| 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) |
|---|
| 05/07/2009 | US20090114389 Communication Tool for Accessing a Non Annular Hydraulic Chamber of a Subsurface Safety Valve |
| 05/07/2009 | US20090114382 Shaped charge for acidizing operations |
| 05/06/2009 | CN201232532Y Hydraulic combination window opening tool |
| 05/06/2009 | CN100485158C Expansion pipe device for oilfield well completion |
| 05/05/2009 | US7527108 Portable electrocrushing drill |
| 05/05/2009 | US7527092 Method and apparatus for jet-fluid abrasive cutting |
| 04/30/2009 | WO2009055380A2 Apparatus and method for milling casing in jet drilling applications for hydrocarbon production |
| 04/30/2009 | US20090107670 Downhole Seal Bore Repair Device |
| 04/30/2009 | CA2701725A1 Apparatus and method for milling casing in jet drilling applications for hydrocarbon production |
| 04/28/2009 | CA2350790C Well bore cutting and perforating devices and methods of manufacture |
| 04/23/2009 | WO2008135747A3 Pipe cutting apparatus |
| 04/23/2009 | WO2006086165A3 Flow valve and method |
| 04/21/2009 | US7520331 Dry tree subsea well communications methods using variable tension large offset risers |
| 04/21/2009 | US7520330 System and method for limiting vortex-induced vibrations on an offshore production riser |
| 04/21/2009 | US7520321 Redundant systems for downhole permanent installations |
| 04/16/2009 | WO2009021037A3 Rotating and reciprocating swivel apparatus and method |
| 04/16/2009 | WO2007070305A4 Downhole hydraulic pipe cutter |
| 04/16/2009 | US20090095470 Downhole abrading tools having excessive wear indicator |
| 04/15/2009 | EP2048322A2 An assembly for cutting into a well tubular |
| 04/15/2009 | CN101410587A Expandable tubular assembly |
| 04/14/2009 | US7516795 Subsea petroleum production system method of installation and use of the same |
| 04/14/2009 | US7516794 Pipe separator for the separation of fluids, particularly oil, gas and water |
| 04/14/2009 | US7516790 Mono-diameter wellbore casing |
| 04/14/2009 | CA2497617C Method and apparatus for locating and re-entering one or more horizontal wells using whipstocks |
| 04/09/2009 | CA2701371A1 Cutting structures for earth-boring drill bits |
| 04/08/2009 | CN201218068Y Milling type drifting device |
| 04/07/2009 | US7513752 Beam pump dynamic load monitoring and methods |
| 04/07/2009 | US7513311 Temporary well zone isolation |
| 04/07/2009 | US7513310 Method and arrangement for performing drilling operations |
| 04/07/2009 | US7513309 Apparatus for connecting underwater tubular members |
| 04/07/2009 | US7513308 Tubing running equipment for offshore rig with surface blowout preventer |
| 04/07/2009 | US7513305 Apparatus and methods for operating a tool in a wellbore |
| 04/02/2009 | US20090084551 Reducing pipe expander |
| 04/02/2009 | US20090084535 Apparatus string for use in a wellbore |
| 03/31/2009 | US7510000 Reducing viscosity of oil for production from a hydrocarbon containing formation |
| 03/28/2009 | CA2639848A1 Variable diameter pipe expander |
| 03/26/2009 | US20090078421 System and method for performing well treatments |
| 03/26/2009 | US20090078420 Perforator charge with a case containing a reactive material |
| 03/26/2009 | US20090078402 Tubular Cutting Device |
| 03/25/2009 | EP1738057B1 Subsurface electrical heaters using nitride insulation |
| 03/19/2009 | US20090071640 Device for cutting a vertical slot-like unloading opening |
| 03/18/2009 | CN101389826A Apparatus and method for selective actuation of downhole tools |
| 03/17/2009 | US7503391 Tieback connector |
| 03/11/2009 | CN201206448Y Milling bit for lateral well |
| 03/11/2009 | CN201206426Y Staged drill for drilling rubber plug |
| 03/10/2009 | CA2504247C A method and apparatus for creating a cemented lateral junction system |
| 03/05/2009 | WO2009029400A1 Combination motor casing and spear |
| 03/05/2009 | WO2009028953A1 Method and device for removing the upper portion of a well |
| 03/05/2009 | WO2008154486A3 Multi-deployable subsea stack system |
| 03/04/2009 | CN201202429Y Expansion tube hanging seal device for open hole section |
| 03/03/2009 | US7497260 Junk removal tool |
