| Patents for E21B 12 - Accessories for drilling tools (993) |
|---|
| 05/21/2014 | CN203603760U 一种井下钻具 A downhole drilling tool |
| 05/21/2014 | CN102678060B 自动旋转n×360°螺旋钻杆除泥机械装置 Auto rotate n × 360 ° spiral drill desilter mechanical devices |
| 05/14/2014 | CN103791996A 一种钻头扭转测量装置及测量方法 A drill torsion measuring apparatus and measurement method |
| 05/07/2014 | CN203584319U 旋挖钻机的除泥器 Rotary drilling rig Desilter |
| 05/07/2014 | CN203584318U 旋挖钻机的除泥器 Rotary drilling rig Desilter |
| 05/07/2014 | CN203584317U 钻井螺旋机保护装置 Drilling screw machine protection device |
| 05/07/2014 | CN203584316U 坑道钻机钻具减震结构 Drilling rig drill damping structure |
| 05/06/2014 | US8718802 Well prog execution facilitation system and method |
| 05/06/2014 | CA2647416C Drill bit assembly with a logging device |
| 04/30/2014 | CN203570210U Drilling buffering compression-resistant dustproof waterproof protective device for power head |
| 04/26/2014 | CA2831233A1 Centrifugal backspin brake |
| 04/23/2014 | CN102434110B High-speed turbine section for turbine drilling tool |
| 04/17/2014 | US20140102791 Wear Indicators for Drilling Equipment |
| 04/16/2014 | CN103726794A Self-sharpening and abrasion-resistant tool |
| 04/15/2014 | US8695729 PDC sensing element fabrication process and tool |
| 04/10/2014 | WO2014055062A1 Well tools having energized seals |
| 04/09/2014 | EP2715033A1 Wear indicators for drilling equipment |
| 04/02/2014 | CN203515364U Drag reduction tool |
| 03/26/2014 | CN203499570U Self-locking mechanism |
| 03/19/2014 | CN103649451A System and method for determining a health condition of wellsite equipment |
| 03/19/2014 | CN103644443A Intelligent lubricating system of full-hydraulic crawler-type cutting drill chain |
| 03/19/2014 | CN103643896A Caterpillar-type deep hole hydraulic cutting drill |
| 03/19/2014 | CN103643894A Crawler-type hydraulic cutting drilling machine of large-air-volume air compressor system |
| 03/13/2014 | WO2014039604A1 Functionally gradient elastomer material for downhole sealing element |
| 03/06/2014 | WO2014035427A1 System and method for measuring gaps using an opto-analytical device |
| 02/26/2014 | CN203452642U Device for floor type rotating elevating telescoping drilling tool of piling machine |
| 02/19/2014 | CN103590750A Pounding head lubricating oil control device and control method for hydraulic rock drilling rig |
| 02/12/2014 | CN203430429U Novel rotary digging machine drilling bucket bulldozing apparatus |
| 02/12/2014 | CN203430428U Device for positioning drilling equipment |
| 02/12/2014 | CN103582738A Wear indicators for drilling equipment |
| 02/11/2014 | US8646521 Method and apparatus for cleaning a drill string |
| 02/11/2014 | CA2745723C Method of monitoring wear of rock bit cutters |
| 01/29/2014 | CN103547764A Drilling system having slot for underwater storage of BOP assembly |
| 01/22/2014 | CN103527101A Drilling buffer compression-resisting, dustproof and waterproof protective device of power head |
| 01/09/2014 | WO2014007824A1 Displaceable components in drilling operations |
| 01/09/2014 | CA2878397A1 Displaceable components in drilling operations |
| 01/08/2014 | CN203383727U Screw drill tool with long service life and high performance |
| 01/01/2014 | CN103485726A Device used for weakening stick-slip vibration of downhole drilling tool and control method of device |
| 01/01/2014 | CN103485722A Novel expanded-base scraper pan and base expanding method thereof |
| 12/25/2013 | CN203362046U Novel drilling bucket bulldozing device of rotary excavating machine |
| 12/18/2013 | CN103452473A Method for performing small-diameter deep well construction by using full-face high-counterweight drill bit device |
| 12/11/2013 | CN103437714A Turbine stator for turbine drill |
| 12/04/2013 | CN203321335U Exploration connecting sleeve |
| 12/04/2013 | CN203321334U Protection device for drilling machine |
| 11/20/2013 | CN203296705U Automatic drill rod washing device |
| 11/20/2013 | CN203296704U Soil stirring device for helical blade |
| 11/20/2013 | CN203296703U Nylon board replacing device of horizontal directional drilling machine |
| 11/13/2013 | CN203285329U Floor type apparatus for rotating and elevating drilling tool of piling machine |
| 11/06/2013 | CN203271596U Multi-hydrodynamic-cylinder whirl-resisting balancer used for PDC (Polycrystalline Diamond Compact) drill bit |
| 11/06/2013 | CN203271581U Perforating machine for drilling holes |
