| 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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| 08/25/2011 | CA2790647A1 Tubular assembly |
| 08/24/2011 | EP2358974A1 Systems and methods for operating a plurality of wells through a single bore |
| 08/24/2011 | EP2358972A1 Method and apparatus for programmable robotic rotary mill cutting of multiple nested tubulars |
| 08/24/2011 | CN201943659U Protective shelter for well mouth cutting operation used in oil well fire extinguishing |
| 08/24/2011 | CN201943622U 螺杆泵增压的膨胀管补贴工具 The expansion pipe screw supercharger subsidies Tools |
| 08/24/2011 | CN201943621U 一种用于井下切割钢丝胶管的高压水射流切割平台 A downhole cutting wire hose for high pressure water jet cutting platform |
| 08/24/2011 | CN201943620U 一种多层套管割刀 A multilayer casing cutter |
| 08/24/2011 | CN201943596U 一种膨胀管 An expansion tube |
| 08/24/2011 | CN102162343A Milling shoes for casing window sidetracking |
| 08/23/2011 | US8002035 System and method for dynamically adjusting the center of gravity of a perforating apparatus |
| 08/18/2011 | US20110198082 Downhole tool assembly with debris relief, and method for using same |
| 08/17/2011 | EP2132403B1 Drilling head for reboring a stuck valve |
| 08/17/2011 | CN201934044U 一种磨铣钻压稳定装置 One kind of milling WOB stabilizing device |
| 08/17/2011 | CN101657603B Drilling head for reborinq a stuck valve |
| 08/16/2011 | US7997347 Mobile coiled tubing straightening tool |
| 08/16/2011 | US7997345 Universal marine diverter converter |
| 08/16/2011 | US7997332 Method and apparatus to remove a downhole drill collar from a well bore |
| 08/11/2011 | US20110192611 Riser Joint Coupling |
| 08/11/2011 | US20110192589 Optimized machining process for cutting tubulars downhole |
| 08/10/2011 | CN201924856U 可打捞膨胀管发射室底堵装置 Can salvage the inflatable tube firing chamber bottom blocking devices |
| 08/10/2011 | CN102146779A Underground locating and angle-fixing drilling and windowing tool for horizontal well |
| 08/09/2011 | US7992645 Cut release sub and method |
| 08/09/2011 | CA2504518C Tool insert |
| 08/04/2011 | WO2011094115A2 An openable port and method |
| 08/04/2011 | WO2011093720A1 Method and device for loosening a cast-in casing |
| 08/04/2011 | US20110186301 Subsea structure installation or removal |
| 08/04/2011 | CA2787705A1 An openable port and method |
| 08/03/2011 | CN201915876U 水平井井下定位定角钻孔开窗工具 Fixed angle positioning of horizontal wells drilled downhole tool windows |
| 08/02/2011 | US7987906 Well bore tool |
| 08/02/2011 | CA2516074C Expandable whipstock anchor assembly |
| 07/28/2011 | WO2010150010A4 Apparatus and methods for forming and using subterranean salt cavern |
| 07/21/2011 | US20110174477 Full Gauge Milling Bottom Hole Assembly with Optimal Contact Force and Build Rate Capability |
| 07/20/2011 | CN201902186U Roller-type milling tool |
| 07/19/2011 | US7980309 Method for selective activation of downhole devices in a tool string |
| 07/19/2011 | US7980308 Perforating gun assembly and method for controlling wellbore fluid dynamics |
| 07/19/2011 | US7980300 Drillable bridge plug |
| 07/19/2011 | CA2565864C Method and apparatus for completing lateral channels from an existing oil or gas well |
| 07/13/2011 | CN102121359A Method for repairing old oil pipes |
| 07/12/2011 | US7975769 Field development with centralised power generation unit |
| 07/12/2011 | US7975768 Riser joint coupling |
| 07/12/2011 | CA2689962C Expanding multiple tubular portions |
| 07/12/2011 | CA2646468C Overlapping tubulars for use in geologic structures |
| 07/12/2011 | CA2485664C Downhole tool deployment safety system and methods |
| 07/07/2011 | WO2011082146A2 Auxiliary conduit cutting apparatus |
| 07/07/2011 | WO2011008544A3 Wellbore laser operations |
| 07/07/2011 | WO2011004183A3 Apparatus and methods for sealing subterranean borehole and performing other cable downhole rotary operations |
| 07/07/2011 | CA2786003A1 Side-tracking system and related methods |
| 07/06/2011 | CN201891402U Movable grind shoe |
| 07/06/2011 | CN201891401U Composite probe milling taper |
| 07/06/2011 | CN1807830B Hydraulic diameter-variable casing expansion method and apparatus therefor |
| 07/05/2011 | US7971645 Four mill bottom hole assembly |
| 07/05/2011 | US7971637 Dual mini well surface control system |
