| 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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| 11/06/2013 | CN203271652U Mathematically optimized two-stage double-shoulder flush joint high torsional washover pipe |
| 11/06/2013 | CN203271651U Cutting tool in submersible pump riser of deep well |
| 11/06/2013 | CN102510969B Device for redirecting the flow of a fluid in a first pipe or tube to at least a second pipe, tube or hose without stopping the flow of the fluid |
| 11/06/2013 | CN101573506B Offshore universal riser system |
| 11/05/2013 | US8575945 Subsea line monitoring device |
| 11/05/2013 | US8575074 Insensitive explosive composition and method of fracturing rock using an extrudable form of the composition |
| 11/05/2013 | US8573308 Riser centralizer system (RCS) |
| 11/05/2013 | US8573295 Plug and method of unplugging a seat |
| 11/05/2013 | CA2748994C Downhole hydraulic jetting assembly, and method for stimulating a production wellbore |
| 10/31/2013 | US20130284458 Wellbore Casing Section with Moveable Portion for Providing a Casing Exit |
| 10/31/2013 | US20130284446 Subsea telescoping and rotatable sub |
| 10/31/2013 | US20130284441 Downhole severing tool |
| 10/30/2013 | CN203257358U Continuous oil pipe high-efficiency milling shoe |
| 10/30/2013 | CN103375141A Expansion device of expansion pipe |
| 10/30/2013 | CN103375140A Radial horizontal well orienting device and method for operating same |
| 10/30/2013 | CN101316980B System and method for performing multiple downhole operations |
| 10/24/2013 | US20130277040 Milling Assembly |
| 10/22/2013 | US8561683 Wellbore tubular cutter |
| 10/17/2013 | WO2012082304A3 Autonomous downhole conveyance system |
| 10/16/2013 | CN203239263U Maintaining device for oil well casing |
| 10/16/2013 | CN203239262U Perpendicular-acting radial-feed double-tool-bit pipe cutter in hole |
| 10/10/2013 | WO2013151541A1 Casing window assembly |
| 10/09/2013 | CN103343674A Pear-shaped milling shoes for petroleum drilling |
| 10/08/2013 | CA2563592C Temperature limited heaters with thermally conductive fluid used to heat subsurface formations |
| 10/03/2013 | US20130255968 Casing Window Assembly |
| 10/02/2013 | EP2643544A1 Downhole punch component |
| 10/02/2013 | CN103334711A Electronically-controlled underground casing windowing tool |
| 09/26/2013 | US20130248174 Autonomous Downhole Conveyance System |
| 09/25/2013 | EP2640930A1 Kobe sub, wellbore tubing string apparatus and method |
| 09/25/2013 | CN103328760A Subsea clamp connector emergency release tool and method |
| 09/24/2013 | US8540028 Autonomous junk collecting sleeve for a riser |
| 09/24/2013 | US8540027 Method and apparatus for selective down hole fluid communication |
| 09/22/2013 | CA2810139A1 Multizone and zone-by-zone abrasive jetting tools and methods for fracturing subterranean formations |
| 09/18/2013 | CN203201513U Repair tool of deformed casing pipe in oil-water well |
| 09/18/2013 | CN203201512U Two-section well wall repair device used for oil-water well |
| 09/18/2013 | CN203201511U Repair tool of concave casing pipe of oil-water well |
| 09/18/2013 | CN203201510U Well wall repairing mechanism preventing stress concentration |
| 09/18/2013 | CN203201509U Multistage combined steel ball shaper |
| 09/18/2013 | CN103314176A Gate valve assembly |
| 09/17/2013 | US8534380 System and method for directional drilling a borehole with a rotary drilling system |
| 09/17/2013 | US8534367 Wireline pressure setting tool and method of use |
| 09/12/2013 | WO2013134629A1 Casing cutting tool, with stabilizing structure |
| 09/12/2013 | WO2013134320A2 Apparatus and methods of running an expandable liner |
| 09/12/2013 | WO2013134317A2 Apparatus and method for completing a wellbore |
| 09/12/2013 | WO2013133718A1 Method for removal of casings in an underground well |
| 09/12/2013 | US20130233548 Apparatus and method for completing a wellbore |
| 09/11/2013 | EP2635762A2 Redundant position reference system for multilateral exit construction and method for use of same |
| 09/11/2013 | CN203188952U Special-effect grinding shoe |
