| Patents for E21B 12 - Accessories for drilling tools (993) |
|---|
| 04/22/2009 | CN201225090Y Engineering water drill |
| 04/16/2009 | US20090095474 System and Method for Fracturing While Drilling |
| 03/26/2009 | US20090078463 Swell set wet connect and method |
| 03/04/2009 | CN201202409Y Drill rod water injector |
| 02/26/2009 | WO2009025603A1 A reamer |
| 02/26/2009 | WO2007149939A3 Cuttings removal wipers for cutter assemblies and method |
| 02/05/2009 | WO2009018559A2 Downhole applications of composites having aligned nanotubes for heat transport |
| 02/05/2009 | CA2693839A1 Downhole applications of composites having aligned nanotubes for heat transport |
| 02/03/2009 | US7484571 Downhole abrading tools having excessive wear indicator |
| 01/14/2009 | CN201180499Y Apparatus for clearing soil adhered on auger stem |
| 01/06/2009 | US7472745 Well cleanup tool with real time condition feedback to the surface |
| 01/01/2009 | US20090006058 Iterative Drilling Simulation Process For Enhanced Economic Decision Making |
| 12/18/2008 | US20080308321 Interchangeable bearing blocks for drill bits, and drill bits including same |
| 12/10/2008 | CN201162495Y Square core sleeve of well drilling roller |
| 10/09/2008 | US20080245573 Thread Retention |
| 10/08/2008 | EP1978204A1 Earth drill |
| 10/08/2008 | CN201129142Y Step combined drill for indoor pipeline engineering |
| 09/25/2008 | US20080230271 Downhole abrading tools having fusible material and uses therefor |
| 09/18/2008 | WO2008016868A9 Downhole abrading tool having a taggant injection assembly for indicating excessive wear |
| 09/16/2008 | US7424910 Downhole abrading tools having a hydrostatic chamber and uses therefor |
| 08/21/2008 | WO2008079978A3 System and method for cleaning drill cuttings with degassed water |
| 08/20/2008 | CN201103346Y Safety chain for drilling glue pipe of oil field |
| 08/20/2008 | CN201101990Y HAS high pressure gas-mist quick injector |
| 08/07/2008 | WO2008036709A3 Apparatus and method for packaging rotary drill bits |
| 07/31/2008 | DE202008006671U1 Verlängerung für Pfahl- und Erdbohrgeräte bzw. Erdbohrer Extension for pole and earth augers and auger |
| 07/29/2008 | US7404457 Downhole abrading tools having fusible material and methods of detecting tool wear |
| 07/16/2008 | CN201087697Y Drilling rod mud scraping device |
| 07/16/2008 | CN101223335A Method and apparatus for collecting drill bit performance data |
| 07/03/2008 | WO2008079978A2 System and method for cleaning drill cuttings with degassed water |
| 07/03/2008 | DE102007035356A1 Verfahren zum Bestimmen des elektrischen Zustands eines verkabelten Gestängerohrs und Fehlerlokalisierungsvorrichtung A method of determining the electrical state of a wired drill pipe and fault locating device |
| 06/29/2008 | CA2594606A1 Method and apparatus for locating faults in wired drill pipe |
| 06/14/2008 | CA2613020A1 System and method for controlling actuation of a well component |
| 06/05/2008 | US20080128126 Downhole Tool System and Method for Use of Same |
| 05/29/2008 | US20080125981 Drill bit performance analysis tool |
| 05/08/2008 | WO2008016868A8 Downhole abrading tool having a taggant injection assembly for indicating excessive wear |
| 05/07/2008 | CN201056987Y Dust clearing device |
| 05/07/2008 | CN101173599A Supporting node for turbo-drill |
| 04/24/2008 | WO2008005718A3 Downhole abrading tools having excessive wear indicator |
| 04/15/2008 | US7357197 Method and apparatus for monitoring the condition of a downhole drill bit, and communicating the condition to the surface |
| 04/15/2008 | US7357196 Method and system for predicting performance of a drilling system for a given formation |
| 04/08/2008 | US7353892 Guide frame for an earth drilling apparatus |
| 03/26/2008 | EP1902196A1 Method and apparatus for collecting drill bit performance data |
| 03/20/2008 | US20080066959 Method and apparatus for collecting drill bit performance data |
| 02/21/2008 | WO2008005717A3 Downhole abrading tool having taggants for indicating excessive wear |
| 02/21/2008 | WO2008005714A3 Downhole abrading tools having a hydrostatic chamber and uses therfor |
| 02/13/2008 | CN201021604Y Bearing node for turbine driller |
| 02/07/2008 | WO2008016868A1 Downhole abrading tool having a taggant injection assembly for indicating excessive wear |
| 01/31/2008 | US20080023225 Wear indication apparatus and method |