| 11/06/2013 | CN103382816A Device for removing cuttings bed in horizontal well and preventing suction in tripping-out blockage |
| 11/05/2013 | US8573322 Hook for electric power tools and electric power tool equipped with the hook |
| 10/29/2013 | CA2679189C Blast hole drill bit carousel and a blast hole drill including a blast hole drill bit carousel |
| 10/23/2013 | CN103362438A Power section of hydraulic balance turbodrill |
| 10/17/2013 | US20130270007 Apparatuses and methods for obtaining at-bit measurements for an earth-boring drilling tool |
| 10/16/2013 | CN203238627U Multi-functional drilling barrel |
| 10/16/2013 | CN203235370U Dust remover for down-the-hole drill |
| 10/09/2013 | CN103343666A Novel oil storage compensation structure |
| 10/03/2013 | WO2013148509A1 Identification emitters for determining mill life of a downhole tool and methods of using same |
| 10/03/2013 | US20130256032 Identification Emitters for Determining Mill Life of a Downhole Tool and Methods of Using Same |
| 09/26/2013 | US20130248249 One Trip Tubular Cleaning and Drilling Additional Open Hole |
| 09/26/2013 | DE102012006306A1 Cleaning apparatus used for cleaning auger of drilling excavator, has cleaning device that is set outside the thread portion of auger in original position and is extended up in thread portion of auger in cleaning position |
| 09/25/2013 | CN103321568A Long-service-life high-performance screw drill |
| 09/23/2013 | CA2772515A1 Hydraulic jar with multiple high pressure chambers |
| 09/18/2013 | CN203201478U Downlink hole positive and negative pressure comprehensive powder discharging device |
| 09/17/2013 | US8534391 Cutting elements and earth-boring tools having grading features |
| 09/11/2013 | CN203188916U Voice prompt drilling machine for non-excavation construction |
| 09/11/2013 | CN203188908U Integrated ground source heat hole power excavating device |
| 08/28/2013 | CN203161084U Multifunctional rotary drilling rig |
| 08/28/2013 | CA2806742A1 Torque control device for a downhole drilling assembly |
| 08/27/2013 | US8517123 Milling cap for a polycrystalline diamond compact cutter |
| 08/22/2013 | WO2013120807A1 Pick tool and method of using same |
| 08/20/2013 | CA2656567C Cuttings removal wipers for cutter assemblies and method |
| 08/14/2013 | CN203129965U Drill rod surface cleaning device for drill hoisting |
| 08/07/2013 | CN203114181U Engineering drill rod balance weight |
| 07/31/2013 | CN203097731U Drill column cleaner for oil drilling |
| 07/24/2013 | CN203081306U Mud-prevention diamond compact scraper type drill |
| 07/24/2013 | CN203081288U Drilling device |
| 07/24/2013 | CN103216195A Dual-purpose device for drilling and cleaning well |
| 07/18/2013 | WO2013105797A1 Apparatus for treating slime using drill for ground excavation and method for same |
| 07/17/2013 | CN203066857U Drilling tool for clay layer drilling and coring |
| 07/10/2013 | CN203050528U Novel transfer case |
| 07/10/2013 | CN203050527U Deslagging head device for double-pipe directional drilling machine |
| 07/03/2013 | CN203035097U Shaft bottom engine and driving shaft tube thereof |
| 07/03/2013 | CN203035096U Drill falling prevention device of rotary drilling rig |
| 07/03/2013 | CN103184835A Bit sleeve with compression band retainers |
| 06/27/2013 | WO2013096385A1 Apparatus and method to clean a tubular member |
| 06/26/2013 | CN102278070B Drilling pressure stabilizer |
| 06/19/2013 | CN203008793U Resistance reduction pup joint for drill |
| 06/19/2013 | CN203008792U Anti-falling device for bearing block of high-speed turbodrill |
| 06/19/2013 | CN203008779U Moving type roof expansion bolt punching device |
| 06/19/2013 | CN103161407A Soil pushing device special for spiral |
| 06/13/2013 | WO2012177442A4 Coatings for welbore tools, components having such coatings, and related methods |
| 06/12/2013 | CN202990846U Spiral hole forming machine of cast-in-place pile |
| 06/12/2013 | CN103147689A Multifunctional rotary drilling rig |
| 06/06/2013 | WO2013081606A1 Drill bit with seal having spheres in a matrix seal material |
| 06/06/2013 | CA2856537A1 Drill bit with seal having spheres in a matrix seal material |
| 06/05/2013 | CN202970492U Guide rail gap adjusting mechanism of drilling machine |
| 06/01/2013 | CA2795945A1 An improved wellbore cleaning apparatus and method |
| 05/30/2013 | WO2013078317A1 Interface for controlling and improving drilling operations |