| 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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| 12/01/2011 | US20110290501 Method and system for containing uncontrolled flow of reservoir fluids into the environment |
| 12/01/2011 | US20110290487 Cutting tool |
| 12/01/2011 | US20110290486 Well Treatment Device, Method, and System |
| 12/01/2011 | CA2801800A1 Tubular severing system and method of using same |
| 12/01/2011 | CA2801036A1 System and method for severing a tubular |
| 12/01/2011 | CA2798839A1 Method for forming slots in a wellbore casing |
| 11/30/2011 | EP2390459A2 Well assembly coupling |
| 11/30/2011 | CN202055785U 接箍套铣鞋 Couplings Washover shoes |
| 11/30/2011 | CN101305158B 齐平安装的管补片 Tube patch flush mounted |
| 11/29/2011 | US8066070 Blowout preventers and methods of use |
| 11/24/2011 | WO2011146219A2 Cutting dart and method of using the cutting dart |
| 11/24/2011 | US20110284243 Isolation tool actuated by gas generation |
| 11/24/2011 | US20110284242 Isolation tool |
| 11/24/2011 | US20110284224 Cutting dart and method of using the cutting dart |
| 11/24/2011 | US20110283872 Downhole severing tool |
| 11/23/2011 | CN202047772U Expansion and salvage integrated expansion pipe assembly |
| 11/22/2011 | US8061431 Method of operating a pressure cycle operated perforating firing head and generating electricity in a subterranean well |
| 11/22/2011 | US8061426 System and method for lateral wellbore entry, debris removal, and wellbore cleaning |
| 11/22/2011 | US8061425 System and method for dynamically adjusting the center of gravity of a perforating apparatus |
| 11/22/2011 | US8061423 Expandable wellbore assembly |
| 11/17/2011 | WO2011143276A2 Undersea leak remediation device and method |
| 11/17/2011 | US20110278020 Shearing tool and methods of use |
| 11/17/2011 | US20110278007 Tool and method for providing access to a wellhead annulus |
| 11/17/2011 | US20110277998 Apparatus and Method for Setting a Tool in a Borehole |
| 11/16/2011 | CN1946919B Reducing viscosity of oil for production from a hydrocarbon containing formation |
| 11/16/2011 | CN101575952B Gas power bushing patch device with large drift diameter |
| 11/15/2011 | US8056638 Consumable downhole tools |
| 11/15/2011 | US8056633 Apparatus and method for removing subsea structures |
| 11/10/2011 | WO2004092527A3 Apparatus for radially expanding and plastically deforming a tubular member |
| 11/09/2011 | CN202031515U High-efficiency milling cone with steering tool |
| 11/09/2011 | CN202031514U Multifunctional and high-pressure milling cone |
| 11/07/2011 | CA2703339A1 Drilling plugs and the like in wells |
| 11/01/2011 | US8047295 Lightweight device for remote subsea wireline intervention |
| 11/01/2011 | US8047291 Tool and method for abrasive formation of openings in downhole structures |
| 11/01/2011 | US8047277 Method and apparatus for removing casing |
| 11/01/2011 | CA2493267C Fluid system component with sacrificial element |
| 10/27/2011 | US20110259589 Maintenance Device and Method for Producing a Maintenance Access |
| 10/27/2011 | US20110259587 Apparatus and method for sealing portions of a wellbore |
| 10/26/2011 | EP2379839A1 Systems and methods for using a passageway through a subterranean strata |
| 10/25/2011 | US8042613 Drilling head for reboring a stuck valve |
| 10/25/2011 | CA2663723C Monobore construction with dual expanders |
| 10/20/2011 | WO2011082306A3 Side-tracking system and related methods |
| 10/20/2011 | US20110253379 Method for modifying an existing subsea arranged oil production well, and a thus modified oil production well |
| 10/19/2011 | CN202012319U Expansion pipe patching tool integrating functions of expansion and salvage |
| 10/19/2011 | CN202012318U Mill shoes |
| 10/19/2011 | CN102220842A Radial high-pressure water jetting composite well with ultrashort radius as well as well completion tool and technology |
| 10/18/2011 | CA2684428C One trip milling system |
| 10/13/2011 | WO2011127411A2 Fluid displacement methods and apparatus for hydrocarbons in subsea production tubing |
| 10/13/2011 | WO2011101481A3 Tubular assembly |
| 10/13/2011 | US20110247815 Method and apparatus for single run cutting of well casing and forming subsurface lateral passages from a well |
