| 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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| 05/19/2011 | WO2011036471A3 A method and apparatus for communicating with a device located in a borehole |
| 05/19/2011 | WO2009137537A3 Signal operated tools for milling, drilling, and/or fishing operations |
| 05/18/2011 | CN201835780U Multipurpose tube expander |
| 05/18/2011 | CN201835779U Oil expansion pipe seat sealing system |
| 05/18/2011 | CN201835778U Efficient sleeve mill shoe |
| 05/18/2011 | CN201835771U Hydraulic tong pneumatic centralizer |
| 05/12/2011 | WO2011054687A1 Device for applying an expandable skirt having application diameter control upon advance |
| 05/12/2011 | WO2011017692A3 Cutter and cutting tool incorporating the same |
| 05/12/2011 | US20110108263 Managing Pressurized Fluid in a Downhole Tool |
| 05/12/2011 | CA2778217A1 Device for applying an expandable skirt having application diameter control upon advance |
| 05/11/2011 | CN201826792U Underground water motor windowing device in coal bed gas well |
| 05/10/2011 | US7938190 Anchored riserless mud return systems |
| 05/10/2011 | US7938178 Distributed temperature sensing in deep water subsea tree completions |
| 05/05/2011 | WO2011011574A3 Use of a spoolable compliant guide and coiled tubing to clean up a well |
| 05/05/2011 | WO2010150010A3 Apparatus and methods for forming and using subterranean salt cavern |
| 05/05/2011 | US20110100638 Apparatus and Method for Cutting Tubular Parts Subsea |
| 05/05/2011 | US20110100637 Safety Mechanism for Blowout Preventer |
| 05/04/2011 | CN201818267U Hydraulic shaper |
| 05/04/2011 | CN201818266U Multifunctional high-efficiency milling shoe |
| 05/04/2011 | CN201818265U Rotary pipe nipple for hydraulic shaping |
| 05/04/2011 | CN102041974A Bypass short-circuit structure of abandoned deep water well cutting device and cementing plug method thereof |
| 05/03/2011 | US7934562 Hybrid control system and method |
| 05/03/2011 | US7934561 Depth compensated subsea passive heave compensator |
| 05/03/2011 | US7934558 System and method for dynamically adjusting the center of gravity of a perforating apparatus |
| 05/03/2011 | US7934552 Method and apparatus for well casing repair and plugging utilizing molten metal |
| 05/03/2011 | CA2656647C Logging device with down-hole transceiver for operation in extreme temperatures |
| 05/03/2011 | CA2512700C Apparatus and methods for forming a lateral wellbore |
| 04/28/2011 | WO2010009397A4 Adapter for shaper charge casing |
| 04/27/2011 | EP2314825A1 Drilling head for reboring a stuck valve |
| 04/27/2011 | CN201810247U Milling pin tap |
| 04/27/2011 | CN201810246U Movable milling shoe |
| 04/27/2011 | CN201810245U Mill shoe with detachable pilot for tunneling in oilfield workover operation |
| 04/27/2011 | CN201810244U Movable pilot milling shoe for drilling passage in oilfield overhauling operation |
| 04/21/2011 | WO2011047303A1 Embedded multi-string well head shear |
| 04/21/2011 | WO2011008633A3 Downhole casing cutting tool |
| 04/21/2011 | US20110088911 Embedded multi-string well head shear |
| 04/20/2011 | CN201802334U Hydrodynamic sleeve windowing tool device |
| 04/19/2011 | US7926579 Apparatus for subsea intervention |
| 04/19/2011 | US7926570 Method and apparatus for preventing spillage or loss of drill fluids |
| 04/19/2011 | US7926566 Method of making a downhole cutting tool, using a single piece tubular with a radially displaceable portion |
| 04/14/2011 | WO2011042715A1 Cutting tool inserts |
| 04/14/2011 | US20110083854 Casing hanger nesting indicator |
| 04/12/2011 | US7921925 Method and apparatus for expanding and separating tubulars in a wellbore |
| 04/12/2011 | US7921919 Subsea well control system and method |
| 04/12/2011 | US7921918 Support apparatus for a well bore tool |
| 04/12/2011 | CA2540175C Activity data capture system for a well service vehicle |
| 04/12/2011 | CA2429932C Circular shaped charge |
| 04/07/2011 | WO2011041685A2 Milling tool for establishing openings in wellbore obstructions |
| 04/07/2011 | WO2011005460A3 Method for providing a temporary barrier in a flow pathway |
| 04/07/2011 | CA2776158A1 Wellbore milling tool with wear pad |
| 04/06/2011 | EP2304159A2 Signal operated tools for milling, drilling, and/or fishing operations |
