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)
05/2014
05/13/2014US8720565 Tubular severing system and method of using same
05/13/2014US8720564 Tubular severing system and method of using same
05/13/2014CA2776158C Wellbore milling tool with wear pad
05/08/2014US20140124215 Convertible Downhole Devices
05/08/2014US20140124202 Casing cutter
05/08/2014US20140124201 Nozzle Selective Perforating Jet Assembly
05/08/2014US20140124199 Tubular Assembly and Method of Deploying A Downhole Device Using A Tubular Assembly
05/08/2014US20140124191 Downhole tubing cutter tool
05/07/2014CN203584351U 一种带导流肋板的高效耐磨铣鞋 A band of highly wear resistant shoes milling guide ribs
05/07/2014CN203584350U 一种反循环套铣筒 An anti-cylinder cycle Washover
05/07/2014CN103775015A 套管井下膨胀工具及使用其膨胀套管方法 Downhole casing expansion tool and method of use of its expansion sleeve
05/07/2014CN103775014A 一种油田井下磨铣用磨鞋及其制作方法 One kind of oilfield downhole milling with grinding shoes and its production method
05/07/2014CN103774992A 套管井下膨胀工具的驱动装置 Drive means of the expansion tool downhole casing
05/06/2014US8714268 Method of making and using multi-component disappearing tripping ball
05/06/2014US8714261 Subsea deployment of submersible pump
05/06/2014US8714252 Shock load mitigation in a downhole perforation tool assembly
05/06/2014US8714251 Shock load mitigation in a downhole perforation tool assembly
05/06/2014CA2582794C Coil tubing shear for a coil tubing injector
05/01/2014WO2014066064A1 Erodable bridge plug in fracturing applications
05/01/2014WO2014063950A1 Method and device for lining a well using hydroforming
05/01/2014US20140116717 Valve system
04/2014
04/30/2014EP2723977A1 Interventionless set packer and setting method for same
04/30/2014EP2723975A1 Extended whipstock and mill assembly
04/30/2014CN203570245U Chemical cutter
04/30/2014CN203570244U Small-size screw drill transmission shaft assembly for casing window of high-inclination well
04/30/2014CN203570243U Staggered scraper drill bit
04/30/2014CN203570242U Grind shoe for drilling and grinding ball valve
04/30/2014CN103764940A Cable compatible rig-less operable annuli engagable system for using and abandoning a subterranean well
04/30/2014CN103758477A Expansion cone with TiN or TiAlN film and machining method thereof
04/29/2014CA2734196C Well assembly with recesses facilitating branch wellbore creation
04/24/2014WO2014062180A1 Gravel packing apparatus having a jumper tube protection assembly
04/23/2014EP2721247A1 Kobe sub with inflow control, wellbore tubing string and method
04/23/2014CN203559847U Novel multifunctional casing joint patching device
04/23/2014CN203559846U Multifunctional self-sealing patching device for casing
04/23/2014CN203559845U Multifunctional casing joint patching device
04/23/2014CN103742094A Wear-resistant expansion cone and machining method thereof
04/23/2014CN103742093A Bionic abrasion-resistant expansion cone and manufacturing method thereof
04/23/2014CN103742092A Expansion pipe completing tool
04/17/2014WO2013055381A3 Insensitive explosive composition and method of fracturing rock using an extrudable form of the composition
04/17/2014US20140102705 Apparatus and method for abrasive jet perforating
04/16/2014EP2718534A1 Dual string section mill
04/16/2014EP2718533A2 Tubular assembly and method of deploying a downhole device using a tubular assembly
04/16/2014CN203547627U Expanding and dragging integrated expansion pipe patch tool
04/16/2014CN203547626U Draw bar type expansion structure
04/16/2014CN203547625U Expansion pipe thread structure
04/16/2014CN203547624U Expansion pipe scooping bottom plug with elastic claw
04/16/2014CN203547623U Diameter-slightly-changeable expansion tool
04/16/2014CN203547622U Special casing pipe brush for repairing and connecting casing pipe
04/16/2014CN203547621U Drifting tool with sidewall trimming function
04/16/2014CN203547620U Device for conveying jet cutter used in through well drilling sticking process