| 10/06/2011 | WO2011094115A3 An openable port and method |
| 10/06/2011 | WO2011082146A3 Auxiliary conduit cutting apparatus |
| 10/06/2011 | US20110240305 Floating well intervention arrangement comprising a heave compensated work deck and method for well intervention |
| 10/06/2011 | US20110240294 Pipe perforating apparatus and method |
| 10/05/2011 | EP2372076A2 Well assembly with a millable member in an opening |
| 10/05/2011 | EP2372075A2 Well assembly with recesses faciliating branch wellbore creation |
| 10/05/2011 | CN202000941U Underground sleeving wall punching device for oil well |
| 10/05/2011 | CN202000940U Perforated welding casing milling shoe |
| 10/05/2011 | CN1910337B Control system communication and lock open tool and method for locking open a safety valve and communicating with surface |
| 09/30/2011 | CA2735753A1 Fluid system component with sacrificial element |
| 09/30/2011 | CA2734196A1 Well assembly with recesses facilitating branch wellbore creation |
| 09/29/2011 | WO2011119874A1 Subterranean and marine-submersible electrical transmission system for oil and gas wells |
| 09/29/2011 | CA2794452A1 Subterranean and marine-submersible electrical transmission system for oil and gas wells |
| 09/28/2011 | CN201991473U 一种修井用的套管悬挂装置 One kind of workover Sleeves suspension |
| 09/27/2011 | CA2450751C Method for preparing wellbore casing for installation |
| 09/22/2011 | WO2011115941A1 Section mill and method for abandoning a wellbore |
| 09/22/2011 | US20110226491 Downhole tool of high pressure operating cycle capability |
| 09/22/2011 | US20110226477 Tubular severing system and method of using same |
| 09/22/2011 | US20110226476 Tubular severing system and method of using same |
| 09/22/2011 | US20110226475 System and method for severing a tubular |
| 09/22/2011 | US20110226474 Method and apparatus for cutting tubular goods |
| 09/22/2011 | CA2793231A1 Section mill and method for abandoning a wellbore |
| 09/21/2011 | EP2366057A1 Downhole equipment removal system |
| 09/21/2011 | EP2366056A1 Wellbore machining device |
| 09/21/2011 | CN201982046U 斜盘式柱塞泵增压的膨胀管补贴工具 Swashplate piston pump pressurized expansion pipe subsidies tool |
| 09/20/2011 | US8020622 Annealing of materials downhole |
| 09/20/2011 | US8020620 Methods of producing flow-through passages in casing, and methods of using such casing |
| 09/20/2011 | US8020619 Severing of downhole tubing with associated cable |
| 09/20/2011 | US8020614 Apparatus for the decomposition of hydrogen peroxide |
| 09/20/2011 | CA2475602C System for forming a window and drilling a sidetrack wellbore |
| 09/15/2011 | US20110220357 Section Mill and Method for Abandoning a Wellbore |
| 09/15/2011 | CA2734023A1 Methods and apparatus relating to expansion tools for tubular strings |
| 09/14/2011 | CN201972638U 一种倒管式高效磨鞋 An inverted tube mill efficiency shoes |
| 09/14/2011 | CN102182417A Salvageable and expandable expansion tube patch tool |
| 09/14/2011 | CN102182416A Multifunctional high-pressure milling cone |
| 09/14/2011 | CN102182415A Efficient milling cone with guide tool |
| 09/14/2011 | CN102182403A Drilling type well completion technology for fishbone branch borehole |
| 09/13/2011 | CA2641965C Particulate matter exclusion device |
| 09/09/2011 | WO2011108939A1 Device for remote-controlled, submarine machining unit |
| 09/07/2011 | EP2363229A1 Method for cutting a conductor pipe having inner and outer metal pipes with grouting disposed between the inner and outer pipes |
| 09/07/2011 | EP1957751B1 Downhole hydraulic pipe cutter |
| 09/07/2011 | CN201963236U 一种磨铣冲击器 One kind of milling impactor |
| 09/06/2011 | US8011446 Method and apparatus for a monodiameter wellbore, monodiameter casing, monobore, and/or monowell |
| 09/06/2011 | US8011436 Through riser installation of tree block |
| 09/01/2011 | US20110209875 Installation for the extraction of fluid from an expanse of water, and associated method |
| 09/01/2011 | US20110209872 Method and apparatus for programmable robotic rotary mill cutting of multiple nested tubulars |
| 09/01/2011 | US20110209540 Method of testing a pipeline cut |
| 08/31/2011 | EP2362062A1 An annular barrier |
| 08/31/2011 | CN102168530A Pressure drilling device for a drill stem and a using method thereof |
| 08/25/2011 | WO2011101481A2 Tubular assembly |