| 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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| 02/20/2013 | CN102168530B Pressure drilling device for a drill stem and a using method thereof |
| 02/19/2013 | US8376055 Shearing tool and methods of use |
| 02/19/2013 | US8376040 Cutting device and a method for emergency cutting of a line in a well |
| 02/19/2013 | CA2682316C Apparatus and methods of milling a restricted casing shoe |
| 02/19/2013 | CA2563738C System and vessel for supporting offshore fields |
| 02/14/2013 | WO2013022691A2 Multilateral location and orientation assembly |
| 02/14/2013 | US20130037269 Method and apparatus for releasing a coiled tubing internal conduit from a bottom hole assembly |
| 02/13/2013 | CN202731801U Spherical open-hole drift size gauge tool |
| 02/13/2013 | CN202731799U Multifunctional casing shaping tool |
| 02/13/2013 | CN202731798U Well wall trimmer |
| 02/13/2013 | CN102926696A Sleeve repairing device |
| 02/13/2013 | CN101988376B Rotating nipple for hydraulic shaping |
| 02/12/2013 | US8371368 Well assembly with a millable member in an opening |
| 02/07/2013 | WO2013019809A1 Extended whipstock and mill assembly |
| 02/07/2013 | US20130032351 Releasable connections for subsea flexible joints and service lines |
| 02/07/2013 | US20130032326 Isolated shearing mechanism for downhole tools |
| 02/07/2013 | DE102011052399A1 Verfahren und Vorrichtung zum Abtrennen von Rohren Method and apparatus for separating pipes |
| 02/07/2013 | CA2843600A1 Extended whipstock and mill assembly |
| 02/06/2013 | CN202718647U Abandonment tool capable of being locked on position |
| 02/06/2013 | CN102913168A Hydraulic sleeve shaper |
| 02/06/2013 | CN102913167A Concave bottom mill shoe |
| 02/06/2013 | CN102913166A Method for drilling and milling sliding sleeves and ball seats of horizontal well by continuous oil pipe |
| 02/06/2013 | CN101979818B Hydraulic reshaper |
| 01/31/2013 | US20130025885 Downhole Line Tool Assembly and Method for Use Thereof |
| 01/31/2013 | US20130025864 Whipstock assembly and method for low side exit |
| 01/31/2013 | CA2842541A1 Ball valve |
| 01/30/2013 | EP2550426A1 Manifold string for selectively controlling flowing fluid streams of varying velocities in wells from a single main bore |
| 01/30/2013 | EP2550422A1 Pressure controlled well construction and operation systems and methods usable for hydrocarbon operations, storage and solution mining |
| 01/30/2013 | CN202706970U Expansion bellows device |
| 01/30/2013 | CN101555775B Pilot milling cone tool for repairing casing and method thereof |
| 01/29/2013 | US8360156 Method and apparatus for preventing spillage or loss of drill fluids |
| 01/24/2013 | US20130020084 Affixation and release assembly for a mill and method |
| 01/23/2013 | EP2547858A1 Section mill and method for abandoning a wellbore |
| 01/23/2013 | CN202689983U Starter mechanical internal cutter |
| 01/23/2013 | CN102889065A Through diameter process of vertical pipe |
| 01/23/2013 | CN102889064A Method for fixing underground corrugated pipe |
| 01/22/2013 | CA2724565C Cutting windows for lateral wellbore drilling |
| 01/17/2013 | WO2012158372A3 Tubular cutting with a sealed annular space and fluid flow for cuttings removal |
| 01/16/2013 | CN202673217U Oil tube cutter |
| 01/16/2013 | CN102877808A Method for treating well blockage through camera positioning and sectioning blasting |
| 01/15/2013 | US8355623 Temperature limited heaters with high power factors |
| 01/15/2013 | US8353338 Well bore control valve |
| 01/10/2013 | WO2012158370A3 Tubular cutting with debris filtration |
| 01/10/2013 | WO2012138904A3 System and method for coupling a drill bit to a whipstock |
| 01/09/2013 | EP2542757A1 Device for remote-controlled, submarine machining unit |
| 01/09/2013 | CN202659194U Novel well wall restoring device with combined sleeve and corrugated pipe |
| 01/09/2013 | CN202659193U Anti-hole shrinkage sleeving mill shoe |
| 01/09/2013 | CN102003169B Method for repairing accident well of coal bed methane multi-branch horizontal well |