04/15/2014US8695714 Easy drill slip with degradable materials
04/10/2014WO2013116094A3 Limited depth abrasive jet cutter
04/10/2014US20140096966 Method and Apparatus for Completion of Heavy Oil Unconsolidated Sand Reservoirs
04/10/2014US20140096947 Cutting and Pulling Tool with Double Acting Hydraulic Piston
04/09/2014EP2715057A2 Window joint for lateral wellbore construction and method for opening same
04/09/2014CN203531817U Expansion tube tool
04/09/2014CN203531816U Expansion construction tool for solid expandable pipe
04/09/2014CN203531765U Expansion corn locking mechanism
04/08/2014CA2767537C Downhole casing cutting tool
04/08/2014CA2735916C Narrow well bore
04/08/2014CA2724581C Casing exit joint with easily milled, low density barrier
04/08/2014CA2558424C Extracting and processing hydrocarbon-bearing formations
04/03/2014WO2014052404A1 Secondary system and method for activating a down hole device
04/03/2014WO2014052372A2 Downhole mills and improved cutting structures
04/02/2014CN203515421U Semicircular milling bit
04/02/2014CN203515420U One-time drilling inclination survey and windowing device
04/02/2014CN103696718A Method and device for repairing double-clamping-sleeve of expansion pipe of long section of casing damage well in layered partition manner
04/01/2014US8684094 Preventing flow of undesired fluid through a variable flow resistance system in a well
04/01/2014US8684084 Method and apparatus for selective down hole fluid communication
03/2014
03/27/2014WO2014047237A1 In situ polymerization for completions sealing or repair
03/27/2014US20140083716 Isolation tool
03/26/2014EP2710218A1 Cutting device safety valve, method and uses for severing a pipe-string-related object in a safety valve for a well
03/26/2014CN203499632U Small casing pipe suspending repair process tubular column of casing damage horizontal well
03/26/2014CN103670316A Hydraulic power cutter
03/25/2014US8678088 Method and apparatus to position and protect control lines being coupled to a pipe string on a rig
03/25/2014CA2755542C System and method for opening a window in a casing string for multilateral wellbore construction
03/19/2014CN203488134U Loosening blasting type drill tool sticking processing device for bored pile construction at karst areas
03/19/2014CN103643915A Composite casing cutter head for well repair in oil field
03/19/2014CN103643914A Multifunctional bushing self-sealing repair and connection device
03/19/2014CN103643901A Directional joint for well repairing and bushing removing in oil field
03/18/2014US8672041 Convertible downhole devices
03/13/2014US20140069647 Cased Hole Chemical Perforator
03/12/2014CN203476269U Intelligent type electric control casing pipe shaper
03/12/2014CN103628837A Multifunctional novel patching connector for casing joint
03/12/2014CN103628836A Multifunctional casing coupling repairing and connecting device
03/06/2014WO2014036430A2 Reduced mechanical energy well control systems and methods of use
03/06/2014US20140060802 Method and apparatus for delivering high power laser energy over long distances
03/06/2014US20140060801 Preload and Centralizing Device for Milling Subterranean Barrier Valves
03/05/2014CN203463057U Oil field drilling and milling tool
03/04/2014US8662182 Methods and apparatus for subsea well intervention and subsea wellhead retrieval
02/2014
02/26/2014CN203452705U Casing pipe patching device
02/26/2014CN203452704U Microseism exploder for oil and gas well
02/25/2014US8657018 Circulating sub
02/25/2014US8657006 Oil well plug and abandonment method
02/25/2014US8657001 Downhole release joint
02/20/2014WO2014028713A2 Replaceable wear plates for use with blind shear rams
02/20/2014US20140048248 Control line running system
02/20/2014US20140048245 Replaceable Wear Plates for Use with Blind Shear Rams
02/19/2014EP2697551A1 Tubing reshaping method and apparatus
02/19/2014EP2697475A1 Opening a conduit cemented in a well
1 2 3 4 5 6 7 8 9 10 11 12 13 14 ... 58