| 07/05/2011 | CA2669721C Method and apparatus for performing laser operations downhole |
| 06/30/2011 | WO2011041685A3 Milling tool for establishing openings in wellbore obstructions |
| 06/30/2011 | US20110155387 Apparatus for improving well safety and recovery and installation process thereof |
| 06/30/2011 | US20110155375 System and method of dynamic underbalanced perforating using an isolation fluid |
| 06/29/2011 | CN201883974U Variable-diameter expansion cone for equal-diameter well drilling and completion |
| 06/29/2011 | CN201883973U Downhole double-stage reciprocating booster |
| 06/28/2011 | US7967070 Diverless connector for bend restrictors and/or bend stiffeners |
| 06/28/2011 | CA2501400C Device for installation of a profile liner in a well |
| 06/23/2011 | WO2011074981A1 Method and device for closing a well |
| 06/23/2011 | US20110147008 Method and apparatus to position and protect control lines being coupled to a pipe string on a rig |
| 06/22/2011 | CN201874503U Milling head for oil well |
| 06/22/2011 | CN201874502U Heterogeneous diamond tooth-arranging milling shoe with tungsten-carbide matrix structure |
| 06/21/2011 | US7963342 Downhole isolation valve and methods for use |
| 06/21/2011 | US7963340 Method for disintegrating a barrier in a well isolation device |
| 06/21/2011 | US7963336 Preloaded riser coupling system |
| 06/21/2011 | US7963319 Downhole cable gripping/shearing device |
| 06/16/2011 | US20110139505 Shaped charge |
| 06/15/2011 | CN102094589A Device for repairing deformed sleeves by explosion |
| 06/14/2011 | US7958940 Method and apparatus to remove composite frac plugs from casings in oil and gas wells |
| 06/14/2011 | US7958938 System and vessel for supporting offshore fields |
| 06/10/2011 | CA2688186A1 Mill-through tailpipe liner exit and method of use thereof |
| 06/09/2011 | WO2011019926A3 Optimized machining process for cutting tubulars downhole |
| 06/09/2011 | US20110132620 Dissolvable Tool and Method |
| 06/09/2011 | US20110132619 Dissolvable Tool and Method |
| 06/09/2011 | US20110132608 Device for the Focus and Control of Dynamic Underbalance or Dynamic Overbalance in a Wellbore |
| 06/08/2011 | CN201857915U Impactor for downhole accident disposal in wireline operation |
| 06/08/2011 | CN1806088B Submarine workover assembly and manufacture method thereof |
| 06/08/2011 | CN101086198B Method of creating a borehole in an earth formation |
| 06/07/2011 | US7954553 Use of low impact expansion to reduce flow friction |
| 06/07/2011 | CA2662440C Method and apparatus for lateral drilling through a subterranean formation |
| 06/02/2011 | US20110127035 Method of abandoning a petroleum well |
| 06/01/2011 | CN201851057U Casing-broken well repair tubular column |
| 06/01/2011 | CN201851056U Sleeve pipe window opening orientation device of radial horizontal well |
| 06/01/2011 | CN102080512A Multiposition one-way bypass connection structure for deep-water abandoned well cutting device |
| 06/01/2011 | CN102080511A Deepwater abandoned well cutting device having cementing plug and operation method of cementing plug thereof |
| 05/31/2011 | US7950463 Method and arrangement for removing soils, particles or fluids from the seabed or from great sea depths |
| 05/31/2011 | US7950456 Casing deformation and control for inclusion propagation |
| 05/31/2011 | US7950452 Anti-fouling system for offshore drilling structures |
| 05/31/2011 | US7950450 Apparatus and methods of cleaning and refinishing tubulars |
| 05/31/2011 | CA2462234C Contractable and expandable tubular wellbore system |
| 05/25/2011 | CN201843555U Hydraulic expansion cone for sleeve repair |
| 05/25/2011 | CN201843554U Well wall dropping block crushing device |
| 05/25/2011 | CN201843553U Pyriform device for crushing underground fallen blocks while drilling |
| 05/25/2011 | CN201843521U Side tracking bent pipe guider |
| 05/25/2011 | CN102071894A Oil pipe hot drilling equipment and hot drilling technology thereof |
| 05/24/2011 | US7946344 Method and assembly for producing oil and/or gas through a well traversing stacked oil and/or gas bearing earth layers |
| 05/19/2011 | WO2011059919A1 Subsea separation systems |
| 05/19/2011 | WO2011059338A1 Method and device for closing a well in the ground |