| 01/08/2013 | CA2783098A1 Electromechanical assembly for connecting a series of perforating guns in oil and gas wells |
| 01/08/2013 | CA2467381C Mono diameter wellbore casing |
| 01/03/2013 | US20130000908 System and Method For Fracturing Rock In Tight Reservoirs |
| 01/03/2013 | US20130000907 Milling Assembly |
| 01/03/2013 | US20130000906 Wellbore laser operations |
| 01/02/2013 | EP2539537A2 Tubular assembly |
| 01/02/2013 | CN202645486U Low-pressure expansion reinforcing tool |
| 01/02/2013 | CN202645485U Novel well wall repair pipe string |
| 01/02/2013 | CN202645484U Long-distance seal expansion pipe assembly for oil drilling |
| 01/02/2013 | CN102852479A Special eccentric correcting hanger for casing fracture horizontal workover sleeve |
| 01/02/2013 | CN102852478A Centralizing string and restoring string for horizontal well casing pipe dislocation and restoring process of centralizing string and restoring string |
| 01/02/2013 | CN101389826B Apparatus and method for selective actuation of downhole tools |
| 12/27/2012 | WO2012177315A1 Interventionless set packer and setting method for same |
| 12/27/2012 | WO2012174662A1 Kobe sub with inflow control, wellbore tubing string and method |
| 12/27/2012 | WO2012145488A3 System and method for deploying a downhole casing patch |
| 12/27/2012 | WO2012089999A3 Large gauge concentric underreamer |
| 12/27/2012 | US20120325480 Dual string section mill |
| 12/27/2012 | CA2840046A1 Interventionless set packer and setting method for same |
| 12/27/2012 | CA2837771A1 Kobe sub with inflow control, wellbore tubing string and method |
| 12/25/2012 | US8336612 Severing of downhole tubing with associated cable |
| 12/20/2012 | WO2012173695A1 Modular anchoring sub for use with a cutting tool |
| 12/20/2012 | US20120318509 Modular anchoring sub for use with a cutting tool |
| 12/20/2012 | US20120318493 Pipe Guide Arms for Blind Shear Rams |
| 12/19/2012 | CN202611642U Eccentric reaming mill shoe |
| 12/19/2012 | CN102828716A Sealed type hydraulic driving adjustable speed cutter of oil pipe string with diameter being phi 73mm or greater |
| 12/19/2012 | CN102828715A Hydraulic cutting knife component with centralizing structure of mechanical cutting knife |
| 12/19/2012 | CN102828714A Milling shoe for oil drilling and production |
| 12/18/2012 | US8333243 Tensioner anti-rotation device |
| 12/18/2012 | CA2576138C Method and apparatus for a monodiameter wellbore, monodiameter casing, monobore, and/or monowell |
| 12/13/2012 | WO2012170806A1 Dual string section mill |
| 12/13/2012 | US20120312561 Tubular assembly |
| 12/12/2012 | CN202596633U Tool for expandable casing in open hole section |
| 12/12/2012 | CN101550810B Outer suspension positioning mechanism of an underwater cutting tool |
| 12/12/2012 | CN101493002B Control system communication and lock open tool and method for locking open a safety valve and communicating with surface |
| 12/11/2012 | US8327931 Multi-component disappearing tripping ball and method for making the same |
| 12/11/2012 | US8327926 Method for removing a consumable downhole tool |
| 12/11/2012 | CA2634946C Dual-bop and common riser system |
| 12/11/2012 | CA2589672C Abrasive jet cutting system and method for cutting wellbore tubulars |
| 12/06/2012 | WO2012164023A1 Downhole tubing cutter tool |
| 12/06/2012 | WO2012135101A3 Perforating gun and arming method |
| 12/06/2012 | US20120305253 Sealing devices for sealing inner wall surfaces of a wellbore and methods of installing same in a wellbore |
| 12/06/2012 | US20120305251 Method and device for closing a well in the ground |
| 12/06/2012 | US20120305249 Method and system for abandoning a borehole |
| 12/06/2012 | CA2837958A1 Downhole tubing cutter tool |
| 12/05/2012 | EP2530238A1 Downhole tubing cutter tool |
| 12/05/2012 | CN202578603U Columnar milling shoe |
| 12/05/2012 | CN202578602U Fish top trimmer |
| 12/05/2012 | CN202578601U Impact-milling-type sleeve milling barrel |
| 12/05/2012 | CN202578600U Internal tooth mill shoe |
| 12/05/2012 | CN202578599U Integral washover pipe |
| 12/04/2012 | US8322449 Consumable downhole tools |
| 12/04/2012 | US8322448 Device for plug removal |