E21B 25 - Apparatus for obtaining or removing undisturbed cores, e.g. core barrels, core extractors

Patents for E21B 25 - Apparatus for obtaining or removing undisturbed cores, e.g. core barrels, core extractors (2,102)
10/2011
10/20/2011	WO2011130148A2 Coring apparatus and methods
10/20/2011	WO2011129760A1 Device and method for handling drill string components and drill rig
10/20/2011	US20110253452 Coring apparatus and methods
10/20/2011	CA2796049A1 Coring apparatus and methods
10/20/2011	CA2792972A1 Device and method for handling drill string components and drill rig
10/18/2011	CA2669480C Downhole formation testing tool
10/13/2011	WO2011127374A1 Apparatus and methods for detecting gases during coring operations
10/13/2011	WO2011044314A3 Driven latch mechanism
10/13/2011	US20110247879 Apparatus and methods for detecting gases during coring operations
10/12/2011	CN202007640U Fractured formation corer driven by spiral drilling rig
10/05/2011	CN202000938U Blowout preventor of cable type water conveying device
09/2011
09/29/2011	WO2011084589A3 Core drilling tools with retractably lockable driven latch mechanisms
09/29/2011	WO2011084587A3 Core drilling tools with external fluid pathways
09/21/2011	CN201982045U 一种绳索取心钻具 One kind of rope coring drill
09/21/2011	CN201982044U 一种孕镶金刚石绳索取芯地质钻头 One kind of rope impregnated diamond drill core geology
09/21/2011	CN201982043U 旋挖钻进抓取器 Rotary Drilling grabber
09/14/2011	CN201972637U 一种取心工具安全接头 One kind of safety joint coring tool
09/14/2011	CN201972626U 取心工具内筒扶正器 Inner tube coring tool centralizer
09/14/2011	CN1721654B Downhole formation testing tool
09/14/2011	CN102182414A Deep-sea sediment core pressure-maintaining device matched with submarine drilling rig and method for using deep-sea sediment core pressure-maintaining device
09/14/2011	CN102182413A Device for locking and unlocking sampling tube in hollow drilling rod special for drilling soft rock stratum
09/14/2011	CN102182396A Core drilling machine power head capable of keeping off opening orifice
09/07/2011	CN201963235U 一种金刚石取心钻头 A line of diamond coring bits
08/2011
08/31/2011	CN201953332U 伸缩叠合型柔性袋管取芯内管 Superposed inner telescopic tube coring tube pouch
08/25/2011	WO2011102785A1 Method and arrangement for sampling of bedrock
08/25/2011	WO2011003990A3 Core barrel and related drilling apparatus and method
08/25/2011	DE102010004609A1 Bit less drilling system for drilling deep holes in e.g. tunnel for mounting power cable, has casing designed as lattice and made of plastic with low temperature, metal and ceramics, and device manipulating rock and borehole wall
08/18/2011	US20110198131 Core barrel assemblies with braking devices
08/18/2011	US20110198125 Percussive driving apparatus for environmental sampling or test device
08/18/2011	US20110198124 Substantially simultaneous core containment, core retrieval and borehole abatement
08/17/2011	CN102155178A Large-diameter coalbed methane core drill bit
08/17/2011	CN102155177A Wire-line core drilling hydraulic impactor
08/17/2011	CN102155176A Waterproof rock soil core drilling tool
08/17/2011	CN102155175A Pressure-releasing device for closed coring tool
08/17/2011	CN101308062B Self sealed self decompressed coal seam sampling method and apparatus
08/16/2011	CA2561075C Articulated drillstring entry apparatus and method
08/10/2011	EP2354438A1 A core sampling apparatus
08/10/2011	CN201924855U 深孔煤样快速采集装置 Deep coal sample collection device quickly
08/10/2011	CN201924854U 新型密封头组 New sealing head group
08/10/2011	CN201924830U 一种双管外导内钻定向连续取芯造斜机具 Directional drilling within a two-tube outer conductor continuous coring equipment whipstocking
07/2011
07/28/2011	WO2011090480A1 Method and apparatus for resistivity measurements
07/28/2011	WO2011056809A3 Core lifter
07/27/2011	CN201908597U Sealing coring tool of rope
07/27/2011	CN102134980A Device for sealing plate valve through pretightening
07/27/2011	CN102134976A Tunnel drilling hydraulic power reverse-circulation dual-walled drilling tool