| 04/06/2011 | CN201786302U Expansion construction tool |
| 04/06/2011 | CN201786301U Three-head hydraulic cutting knife |
| 04/06/2011 | CN102003169A Method for repairing accident well of coal bed methane multi-branch horizontal well |
| 04/06/2011 | CN102003155A Pear-shaped while-drilling breaker for underground falling blocks |
| 03/31/2011 | WO2011036471A2 A method and apparatus for communicating with a device located in a borehole |
| 03/31/2011 | CA2775022A1 A method and apparatus for communicating with a device located in a borehole |
| 03/30/2011 | EP2302159A2 Earth removal member with features for facilitating drill-through |
| 03/30/2011 | CN201778711U Anchoring ball type truing device for sleeve pipes |
| 03/30/2011 | CN201778671U Locking mechanism of expansion cone |
| 03/30/2011 | CN101994496A Method for treating drilling tool jamming accident in coalbed methane multi-branch horizontal well |
| 03/29/2011 | CA2536900C Control system communication and lock open tool and method for locking open a safety valve and communicating with surface |
| 03/24/2011 | WO2010135114A3 Pressure testable tubing connection |
| 03/24/2011 | WO2010132672A3 Subterranean tubular cutter with depth of cut feature |
| 03/23/2011 | CN101988376A Rotating nipple for hydraulic shaping |
| 03/23/2011 | CN101988375A Intelligent tractor hoist of deep well in oil field |
| 03/22/2011 | US7909115 Method for perforating utilizing a shaped charge in acidizing operations |
| 03/22/2011 | US7909103 Retrievable tubing hanger installed below tree |
| 03/22/2011 | US7909100 Reversible casing cutter |
| 03/17/2011 | WO2011031951A1 Tool and method for enhancing the extraction landfill gas |
| 03/17/2011 | WO2011031164A1 Well tool and method for severing and withdrawing a pipe section from a pipe string in a well |
| 03/17/2011 | WO2010147999A3 High-ratio tubular expansion |
| 03/17/2011 | WO2010035042A3 Method of testing a pipeline cut |
| 03/17/2011 | US20110061871 Manifold structure having adjustable brackets |
| 03/16/2011 | EP2295710A2 Remote actuated downhole pressure barrier and method for use of same |
| 03/16/2011 | EP2295706A2 Method and apparatus for releasing a coiled tubing internal conduit from a bottom hole assembly |
| 03/15/2011 | US7905286 Method and apparatus for sealing a hole made with a cased hole formation tester |
| 03/14/2011 | CA2677138A1 Downhole flow control apparatus, super-insulated tubulars and surface tools for producing heavy oil by steam injection methods from multi-lateral wells located in cold environments |
| 03/10/2011 | WO2011027121A1 Wellbore servicing compositions and methods of making and using same |
| 03/10/2011 | WO2010009397A3 Adapter for shaper charge casing |
| 03/10/2011 | US20110056685 Wellbore Servicing Compositions and Methods of Making and Using Same |
| 03/08/2011 | US7900706 Shoulder ring set on casing hanger trip |
| 03/08/2011 | US7900703 Method of drilling out a reaming tool |
| 03/08/2011 | CA2459559C An expandable metal liner for downhole components |
| 03/03/2011 | WO2010135245A3 Intelligent debris removal tool |
| 03/03/2011 | WO2010132807A3 Packer retrieving mill with debris removal |
| 03/03/2011 | WO2010129888A3 Dual action jet bushing |
| 03/03/2011 | US20110048741 Downhole telescoping tool with radially expandable members |
| 03/03/2011 | US20110048726 Internal tree cap and itc running tool |
| 03/03/2011 | US20110048185 Method and Systems for Using a Shim Plate for Increased Strength |
| 03/02/2011 | EP2288472A1 Abrasive cutting fluids |
| 03/02/2011 | EP2288471A1 Method of creating an underwater cutting zone, and related plugging devices and methods |
| 03/02/2011 | CN201753592U Umbrella type reducing expansion tool used for expansion pipes |
| 03/01/2011 | US7897063 Composition for denaturing and breaking down friction-reducing polymer and for destroying other gas and oil well contaminants |
| 03/01/2011 | US7896077 Providing dynamic transient pressure conditions to improve perforation characteristics |
| 03/01/2011 | CA2514476C Method of forming a window in a casing |
| 03/01/2011 | CA2504523C Composite tool insert |
| 02/24/2011 | WO2010135490A3 Auxiliary conduit cutting apparatus |
| 02/23/2011 | CN101979818A Hydraulic reshaper |
| 02/22/2011 | US7891429 Riserless modular subsea well intervention, method and apparatus |