| 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) |
|---|
| 07/24/2013 | EP2616636A1 Pump down liner expansion method |
| 07/24/2013 | EP2616632A2 Casing friendly, shearable hardbands and systems and methods for shearing same |
| 07/24/2013 | CN203081374U Rotary shock type sleeve tube reshaping device |
| 07/24/2013 | CN203081373U Replaceable flat milling shoes |
| 07/24/2013 | CN203081372U Blunt milling type case milling drum |
| 07/24/2013 | CN203081371U Separated type casing milling barrel |
| 07/24/2013 | CN103216204A Tool for repairing oil-water well inward concave sleeve |
| 07/24/2013 | CN101107420B Temperature limited heaters used to heat subsurface formations |
| 07/23/2013 | US8490702 Downhole tool assembly with debris relief, and method for using same |
| 07/23/2013 | CA2701371C Cutting structures for earth-boring drill bits |
| 07/18/2013 | WO2013104069A1 Fluid or slurry pulsing casing/liner shoe |
| 07/17/2013 | CN101460699B A method and apparatus for patching a well by hydroforming a tubular metal patch, and a patch for this purpose |
| 07/11/2013 | US20130175044 Retrievable subsea device and method |
| 07/10/2013 | CN203050590U Oil field casing restoring and truing device |
| 07/10/2013 | CN203050589U Casing repair device |
| 07/10/2013 | CN203050588U Back-connecting sleeve milling shoe with reinforced structure |
| 07/10/2013 | CN203050587U Mill shoe with tie-back drum capable of being washed conveniently |
| 07/10/2013 | CN203050586U Pipe cutter |
| 07/10/2013 | CN103195387A Downhole radial casing window opener |
| 07/10/2013 | CN101942979B Anchoring ball type casing truing unit and truing method thereof |
| 07/10/2013 | CN101886529B Technique for repairing fault broken well and opening up passage |
| 07/10/2013 | CN101429848B Method and apparatus for hydraulic jet side drilling for radial branching borehole |
| 07/04/2013 | US20130168076 Milling Tool |
| 07/04/2013 | US20130168075 Shear blade and method of attachment to shear rams |
| 07/03/2013 | EP2609284A1 Subsea well safing system |
| 07/03/2013 | CN203035147U Casing repair and expanding milling cutter |
| 07/03/2013 | CN203035146U Multi-stage variable milling taper repairing casing |
| 07/03/2013 | CN203035145U Fishable bottom plug and fishing tool for expansion pipe |
| 07/03/2013 | CN203035144U Mill shoe used for cleaning tieback tube |
| 07/03/2013 | CN203035143U Tie-back tube mill shoe with good guidance quality |
| 07/02/2013 | US8474543 Method and apparatus for controlling the flow of fluids from a well below the surface of the water |
| 07/02/2013 | US8474537 High capacity wellhead connector having a single annular piston |
| 07/02/2013 | CA2646563C Tubing anchor |
| 07/02/2013 | CA2639848C Variable diameter pipe expander |
| 06/27/2013 | WO2013095427A1 Downhole fluid flow control system having temporary sealing substance and method for use thereof |
| 06/27/2013 | WO2013095154A1 A well completion arrangement and a method for preparing a well for abandonment |
| 06/27/2013 | US20130161024 Downhole Fluid Flow Control System Having Temporary Sealing Substance and Method for Use Thereof |
| 06/27/2013 | US20130161023 Standalone Liquid Level Sensing Apparatus for Tensioner System |
| 06/27/2013 | US20130161007 Pulse detonation tool, method and system for formation fracturing |
| 06/27/2013 | US20130160999 Sealing system |
| 06/27/2013 | CA2852051A1 Downhole fluid flow control system having temporary sealing substance and method for use thereof |
| 06/27/2013 | CA2799967A1 Downhole fluid treatment tool |
| 06/26/2013 | EP2607610A2 Shear blade with enhanced toughness for ram-type blowout preventer |
| 06/26/2013 | CN203022671U Multipurpose milling shoe |
| 06/26/2013 | CN203022670U Efficient flat-bottom grinding shoe with ball centralizers and blades |
| 06/26/2013 | CN102278070B Drilling pressure stabilizer |
| 06/26/2013 | CN101812980B Expansion tube assembly, oil well subsidy construction mechanism and construction method |
| 06/25/2013 | US8469097 Subterranean tubular cutter with depth of cut feature |
| 06/20/2013 | US20130153227 Slickline or Wireline Run Hydraulic Motor Driven Mill |
| 06/20/2013 | US20130153204 Ram bop shear blade process to enhance the toughness |
