Patents
Sitemap › E21 - Earth or rock drilling; Mining › E21B - Earth or rock drilling; Obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells › 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
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)
08/1998
08/18/1998CA2094793C Downhole tool apparatus with non-metallic components and methods of drilling thereof
08/18/1998CA2036376C Apparatus for recovering a wellhead
08/18/1998CA2016238C Milling apparatus with replaceable blades
08/13/1998CA2229104A1 Methods of completing a subterranean well and associated apparatus
08/12/1998EP0720684B1 Method of and apparatus for horizontal well drilling
08/11/1998US5791417 Tubular window formation
08/11/1998US5791409 Hydro-mechanical multi-string cutter
08/06/1998WO1998034007A1 Tool and method for drilling a lateral well
08/06/1998WO1998034006A1 Tool for making an opening in a tubular in a wellbore
08/05/1998EP0698136B1 Preform or matrix tubular structure for well casing
08/04/1998US5787987 Lateral seal and control system
08/04/1998US5787984 Method and device for casing a well with a composite pipe
08/04/1998US5787983 Methods of delaying well destruction due to subsidence
08/04/1998US5787978 Multi-face whipstock with sacrificial face element
07/1998
07/28/1998US5785133 Multiple lateral hydrocarbon recovery system and method
07/28/1998US5785120 Tubular patch
07/22/1998EP0853715A1 Apparatus and method for milling a well casing
07/16/1998WO1998030350A1 Device for trenchless replacement of underground pipe
07/15/1998EP0852654A1 Plug comprising a disc valve
07/15/1998EP0852652A1 Method for isolating multi-lateral well completions while maintaining selective drainhole re-entry access
07/14/1998US5778995 Milling insert and a milling tool
07/14/1998US5778980 Multicut casing window mill and method for forming a casing window
07/13/1998CA2226796A1 Dissolvable release mechanism for travel joints and method
07/08/1998EP0852282A2 Method of constructing a well
07/08/1998EP0851964A1 A cutting insert for use in a wellbore milling tool
07/08/1998EP0851963A1 Milling apparatus
07/07/1998US5777257 Apparatus for severing tubular members
07/07/1998US5775428 Whipstock-setting apparatus
07/03/1998CA2225762A1 Methods of delaying well destruction due to subsidence
07/01/1998EP0774039B1 Device and method for making a slot in an underground formation
06/1998
06/30/1998US5771972 One trip milling system
06/25/1998WO1998027312A1 System for controlling and stopping oil drilling fires
06/25/1998CA2273996A1 System for controlling and stopping oil drilling fires
06/24/1998EP0781369B1 Apparatus for milling a well casing
06/23/1998US5769167 Thru tubing whipstock and method
06/23/1998US5769166 Wellbore window milling method
06/16/1998US5765756 Abrasive slurry jetting tool and method
06/10/1998EP0846838A2 Methods and apparatus for performing explosive cutting operations in a subterranean well
06/10/1998EP0846837A2 Subterranean well bore casing milling apparatus
06/10/1998EP0846836A2 Retrievable guide anchor assembly and methods for milling a well casing
06/09/1998US5762143 System and method for placement and retrieval of a subsurface diverting tool used in drilling and completing wells
06/04/1998WO1998012413A3 Wellbore milling system
06/04/1998CA2222400A1 Method and apparatus for performing cutting operations in a subterranean well
05/1998
05/28/1998WO1998022689A2 Whipstock
05/26/1998CA2135402C Guide assembly and method
05/22/1998WO1998021444A2 Apparatus and method for expanding a liner patch; a stroke indicator; and a tubular patch
05/07/1998WO1998007955A3 System for cutting materials in wellbores
05/06/1998EP0839254A1 Branch boreholes
04/1998
04/30/1998WO1998017891A1 Method of longitudinally splitting a pipe coupling within a wellbore
04/29/1998EP0837978A1 Single trip whipstock assembly
04/28/1998US5743331 Wellbore milling system
04/14/1998CA2010796C Downhole milling tool and cutter therefor