| 02/26/2009 | US20090050334 Conditioning Ferrous Alloys into Cracking Susceptible and Fragmentable Elements for Use in a Well |
| 02/26/2009 | US20090050310 Combination Motor Casing and Spear |
| 02/24/2009 | US7493969 Drill cuttings conveyance systems and methods |
| 02/24/2009 | CA2376963C Method of creating a weld in a wellbore |
| 02/19/2009 | WO2008131771A3 Cladding method and expansion tool |
| 02/19/2009 | WO2007070305A3 Downhole hydraulic pipe cutter |
| 02/18/2009 | EP2024601A1 A method and apparatus for patching a well by hydroforming a tubular metal patch, and a patch for this purpose |
| 02/17/2009 | US7490672 System and method for processing drilling cuttings during offshore drilling |
| 02/17/2009 | US7490671 Pipe separator with improved separation |
| 02/17/2009 | US7490670 Subsea exploitation device |
| 02/17/2009 | US7490665 Variable frequency temperature limited heaters |
| 02/17/2009 | US7490663 Thread fatigue relief for tool joint |
| 02/17/2009 | CA2534912C Pipe burster with spherical bursting member |
| 02/12/2009 | WO2009021037A2 Rotating and reciprocating swivel apparatus and method |
| 02/12/2009 | WO2009020730A1 Eductor jet bushing for downhole use |
| 02/12/2009 | US20090038802 Packer |
| 02/12/2009 | US20090038138 Protective compression and tension sleeves for threaded connections for radially expandable tubular members |
| 02/11/2009 | EP2022933A2 Downhole valve assembly, actuation device for a downhole valve assembly and method of controlling fluid flow downhole |
| 02/10/2009 | US7487837 Riser rotating control device |
| 02/10/2009 | US7487836 Riserless modular subsea well intervention, method and apparatus |
| 02/10/2009 | US7487835 Method of developing a re-entry into a parent wellbore from a lateral wellbore, and bottom hole assembly for milling |
| 02/10/2009 | US7487834 Methods of using a laser to perforate composite structures of steel casing, cement and rocks |
| 02/10/2009 | US7487833 Safety apparatus for perforating system |
| 02/10/2009 | US7487832 Force transfer apparatus to assist release of loaded member |
| 02/10/2009 | US7487828 Apparatus and method for powering electrical devices along a pipeline |
| 02/10/2009 | CA2451873C Apparatus and method for orientating a downhole control tool |
| 01/29/2009 | US20090025470 Tracer method and apparatus |
| 01/28/2009 | EP2018463A1 A whipstock |
| 01/27/2009 | US7481274 Temperature limited heaters with relatively constant current |
| 01/27/2009 | CA2551923C Method of drilling an enlarged sidetracked well bore |
| 01/27/2009 | CA2479960C Method for installing an expandable coiled tubing patch |
| 01/21/2009 | CN201184156Y Variable radial expanding head for expansion reinforcing |
| 01/21/2009 | CN201184155Y Expansion block of variable radial expansion tool |
| 01/15/2009 | WO2009007379A2 Method of lining a well or a pipe using an inflatable bladder |
| 01/15/2009 | US20090014172 Apparatus and Methods for Drilling and Lining a Wellbore |
| 01/14/2009 | CN100451294C Arranging mode of hard alloy blocks for sectional milling device and sectional milling device |
| 01/13/2009 | US7475733 Communication tool for accessing a non annular hydraulic chamber of a subsurface safety valve |
| 01/08/2009 | US20090008086 Centering Structure for Tubular Member and Method of Making Same |
| 01/06/2009 | US7472763 Wear resistant tubular connection |
| 01/06/2009 | CA2352746C Downhole apparatus and method for milling a window and at least one key-way in a well casing |
| 01/01/2009 | US20090000792 Retrievable bridge plug |
| 12/30/2008 | US7469747 Method and apparatus for preventing spillage or loss of drill fluids |
| 12/30/2008 | CA2543408C Method for providing a temporary barrier in a flow pathway |
| 12/24/2008 | WO2008104005A3 Casing window milling assembly |
| 12/24/2008 | WO2008058209A3 Offshore universal riser system |
| 12/24/2008 | CN201170073Y Rapid protecting device of casing tube local damage |
| 12/24/2008 | CN201170072Y Variable radial expansion tools for expansion sieve tube |
| 12/24/2008 | CA2809210A1 Control line running system |
| 12/24/2008 | CA2809152A1 Control line running system |