool for use in a wellbore |
| 04/07/1999 | CN2313038Y Milling cutter for petroleum casing pipe |
| 03/30/1999 | US5887668 Wellbore milling-- drilling |
| 03/30/1999 | US5887655 Wellbore milling and drilling |
| 03/23/1999 | US5884704 Methods of completing a subterranean well and associated apparatus |
| 03/17/1999 | EP0901559A1 Multicut window mill |
| 03/16/1999 | US5881808 Window-cutting system for downhole tubulars |
| 03/10/1999 | EP0900320A1 System and method for placement and retrieval of a subsurface diverting tool used in drilling and completing wells |
| 03/10/1999 | EP0900319A1 Process and device for separation of pipes or columns fixed in the ground |
| 03/10/1999 | EP0772725B1 Method of installing a whipstock |
| 03/04/1999 | WO1999010674A1 An apparatus and a method for mounting a coherent conduit in a groove in a pipe string |
| 03/04/1999 | WO1999010622A1 Installing a scrolled resilient sheet alongside the inner surface of a fluid conduit |
| 03/04/1999 | WO1999010621A1 Cutting insert and milling tool for use in a wellbore |
| 03/03/1999 | EP0899420A1 Method for installing a scrolled resilient sheet alongside the inner surface of a fluid conduit |
| 03/03/1999 | CN1209858A Method for forming window in tubular and apparatus for use in said method |
| 02/20/1999 | CA2245368A1 Main bore isolation assembly for multi-lateral use |
| 02/03/1999 | CN1206778A Method and apparatus for locating indexing systems in cased well and conducting multilateral branch operations |
| 01/26/1999 | US5862870 Wellbore section milling |
| 01/26/1999 | US5862862 Apparatus for completing a subterranean well and associated methods of using same |
| 01/26/1999 | CA2003434C Downhole chemical cutting tool |
| 01/21/1999 | WO1999002815A1 Device and method for creating ramifications in a bore hole |
| 01/19/1999 | US5860474 Method for recompleting a cased wellbore containing a casing |
| 01/07/1999 | EP0888490A2 Mill for wellbore milling operations |
| 01/03/1999 | CA2242026A1 One-trip, thru-tubing, window-milling system |
| 12/29/1998 | US5853056 Method of and apparatus for horizontal well drilling |
| 12/23/1998 | EP0885344A1 Method of removing wellhead assemblies |
| 12/17/1998 | DE19729809C1 Vorrichtung und Verfahren zum Herstellen von Bohrlochverzweigungen Apparatus and method for producing borehole branches |
| 12/08/1998 | US5845710 Methods of completing a subterranean well |
| 12/08/1998 | US5845707 Method of completing a subterranean well |
| 11/18/1998 | EP0878603A2 Well conduit cutting and milling apparatus and method |
| 11/17/1998 | US5836387 System for securing an item in a tubular channel in a wellbore |
| 11/12/1998 | WO1998050671A1 A cutting insert for use in a wellbore milling tool |
| 11/11/1998 | EP0877146A2 Well conduit cutting and milling apparatus and method |
| 11/11/1998 | EP0876545A1 Method for forming a window in a tubular and apparatus for use in said method |
| 11/10/1998 | US5833003 Apparatus for completing a subterranean well and associated methods of using same |
| 11/10/1998 | US5833001 Sealing well casings |
| 11/10/1998 | US5832997 Retrievable milling guide anchor apparatus and associated methods |
| 11/03/1998 | US5829524 Method of preparing a downhole casing tubular |
| 11/03/1998 | US5829518 Mill guide and anchor assembly for subterranean well casings |
| 11/03/1998 | CA2151215C Whipstock and staged sidetrack mill |
| 10/28/1998 | CN1197496A Milling appts. |
| 10/27/1998 | US5826651 Wellbore single trip milling |
| 10/21/1998 | EP0872626A2 Method and apparatus for locating indexing systems in a cased well and conducting multilateral branch operations |
| 10/20/1998 | US5823255 Machine for making a transverse cut in a length of pipe |
| 10/13/1998 | CA2133865C Downhole mill and method for milling |
| 10/07/1998 | CN1195065A Method and apparatus for drilling and re-entering multiple lateral branches in well |
| 10/06/1998 | US5816747 Device for cutting a large diameter pipe and initiation manifold therefor |
| 10/06/1998 | US5816324 Whipstock accelerator ramp |
| 09/30/1998 | EP0866910A1 Apparatus and method for forming a window or an outline thereof in the casing of a cased wellbore |
| 09/29/1998 | US5813465 Apparatus for completing a subterranean well and associated methods of using same |
| 09/23/1998 | EP0676002B1 Anti-rotation devices for use with well tools |
| 09/22/1998 | US5810081 In a tool string |
| 09/22/1998 | US5810079 For removing metal from a wellbore |
| 09/15/1998 | US5806600 Whipstock system |
| 09/15/1998 | US5806595 Wellbore milling system and method |
| 09/09/1998 | EP0765428B1 Pipe cutter |
| 09/08/1998 | US5803431 Shearing gate valve |
| 09/08/1998 | US5803176 Sidetracking operations |
| 09/08/1998 | US5803175 Perforating gun connection and method of connecting for live well deployment |
| 08/27/1998 | WO1998022689A3 Whipstock |
| 08/27/1998 | WO1998021444A3 Apparatus and method for expanding a liner patch; a stroke indicator; and a tubular patch |
| 08/19/1998 | EP0859124A2 Method and apparatus for completing wells with lateral branches |
| 08/19/1998 | EP0859122A2 Method and apparatus for completing wells with lateral branches |
| 08/19/1998 | EP0859120A2 Method and apparatus for completing wells with lateral branches |