07/21/2011	WO2011044427A3 Automated sidewall coring
07/21/2011	US20110174546 Core drill bit
07/20/2011	CN102128013A Diamond impregnated wire line coring geological bit and manufacturing method thereof
07/14/2011	WO2011084589A2 Core drilling tools with retractably lockable driven latch mechanisms
07/14/2011	WO2011084587A2 Core drilling tools with external fluid pathways
07/14/2011	WO2011082870A1 Determining methane content of a bottom sample
07/14/2011	WO2011082563A1 Storage and transportation box for core
07/14/2011	CA2784532A1 Core drilling tools with retractably lockable driven latch mechanisms
07/14/2011	CA2784531A1 Core drilling tools with external fluid pathways
07/05/2011	CA2673317C Locking device for a drilling device
06/2011
06/28/2011	US7967085 Braking devices for use in drilling operations
06/23/2011	WO2011072342A1 Device for sampling cores from a seabed
06/22/2011	CN102102515A Coring selector with gear indication function for well wall
06/22/2011	CN102102498A Rope coring system special for soft rock stratum drilling and using method thereof
06/16/2011	WO2010050840A8 An integrated coring system
06/15/2011	CN201865610U Light core drilling rig
06/01/2011	CN201851054U Reverse circulation percussion hammer
06/01/2011	CN201851053U Rotary-cut drilling tool for coring from sandy soil
06/01/2011	CN102080503A Continuous directional coring and deflecting machine tool with dual tubes for outer guiding and inner drilling and deflecting method thereof
05/2011
05/31/2011	US7953586 Method and system for designing bottom hole assembly configuration
05/18/2011	CN201835777U Hole bottom freezing rope core drill
05/18/2011	CN201835776U Core production device used for drilling
05/17/2011	CA2602513C Obtaining and evaluating downhole samples with a coring tool
05/12/2011	WO2011056809A2 Core lifter
05/12/2011	WO2011056077A1 Lockable core barrel head for drilling system and survey instrument assembly provided with a connection link for arrangement in a drilling system
05/12/2011	CA2779932A1 Lockable core barrel head for drilling system and survey instrument assembly provided with a connection link for arrangement in a drilling system
05/12/2011	CA2779277A1 Core lifter
05/11/2011	CN201826791U Anti-fragmentation core sampling device
05/11/2011	CN201826790U Core sampler
05/11/2011	CN102057130A Method and device for core drilling
05/05/2011	US20110100718 Core lifter
05/04/2011	CN201818264U Coring tool-core claw
05/04/2011	CN201818263U Horizontal well coring tool
05/04/2011	CN201818262U Semi-closed pipe thin wall surface coring apparatus
05/04/2011	CN201818261U Drilling sealed coring lower piston
05/04/2011	CN201818260U Coring tool assembly lifting device
05/03/2011	US7934569 Core stabilization
04/2011
04/28/2011	WO2011016642A3 Oil-pressure type fixed piston sampler
04/28/2011	US20110094801 Coring apparatus and methods to use the same
04/27/2011	EP2313604A1 Method and device for core drilling
04/27/2011	CN201810242U Concrete core sample picker
04/21/2011	US20110088948 Core sample orientation
04/20/2011	CN102022076A Drilling method of rotary drilling machine in hard rock and special-purpose sediment pipe core cone bit
04/14/2011	WO2011044427A2 Automated sidewall coring
04/14/2011	WO2011044314A2 Driven latch mechanism
04/14/2011	US20110083905 Coring apparatus with sensors
04/14/2011	CA2776923A1 Driven latch mechanism
04/13/2011	CN101205800B Heavy-caliber base rock boring coring device
04/06/2011	EP2304174A1 Downhole measurement of formation characteristics while drilling
04/06/2011	CN201786300U Open-close type static pressure sampler for bedding fault zone soft rock in cavern
03/2011
03/30/2011	CN201779318U Hydraulic balancing seal valve
03/30/2011	CN201778709U Pressurization relief mechanism of pressurized coring tool
03/30/2011	CN201778708U Embedded rock core grabber of coring tool
03/30/2011	CN101999031A Jointed spearhead assembly
03/30/2011	CN101999027A Sonic drill bit for core sampling

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