| 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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| 09/13/2012 | US20120227974 Method and apparatus for pulling a crown plus |
| 09/13/2012 | CA2828717A1 Method and system of drilling laterals in shale formations |
| 09/12/2012 | CN101660394B Single core cable oil field deep well dredging instrument |
| 09/11/2012 | US8261828 Optimized machining process for cutting tubulars downhole |
| 09/05/2012 | CN202417375U Hydraulic expansion type grind shoe |
| 09/05/2012 | CN202417374U Cyanogen coagulation type fracture stabilizer |
| 09/05/2012 | CN202417373U Underground cutter |
| 09/05/2012 | CN202417372U Milling shoe for milling high pressure glass reinforced plastic oil tubes |
| 09/05/2012 | CN202417366U Anchoring and sitting hanging device of expansion restoration pipe embedded with slip sleeves |
| 09/05/2012 | CN202417310U Hollow whipstock for sidetrack drilling of branch wells |
| 09/04/2012 | US8256521 Consumable downhole tools |
| 09/04/2012 | US8256516 System and method for providing a downhole mechanical energy absorber |
| 08/30/2012 | WO2012116079A2 Subsea conductor anchor |
| 08/30/2012 | US20120217017 Laser assisted system for controlling deep water drilling emergency situations |
| 08/30/2012 | US20120217015 Laser assisted riser disconnect and method of use |
| 08/29/2012 | CN202401998U High-efficiency drilling and reaming milling cone |
| 08/29/2012 | CN102649200A Arrangement method of carbide blades on well drilling inside cutter bit and cutter bit |
| 08/23/2012 | US20120211232 Subsea conductor anchor |
| 08/23/2012 | US20120211217 Control line running system |
| 08/22/2012 | CN202391371U Casing milling assembly for petroleum drilling |
| 08/22/2012 | CN202391370U High temperature resistant expansion tubular column for oil drilling |
| 08/22/2012 | CN202391369U Metal sealed expansion pipe used in petroleum drilling and production |
| 08/22/2012 | CA2748994A1 Downhole hydraulic jetting assembly, and method for stimulating a production wellbore |
| 08/21/2012 | US8245785 Method and apparatus for lateral well drilling with biased length adjusting casing cutter |
| 08/21/2012 | US8245774 Whipstock assembly for forming a window within a wellbore casing |
| 08/21/2012 | CA2683103C Method and apparatus for expanding and separating tubulars in a wellbore |
| 08/16/2012 | WO2012108775A1 Subsea clamp connector emergency release tool and method |
| 08/16/2012 | US20120205118 Workover riser compensator system |
| 08/16/2012 | US20120205108 Apparatus and method for abrasive perforating and cleanout using a multi-cycle open/close valve |
| 08/15/2012 | EP2486220A1 Cutting tool inserts |
| 08/15/2012 | CN202381011U Integrated multipurpose drift size gauge tool |
| 08/15/2012 | CN202381010U Plug-in type expansion head |
| 08/15/2012 | CN202381009U Hydraulic machinery inner cutter body cutting device |
| 08/15/2012 | CN202381008U Split expansion cone |
| 08/15/2012 | CN102635323A Moveable combination of guide rod and milling cone |
| 08/15/2012 | CN102635322A Tool for expandable casing in open hole section |
| 08/09/2012 | WO2012106452A2 Coiled tubing module for riserless subsea well intervention system |
| 08/09/2012 | WO2012106044A2 Full gauge milling bottom hole assembly with optimal contact force and build rate capability |
| 08/09/2012 | US20120199351 Method for removing a consumable downhole tool |
| 08/09/2012 | CA2824737A1 Full gauge milling bottom hole assembly with optimal contact force and build rate capability |
| 08/07/2012 | US8235102 Consumable downhole tool |
| 08/02/2012 | WO2012102618A1 Machining apparatus |
| 08/02/2012 | WO2012078304A3 Methods to manufacture downhole tools with finished features as an integral cage |
| 08/02/2012 | US20120193104 Coiled tubing module for riserless subsea well intervention system |
| 08/02/2012 | US20120193087 Shear Blade Geometry and Method |
| 08/01/2012 | EP2480745A2 A method and apparatus for communicating with a device located in a borehole |
| 08/01/2012 | EP2198111B1 Cutting structures for earth-boring drill bits |
| 08/01/2012 | CN202360054U Correcting and repairing integrated tool for casing-broken horizontal wells |
| 07/31/2012 | US8231947 Oilfield elements having controlled solubility and methods of use |
