| Patents for E21B 25 - Apparatus for obtaining or removing undisturbed cores, e.g. core barrels, core extractors (2,102) |
|---|
| 05/12/2010 | CN201460781U Rope type coal bed coring tool |
| 05/12/2010 | CN201460780U Seabed deep hole core drilling rig |
| 05/11/2010 | CA2499725C One-step directional coring or drilling system |
| 05/06/2010 | WO2010050840A1 An integrated coring system |
| 05/06/2010 | CA2741682A1 An integrated coring system |
| 05/05/2010 | CN201448078U Powdered coal coring device |
| 04/29/2010 | WO2010046757A1 Self-propelled drilling machine for core sampling |
| 04/29/2010 | WO2010045691A1 Flow diverter assembly |
| 04/29/2010 | US20100101863 Sonic drill rod with external surface features |
| 04/21/2010 | CN201439692U Closed core taking and grabbing device |
| 04/15/2010 | DE102008047905A1 System to handle samples taken under pressure has a sealed transfer mechanism into a vessel to maintain the pressure and temperature conditions of the sampling point |
| 04/08/2010 | US20100084193 Air hammer coring apparatus and method |
| 04/08/2010 | DE102008049795A1 Pressure sealed closure for inner core tube region for supporting sampling of sediments in deep sea, has floating piston positioned with sealing function and drilling-progress-dependent automatic release function at lower end of liner |
| 03/31/2010 | CN201433731Y Coring tool and rock core transporting assembly |
| 03/24/2010 | CN101680281A Drilling system with a barrel drilling head driven by a downhole tractor |
| 03/17/2010 | CN101672170A Novel electric directional coring apparatus |
| 03/11/2010 | WO2009140400A3 Sonic drill bit for core sampling |
| 03/10/2010 | CN101666217A Core-filling drilling tool of rope side wall |
| 03/04/2010 | WO2009140597A3 Jointed spearhead assembly |
| 02/24/2010 | EP2156010A2 Remotely operated water bottom based drilling system using cable for auxiliary operations |
| 02/23/2010 | US7668583 Method and apparatus for control and location of an instrument or appliance |
| 02/23/2010 | US7665542 Core barrel capacity gauge and method |
| 02/17/2010 | CN101649727A Core orientator |
| 02/03/2010 | CN201396136Y Core box dust cap |
| 02/03/2010 | CN201396092Y Core orienting device |
| 02/03/2010 | CN201396091Y Rotary drill pipe storage mechanism for seabed drilling rig capable of automatically handling drill pipes |
| 01/21/2010 | US20100012383 High productivity core drilling system |
| 01/13/2010 | CN201381816Y Rope core drill bit |
| 01/13/2010 | CN101624903A Core sampler with controlled cooling water |
| 01/06/2010 | EP2140100A2 Drilling system with a barrel drilling head driven by a downhole tractor |
| 12/30/2009 | WO2009157837A1 Method and device for core drilling |
| 12/30/2009 | CN201372754Y Jet-type reverse rope coring drilling tool |
| 12/30/2009 | CN201372753Y Double-thread hollow core drill bit |
| 12/30/2009 | CN201372752Y Fiber reinforced plastics (FRP) suspension device for coring inner barrels |
| 12/30/2009 | CN201371477Y Conformal coring glass reinforced plastic inner barrel cutting device |
| 12/30/2009 | CA2725758A1 Method and device for core drilling |
| 12/24/2009 | US20090314545 Core sample orientation |
| 12/23/2009 | EP2134921A1 A core orientation tool |
| 12/17/2009 | US20090308657 Magnetic ranging and controlled earth borehole drilling |
| 11/26/2009 | WO2009142873A1 Downhole measurement of formation characteristics while drilling |
| 11/25/2009 | CN201351468Y Rock core prying device |
| 11/19/2009 | WO2009140597A2 Jointed spearhead assembly |
| 11/19/2009 | US20090283329 Sonic latch mechanism |
| 11/19/2009 | US20090283327 Jointed spearhead assembly |
| 11/19/2009 | CA2848671A1 Sonic drill bit for core sampling |
| 11/19/2009 | CA2775016A1 Sonic drill bit for core sampling |
| 11/19/2009 | CA2720810A1 Sonic drill bit for core sampling |
| 11/05/2009 | WO2009102578A3 Method and system of monitoring rotational time of rotatable equipment |
| 10/27/2009 | CA2578943C Apparatus and methods for sponge coring |
| 10/27/2009 | CA2528393C Marking system and method |