| 06/20/2013 | US20130153203 Subterranean Tool with Shock Absorbing Shear Release |
| 06/19/2013 | CN101994496B Method for treating drilling tool jamming accident in coalbed methane multi-branch horizontal well |
| 06/18/2013 | CA2564515C Temperature limited heaters used to heat subsurface formations |
| 06/18/2013 | CA2563585C Reducing viscosity of oil for production from a hydrocarbon containing formation |
| 06/18/2013 | CA2563583C Temperature limited heaters used to heat subsurface formations |
| 06/12/2013 | CN202990925U Drillable pasting and plugging mud injection device |
| 06/12/2013 | CN103154432A Wellbore tubular cutter |
| 06/12/2013 | CN103147711A Grinding and milling tool for oil well or water well and using method thereof |
| 06/12/2013 | CN103147710A Shaking and blockage removing device for pulverized coal at bottom of coal-bed gas well |
| 06/11/2013 | US8459358 Cutting dart and method of using the cutting dart |
| 06/11/2013 | US8459357 Milling system and method of milling |
| 06/06/2013 | US20130140026 Oil well plug and abandonment method |
| 06/06/2013 | US20130140023 Assemblies and methods for minimizing pressure-wave damage |
| 06/05/2013 | CN202970574U Combined reducing expansion cone of expansion tube |
| 06/05/2013 | CN202970573U Combined reducing expansion cone of expansion tube |
| 06/05/2013 | CN202970572U Separation device for pasting blocking tool |
| 06/05/2013 | CN202970571U Pasting blocking filter tube |
| 06/05/2013 | CN202970570U High temperature resistant bimetal expansion pipe sealing structure |
| 06/05/2013 | CN202970569U Section milling cave-building tool of coal bed gas |
| 06/04/2013 | US8453737 Diameter based tracking for window milling system |
| 06/04/2013 | US8453723 Control of well tools utilizing downhole pumps |
| 05/30/2013 | WO2013077976A1 Rotary fluid jet cutter |
| 05/30/2013 | US20130133889 Selectable, internally oriented and/or integrally transportable explosive assemblies |
| 05/28/2013 | US8448709 Method of killing an uncontrolled oil-gas fountain appeared after an explosion of an offshore oil platform |
| 05/23/2013 | WO2013073949A1 Apparatus and method for cutting and pulling of casing |
| 05/23/2013 | US20130126168 Rotary Fluid Jet Cutter |
| 05/23/2013 | CA2850915A1 Apparatus and method for cutting and pulling of casing |
| 05/22/2013 | CN202946074U Dedicated corrector for sleeve offsetting horizontal wells |
| 05/22/2013 | CN202946073U Concave bottom junk mill |
| 05/22/2013 | CN103114821A Pipe shearing remote maintenance unit and process in deep-well radiation environment |
| 05/16/2013 | US20130118759 Agents for enhanced degradation of controlled electrolytic material |
| 05/16/2013 | US20130118727 Window Joint for Lateral Wellbore Construction |
| 05/15/2013 | CN202937212U Top multistage pressure bearing type expandable construction device for expandable pipes |
| 05/14/2013 | CA2492981C Monobore wellbore and method for completing same |
| 05/10/2013 | WO2013066340A1 Methods of severing an object from the outside using heat evolved from an exothermic reaction |
| 05/09/2013 | US20130112429 Enhanced electrolytic degradation of controlled electrolytic material |
| 05/09/2013 | US20130112393 Ultra high pressure hydraulic sublevel pipe cutter |
| 05/08/2013 | CN103097647A Sealing system |
| 05/08/2013 | CN103089193A Tail pipe completion method by plugging expandable casing on top of screen pipe |
| 05/08/2013 | CN103089186A Plug-in type expansion head |
| 05/08/2013 | CN103089185A Operating device and method for constant-borehole-diameter expandable casing |
| 05/08/2013 | CN103089184A Folding type diameter-variable expansion tool for expansion tube |
| 05/08/2013 | CN103089183A Double bellmouth type expansion sleeve packing tool and operating method thereof |
| 05/08/2013 | CN103089182A Well completion method for tail pipe combining expansion sleeve pipe and expansion sieve pipe |
| 05/08/2013 | CN103089181A Hydraulic cutter in pipe |
| 05/08/2013 | CA2833992A1 Ported packer |
| 05/07/2013 | US8434559 High strength dissolvable structures for use in a subterranean well |
| 05/02/2013 | WO2013059873A1 A downhole tool |
| 05/02/2013 | CA2853510A1 A downhole tool |
| 05/01/2013 | CN202914074U Horizontal well open hole filling wiper trip testing tool |