| 09/11/2013 | CN103299026A Shape memory material packer for subterranean use |
| 09/11/2013 | CN103291238A Secondary expansion patching device passing through patching pipe |
| 09/10/2013 | US8528644 Apparatus and method for milling casing in jet drilling applications for hydrocarbon production |
| 09/10/2013 | US8528630 Through tubing cable rotary system |
| 09/04/2013 | CN203175447U Expansion pipe twin-stage expansion device |
| 09/04/2013 | CN203175446U Sleeve tube soft hole-opening tool |
| 09/04/2013 | CN203175445U Well mouth pressurization plug drilling device |
| 09/03/2013 | US8522863 Propellant fracturing system for wells |
| 08/29/2013 | WO2013126572A1 System and method for enhanced sealing of well tubulars |
| 08/29/2013 | WO2013126358A1 Riser cutting tool |
| 08/29/2013 | WO2013126081A1 Internal tubing cutter |
| 08/29/2013 | WO2013126070A1 Protection of casing lowside while milling casing exit |
| 08/29/2013 | WO2013126065A1 Anchor assembly |
| 08/29/2013 | US20130220631 Well emergency separation tool for use in separating a tubular element |
| 08/29/2013 | US20130220628 High-Pressure Cap Equalization Valve |
| 08/29/2013 | US20130220615 Internal tubing cutter |
| 08/28/2013 | CN203161148U Special reamer for coiled tubing |
| 08/28/2013 | CN203161147U Milling tool used for oil well or water well |
| 08/28/2013 | CN203161144U Oil well casing patch matching tool |
| 08/28/2013 | CN102322234B Sliding block guiding hydraulic cutting knife |
| 08/27/2013 | US8517691 Apparatus/method for temperature controlled methanol injection in oil and gas production streams |
| 08/22/2013 | WO2013122480A1 Method for establishment of a new well path from an existing well |
| 08/22/2013 | US20130213719 Thru-tubing mill |
| 08/22/2013 | US20130213641 System and Method for Casing Milling |
| 08/22/2013 | DE112011103401T5 Verfahren zur Ausdehnung mittels eines abwärts zu pumpenden Gesenks Method of extending downward to be pumped by means of a die |
| 08/15/2013 | US20130206748 Mineral insulated skin effect heating cable |
| 08/15/2013 | US20130206426 Expandable casing patch |
| 08/14/2013 | CN203130007U Unfreezing introducer for packer |
| 08/14/2013 | CN203130006U Combined ball pipe expander |
| 08/13/2013 | CA2812352C Redundant position reference system for multilateral exit construction and method for use of same |
| 08/08/2013 | US20130199785 Multi-cycle pipe cutter and related methods |
| 08/08/2013 | US20130199784 Extended whipstock and mill assembly |
| 08/07/2013 | CN203114222U Washover shoe with drainage channel |
| 08/07/2013 | CN103233696A Two-section repairing mechanism for repairing well wall |
| 08/06/2013 | US8499834 Milling tool for establishing openings in wellbore obstructions |
| 08/06/2013 | CA2655646C Well cleanup tool with real time condition feedback to the surface |
| 08/01/2013 | US20130192842 Method and Apparatus to Perform Subsea or Surface Jacking |
| 08/01/2013 | US20130192815 Device for drilling through a formation |
| 07/31/2013 | EP2619411A2 Wellbore tubular cutter |
| 07/31/2013 | CN203097790U Sleeve pit hydraulic restorer |
| 07/31/2013 | CN203097789U Falling object protective cap used for underground expansion pipe |
| 07/31/2013 | CN203097788U Top-down pull rod type expansion pipe structure |
| 07/31/2013 | CN203097787U Casing mandrel with conical rollers |
| 07/31/2013 | CN203097786U Split-type cutting milling tool |
| 07/31/2013 | CN203097785U Four-blade mill shoe |
| 07/31/2013 | CN203097784U High-strength abrasion-resistant grind shoe suitable for petroleum and gas well head device |
| 07/31/2013 | CN203097783U Movable type grinding shoe |
| 07/31/2013 | CN203097782U Connecting rod structure of dismountable expansion cone |
| 07/31/2013 | CN203097781U Special milling tool for multilateral well |
| 07/31/2013 | CN103228863A Downhole punch component |
| 07/31/2013 | CN102516963B Chemical composite resin mounting agent for oil-water well casing restoration |
| 07/31/2013 | CN102041974B Bypass short-circuit structure of abandoned deep water well cutting device and cementing plug method thereof |