| 07/26/2012 | US20120186823 Expanding mill having camming sleeve for extending cutting blade |
| 07/26/2012 | US20120186821 Location-and-rotation feedback tool for subsea wellheads and method of operating same |
| 07/26/2012 | US20120186817 Multi-cycle pipe cutter and related methods |
| 07/25/2012 | EP2288472B1 Abrasive cutting fluids |
| 07/25/2012 | CN202348194U Impact type casing damage pipe shaper |
| 07/25/2012 | CN202348193U Radius-variable expansion tool for sleeve damage of oil-gas well |
| 07/25/2012 | CN202348192U Pear-shaped casing roller |
| 07/25/2012 | CN202348191U One-trip window sidetrack drilling tool |
| 07/24/2012 | US8225855 Surface equipment assembly for wellbore cable |
| 07/19/2012 | WO2012097235A1 Disintegrating ball for sealing frac plug seat |
| 07/19/2012 | US20120181012 Downhole Tool Delivery System With Self Activating Perforation Gun |
| 07/18/2012 | CN202338249U Explosive pressure safety opening tool |
| 07/17/2012 | US8220554 Degradable whipstock apparatus and method of use |
| 07/17/2012 | CA2754716C Apparatus and method for severing a wellbore tubular |
| 07/17/2012 | CA2563525C Inhibiting effects of sloughing in wellbores |
| 07/12/2012 | WO2012094488A2 Shape memory material packer for subterranean use |
| 07/12/2012 | WO2012093312A1 Gate valve assembly |
| 07/12/2012 | WO2012061096A3 Redundant position reference system for multilateral exit construction and method for use of same |
| 07/12/2012 | WO2012048157A3 Magnetic leak management apparatus and methods |
| 07/12/2012 | CA2823563A1 Shape memory material packer for subterranean use |
| 07/11/2012 | EP2473700A1 Wellbore servicing compositions and methods of making and using same |
| 07/11/2012 | CN202325238U 一体式开窗侧钻工具 Integrated sidetracking tools |
| 07/11/2012 | CN102562067A Method for controlling rock burst by pulse fracturing |
| 07/11/2012 | CN101818619B Well cementation and completion structure and process for cased branch well with temporarily-sealed opening |
| 07/10/2012 | US8218826 Integrated measurement based on an optical pattern-recognition |
| 07/10/2012 | US8215400 System and method for opening a window in a casing string for multilateral wellbore construction |
| 07/10/2012 | CA2668534C Downhole anchoring tools conveyed by non-rigid carriers |
| 07/05/2012 | WO2012040467A3 Wellbore tubular cutter |
| 07/05/2012 | US20120168168 System and method for connection and installation of underwater lines |
| 07/05/2012 | US20120168152 Dissolvable barrier for downhole use and method thereof |
| 07/04/2012 | EP2288471B1 Method of creating an underwater cutting zone, and related plugging devices and methods |
| 07/04/2012 | CN202300267U 一种定向井取套用滚珠防切套铣头 As a directional well to take the ball to apply the anti-cut jacket Head |
| 07/04/2012 | CN202300266U 等井径膨胀套管的作业装置 Other operations means caliper expandable casing |
| 07/04/2012 | CN202300265U 双喇叭口式膨胀套管封隔工具 Twin bell expander casing packer tool |
| 07/04/2012 | CN202300264U Step type ball pipe expander |
| 07/04/2012 | CN202300263U 滑块导正式液压割刀 Official hydraulic cutter slider guide |
| 07/04/2012 | CN102549230A Cutting tool inserts |
| 07/04/2012 | CN101457637B Sealing expansion tube apparatus for repairing petroleum thermal production well and implementing method |
| 07/03/2012 | US8210251 Slickline conveyed tubular cutter system |
| 07/03/2012 | CA2681812C Downhole cutting tool and method |
| 06/28/2012 | WO2012087712A2 One trip multiple string section milling of subterranean tubulars |
| 06/28/2012 | WO2012054445A3 Expandable casing patch |
| 06/28/2012 | WO2012037248A3 Casing friendly, shearable hardbands and systems and methods for shearing same |
| 06/28/2012 | US20120160505 Load transferring subsea structure |
| 06/28/2012 | US20120160491 Method and design for high shot density perforating gun |
| 06/27/2012 | CN102516963A Chemical composite resin mounting agent for oil-water well casing restoration |
| 06/26/2012 | CA2563589C Inhibiting reflux in a heated well of an in situ conversion system |
| 06/21/2012 | WO2012083016A2 Method and apparatus for controlled or programmable cutting of multiple nested tubulars |
| 06/21/2012 | WO2012047406A4 Subterranean cutting tool structure tailored to intended use |
| 06/21/2012 | US20120152616 Perforating string with bending shock de-coupler |
| 06/21/2012 | US20120152615 Perforating string with longitudinal shock de-coupler |