| 10/22/2009 | US20090260883 Continuous measurement of heterogeneity of geomaterials |
| 10/15/2009 | US20090255679 Valve, core sampling apparatus and method |
| 10/14/2009 | CN201326396Y Concealed core support device for crushed stratum coring |
| 10/14/2009 | CN201326395Y Quick latch jack for wire line coring |
| 10/14/2009 | CN101555774A Submarine deep-hole coring drilling rig |
| 10/13/2009 | US7600580 Sealed core sample barrel |
| 10/13/2009 | CA2509604C Downhole formation testing tool |
| 10/07/2009 | EP2107210A2 Valve, core sampling apparatus and method |
| 09/30/2009 | CN201318139Y Hydraulic drill core cutting device |
| 09/24/2009 | WO2009117347A1 Detachable latch head for core drilling |
| 09/22/2009 | CA2370918C Up-hole pump-in core barrel apparatus |
| 09/17/2009 | US20090229885 Apparatus, system, and method for catching a core |
| 09/17/2009 | US20090229884 Detachable latch head for core drilling |
| 09/16/2009 | CN101532373A Multi-point oriented coring system and method for drill core |
| 09/01/2009 | US7584055 Core sample orientation |
| 08/26/2009 | CN101514614A Dry ice sublimation hole bottom refrigerating and pressure keeping sampler and sampling method |
| 08/26/2009 | CN100532781C Gas drilling centering technique |
| 08/20/2009 | WO2009102578A2 Method and system of monitoring rotational time of rotatable equipment |
| 08/20/2009 | CA2712580A1 Method and system of monitoring rotational time of rotatable equipment |
| 08/19/2009 | CN201292793Y Reverse circulation impactor |
| 08/19/2009 | CN201292785Y Center fetching inner barrel righting fittings |
| 08/05/2009 | CN101501297A Modular geosteering tool assembly |
| 08/05/2009 | CN101498200A Combined movement mechanism for coring instrument |
| 07/29/2009 | EP1285250B1 Device for taking samples from a material of granular or powdery composition |
| 07/29/2009 | CN201280906Y Circlip |
| 07/28/2009 | CA2388485C Device for taking samples from a material of granular or powdery composition |
| 07/22/2009 | CN201276997Y Drill core clamping device |
| 07/09/2009 | WO2009083805A2 Subsurface formation core acquisition system usinghigh speed data and control telemetry |
| 07/09/2009 | US20090173542 Vibratory unit for drilling systems |
| 07/08/2009 | CN201269060Y Double-rock core gripper clamping mechanism |
| 07/07/2009 | WO2007131356A1 Information characterization system and methods |
| 07/02/2009 | WO2009042781A3 Apparatus and methods for continuous tomography of cores |
| 07/01/2009 | CN100507204C Shallow-hole thermal-insulating and pressure-retaining driller in deep water with natural gas hydrate for taking out ocre |
| 06/25/2009 | WO2009042785A3 Sensors for estimating properties of a core |
| 06/24/2009 | EP2072749A2 Monitoring Apparatus for Core Barrel Operations |
| 06/24/2009 | CN201262055Y Complete coal core taking apparatus for down-hole extruded coal seam |
| 06/17/2009 | EP2069605A1 Core barrel capacity gauge |
| 06/17/2009 | CN101460698A Antenna coupling component measurement tool having rotating antenna configuration |
| 06/10/2009 | EP2066866A1 Antenna coupling component measurement tool having rotating antenna configuration |
| 06/04/2009 | WO2009042774A3 Apparatus and methods for continuous coring |
| 06/04/2009 | US20090139768 Apparatus and Methods for Continuous Tomography of Cores |
| 05/28/2009 | US20090133932 Sidewall Coring Tool and Method for Marking a Sidewall Core |
| 05/27/2009 | CN201246124Y Boring tool with cooling lubrication and overload protection structure |
| 05/20/2009 | EP2059460A1 Drill core trays and accessories for use therewith |
| 05/20/2009 | CN101435316A Broken formation coring tool |
| 05/12/2009 | CA2359236C Up-hole overshot and safety drilling apparatus |
| 05/07/2009 | US20090114445 Method of Training Neural Network Models and Using Same for Drilling Wellbores |
| 05/06/2009 | EP2055891A2 Method and apparatus for determining flow characteristics of a geological formation |
| 05/06/2009 | CN101424170A Coring tool, core convey assembly and core convey method |
| 05/05/2009 | US7528946 System for detecting deflection of a boring tool |