04/08/1998EP0834643A2 Method and apparatus for drilling and re-entering multiple lateral branches in a well
04/07/1998US5735350 Methods and systems for subterranean multilateral well drilling and completion
04/02/1998WO1998013572A1 Combination milling tool and drill bit
03/1998
03/31/1998US5732770 Wellbore cutter
03/26/1998WO1998012413A2 Wellbore milling system
03/25/1998CN2276986Y Well repairing bullet
03/24/1998US5730221 Methods of completing a subterranean well
03/17/1998US5727629 Wellbore milling guide and method
03/13/1998CA2214175A1 Drilling apparatus and drilling method for renovating underground pipes
03/10/1998US5725060 Mill starting device and method
03/09/1998CA2196826A1 Hydro-mechanical multi-string cutter
03/05/1998WO1998009049A1 Method and apparatus to seal a junction between a lateral and a main wellbore
03/03/1998US5722489 Multipurpose drilling tool
02/1998
02/26/1998WO1998007955A2 System for cutting materials in wellbores
02/25/1998EP0825327A2 Apparatus for completing a subterranean well and method of using same
02/24/1998US5720349 For wellbore milling operations
02/24/1998US5720348 Apparatus and method for cutting wire
02/24/1998US5720344 Method of longitudinally splitting a pipe coupling within a wellbore
02/12/1998WO1998005846A1 Apparatus and method for cutting a tubular in a wellbore
02/12/1998WO1998005845A1 Method for forming a casing window
02/12/1998CA2262635A1 Apparatus and method for cutting a tubular in a wellbore
02/12/1998CA2232941A1 Method for forming a casing window
02/10/1998US5715891 Method for isolating multi-lateral well completions while maintaining selective drainhole re-entry access
02/05/1998WO1998004806A1 Plug comprising a disc valve
02/05/1998WO1998004804A1 Apparatus and method for milling a hole in casing
01/1998
01/29/1998WO1998003772A1 Spiral-shaped roller cutter and tunnel excavator cutter head provided with same
01/22/1998WO1998002638A1 Apparatus and method for performing imaging and downhole operations at work site in wellbores
01/21/1998EP0819829A2 Apparatus for completing a subterranean well and method of using same
01/21/1998EP0819828A2 Apparatus for completing a subterranean well and method of using same
01/21/1998EP0819827A2 Apparatus for completing a subterranean well and method of using same
01/21/1998EP0819826A2 Apparatus for completing a subterranean well and methods of using same
01/21/1998EP0819825A2 Apparatus for completing a subterranean well and method of using same
01/21/1998EP0819824A2 Method of completing a subterranean well
01/21/1998EP0819823A2 Apparatus for completing a subterranean well and method of using same
01/21/1998EP0819822A2 Apparatus for completing subterranean well and method of using same
01/21/1998EP0819821A2 Apparatus for completing a subterranean well and method of using same
01/21/1998EP0579660B1 Plumbling apparatus
01/20/1998US5709269 Dissolvable grip or seal arrangement
01/20/1998US5709265 Wellbore window formation
01/20/1998CA2181668A1 Method of abandonment of an oil well
01/17/1998CA2209874A1 Improved thru tubing whipstock and method
01/15/1998CA2209958A1 Apparatus for completing a subterranean well and associated methods of using same
01/15/1998CA2209955A1 Apparatus for completing a subterranean well and associated methods of using same
01/15/1998CA2209797A1 Apparatus for completing a subterranean well and associated methods of using same
01/15/1998CA2208814A1 Apparatus for completing a subterranean well and associated methods of using same
01/15/1998CA2208813A1 Apparatus for completing a subterranean well and associated methods of using same
01/08/1998WO1998000626A1 Method for expanding a steel tubing and well with such a tubing
01/07/1998EP0815345A1 Milling tool, whipstock, milling system and method of forming a window in the wall of a tubular
1 ... 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58