| 01/10/2008 | WO2008005717A2 Downhole abrading tool having taggants for indicating excessive wear |
| 01/10/2008 | WO2008005715A1 Downhole abrading tools having fusible material and uses therefor |
| 01/10/2008 | WO2008005714A2 Downhole abrading tools having a hydrostatic chamber and uses therfor |
| 01/08/2008 | US7316278 Method for determining drilling malfunction by correlation of drilling operating parameters and drilling response parameters |
| 01/03/2008 | US20080000687 Downhole abrading tools having fusible material and uses therefor |
| 12/27/2007 | CA2656567A1 Cuttings removal wipers for cutter assemblies and method |
| 12/21/2007 | WO2007143773A1 Microtunnelling system and apparatus |
| 12/21/2007 | CA2649801A1 Microtunnelling system and apparatus |
| 12/18/2007 | US7308946 Method of cleaning hole diggers and spot cultivators and hole digger cleaning device |
| 12/12/2007 | EP1454031B1 An improved transmission sleeve |
| 11/22/2007 | WO2007081651A3 Filtering and detection of telemetry |
| 11/13/2007 | CA2443111C Method and apparatus for analyzing casing wear and retrieval of metallic fragments |
| 11/07/2007 | CN101069037A A pipe joint lubrication device |
| 10/31/2007 | CN200968179Y Dust proof water injection type helical reclaiming anchor rod and drill stem Injector |
| 10/30/2007 | CA2339683C Device for application of dope on male threads |
| 08/28/2007 | US7261167 Method and system for predicting performance of a drilling system for a given formation |
| 08/14/2007 | CA2150733C A rotatable pressure seal |
| 08/01/2007 | CN101010171A Plier |
| 07/04/2007 | CN1324217C Bit pup joint capable of producing hydraulic pulsation in downhole |
| 06/12/2007 | US7228921 Ice auger covering apparatus |
| 05/30/2007 | CN1973108A Wear indication apparatus and method |
| 05/15/2007 | CA2281759C Improved auger cleaners |
| 05/09/2007 | EP1781893A1 Horizontal perspective simulator |
| 05/01/2007 | CA2405234C Roller cone drill bit having lubrication contamination detector and lubrication positive pressure maintenance system |
| 04/11/2007 | CN2888057Y Well-bore sand-removal joint |
| 03/21/2007 | CN2881060Y Protective device of pneumatic anchor rod rope drilling machine |
| 03/07/2007 | EP1759379A2 Horizontal perspective display |
| 02/22/2007 | WO2006133243B1 Method and apparatus for collecting drill bit performance data |
| 02/06/2007 | CA2223662C Method for determining drilling bit wear |
| 12/14/2006 | WO2006133243A1 Method and apparatus for collecting drill bit performance data |
| 12/14/2006 | US20060278436 Drilling apparatus with reduced exposure of cutters |
| 12/13/2006 | CN1289780C Packer for hydraulic underreamer |
| 10/17/2006 | CA2250030C Method of assaying downhole occurrences and conditions |
| 10/03/2006 | CA2326489C Drillstring with stabilisers for re-entering a primary wellbore |
| 09/21/2006 | WO2005086565A3 Leadless sub assembly for downhole detection system |
| 09/06/2006 | CN1273716C Roller bit with roller pull-off prevention alarm apparatus |
| 08/29/2006 | US7096978 Drill bits with reduced exposure of cutters |
| 08/17/2006 | CA2536720A1 Method of measuring stick slip, and system for performing same |
| 08/15/2006 | CA2268444C Apparatus and method for drilling boreholes |
| 08/03/2006 | DE202006005967U1 Positioning device for geological drilling equipment has gutters each having framework in which drilling equipment may be arranged |
| 08/01/2006 | US7085696 Iterative drilling simulation process for enhanced economic decision making |
| 07/18/2006 | CA2365310C Wellbore primary barrier and related systems |
| 06/27/2006 | US7066280 Method and apparatus for monitoring and recording of the operating condition of a downhole drill bit during drilling operations |
| 06/22/2006 | WO2006065149A1 A pipe joint lubrication device |
| 06/10/2006 | CA2487380A1 Method of avoiding the need for a scraper run in drill out operations and a downhole drilling motor assembly |
| 05/24/2006 | CN2782909Y Drilling template for wall |
| 05/16/2006 | US7044242 Roller cone bits with reduced packing |
| 05/11/2006 | WO2006048841A1 Generating a geometric database of coiled tubing for use in designing service of the coiled tubing |
| 05/11/2006 | US20060099885 Wear indication apparatus and method |
| 05/09/2006 | CA2525221A1 Performance forecasting and bit selection tool for drill bits |
| 05/09/2006 | CA2250185C Method of regulating drilling conditions applied to a well bit |
| 04/27/2006 | WO2005119376A3 Horizontal perspective display |