| Patents for E21B 1 - Percussion drilling (2,080) |
|---|
| 11/16/2011 | CN202039768U Crushing mechanism for rotatable drill pipe |
| 11/16/2011 | CN101694147B High water-based hydraulic rock drill |
| 11/16/2011 | CN101509349B Electromagnetical drilling impactor |
| 11/03/2011 | WO2011136830A1 Vibrating tool |
| 11/03/2011 | WO2011136663A1 A vibrational or a downhole apparatus with a magnetically coupled drive |
| 10/27/2011 | WO2011133560A1 Air compressor system and method of operation |
| 10/27/2011 | CA2795788A1 Air compressor system and method of operation |
| 10/19/2011 | CN102223986A Rock drilling machine and axial bearing module |
| 10/12/2011 | CN102213074A Rotary impact type rock drilling machine and double-layer drilling rod mechanism |
| 10/06/2011 | WO2011123028A1 Rock drilling machine and use thereof for hindering occurrence and spreading of cavitation bubbles |
| 10/06/2011 | CA2792363A1 Rock drilling machine and use thereof for hindering occurrence and spreading of cavitation bubbles |
| 10/05/2011 | CN202000887U Waste residue collector for impact drill |
| 10/05/2011 | CN101235703B Air percussion hammer for well drilling |
| 10/05/2011 | CN101146978B Ground drilling hammer and the driving method |
| 10/04/2011 | US8028772 Internally dampened percussion rock drill |
| 09/28/2011 | CN201991439U 新型石油勘探钻机 The new oil exploration rig |
| 09/28/2011 | CN201991433U 钻凿大孔径岩石孔用冲击器 Rock drilling large diameter holes impactor |
| 09/21/2011 | CN201982009U 空心滑阀式液压冲击器 Hollow spool valve impactor |
| 09/21/2011 | CN201982008U 一种摆动活齿轮齿廓型面连接的凿岩机转钎机构 One kind of swinging movable gear tooth profile of the surface of the rock drill turn solder connection mechanism |
| 09/21/2011 | CN201982007U 一种余弦齿廓型面连接的凿岩机转钎机构 Cosine tooth profile of the surface of the rock drill turn solder connection mechanism |
| 09/21/2011 | CN201982006U 一种旋轮线型面连接的凿岩机转钎机构 One kind of rotary drilling machine connected linear surface turn brazing agency |
| 09/21/2011 | CN201982005U 一种三圆弧等距型面连接的凿岩机转钎机构 A three equidistant arc connecting surface drill rigs turn brazing agency |
| 09/21/2011 | CN201982004U 一种多面形圆弧等厚型面连接的凿岩机转钎机构 A multi-plane arc-shaped surface and so thick solder connections drills transfer agency |
| 09/21/2011 | CN201982003U 偏心轮推杆滚柱活齿内齿轮齿廓型面连接的凿岩转钎机构 Roller putter eccentric gear tooth profile of the inner surface drilling solder connections turn institution |
| 09/21/2011 | CN201982002U 一种高阶椭圆型面连接的凿岩机转钎机构 One kind of high-order elliptic surface drill rigs turn connected brazing agency |
| 09/15/2011 | WO2011062925A4 Down-the-hole drill hammer having a reverse exhaust system and segmented chuck assembly |
| 09/15/2011 | US20110220420 Feed Chain Automatic Tensioner |
| 09/14/2011 | CN201972594U 多功能液压打桩机 Multifunction hydraulic hammers |
| 09/07/2011 | CN201963190U 一种用于薄墙深孔施工的冲击式扁平钻头装置 Construction of a thin wall deep impact drill apparatus for flat |
| 09/07/2011 | CN102174876A A drilling apparatus having in-line extending wings and driving method thereof |
| 09/06/2011 | US8011443 Striking mechanism for a handheld power tool |
| 09/01/2011 | WO2011059217A3 System for preventing idle blow and adjusting hitting power of breaker |
| 08/31/2011 | CN201953314U 冲击式钻机斜孔修正器 Impact drill inclined holes corrector |
| 08/31/2011 | CN201953306U 频率可调的锚杆钻机用液压冲击器 Frequency adjustable hydraulic impactor Roofbolter |
| 08/31/2011 | CN102168522A Drill rod rotating mechanism of rock drill connected by tooth profile shaped surface of swing active gear |
| 08/30/2011 | US8006784 Backhead and drill assembly with backhead |
| 08/30/2011 | CA2516542C Method for drilling and completing wells |
| 08/25/2011 | DE102010008819A1 Schlagdrehbohrvorrichtung und Verfahren zum Betrieb Schlagdrehbohrvorrichtung and method for operating |
| 08/24/2011 | CN201943568U 一种打桩孔装置 One kind of piling hole means |
| 08/24/2011 | CN201943567U 一种马达冲击传动轴 A motor shaft impact |
| 08/17/2011 | CN102155155A Dual-purpose striking-pulling rock-drilling machine |
| 08/17/2011 | CN102155154A Pressure controlled automatic reversing working device for punch of rock drilling machine |
| 08/17/2011 | CN102155153A Rock drilling rotational mechanism connected with tooth profile molding surface of roller movable-tooth inner gear of eccentric wheel push rod |
| 08/17/2011 | CN102155152A Gadder borer-turning mechanism connected with cosine tooth profile |
| 08/17/2011 | CN102155151A Rock drill rotational mechanism connected with spinning roller linear surface |
| 08/17/2011 | CN102155150A Crushing mechanism with gas inlet pipe |
| 08/10/2011 | CN201924825U 一种液力冲击装置 One kind of hydraulic impact device |
| 08/10/2011 | CN201924824U 装饰用冲击钻消声防尘罩 Dust decorative impact drill silencer |
| 08/10/2011 | CN102146773A Drilling machine shock absorber and using method thereof |
| 08/03/2011 | EP2349655A1 Rock drilling machine and axial bearing module |
| 08/03/2011 | CN201917465U 超声波钻探器 Ultrasonic drilling unit |
| 08/03/2011 | CN201915823U 一种双向气动潜孔锤 A two-way DTH |
| 07/28/2011 | WO2011062925A3 Down-the-hole drill hammer having a reverse exhaust system and segmented chuck assembly |
| 07/27/2011 | CN201908565U Base plate anchor rope drilling machine for coal mine tunnel |
| 07/27/2011 | CN102134963A Cylinder controlled automatic punching pile machine |
| 07/27/2011 | CN102134962A Automatic punching pile driver |
| 07/27/2011 | CN102134961A Punching pile machine with self-turning prevention function |
| 07/13/2011 | CN102121349A High-order elliptic profile connected hammer drill rotational mechanism |
| 07/06/2011 | EP1101012B1 Mechanism for dropping a plurality of balls into tubulars used in drilling, completion and workover of oil, gas and geothermal wells, and method of using same |
| 07/05/2011 | CA2445846C Rock breaker tool |
| 06/30/2011 | WO2011078421A1 Air hammer for a boring machine |
| 06/30/2011 | CA2784979A1 Air hammer for a boring machine |
| 06/29/2011 | CN201883940U Electrically-driven lifting punching machine |
| 06/29/2011 | CN102108835A Motor impact transmission shaft |
| 06/29/2011 | CN102108834A Rock drilling machine |
| 06/22/2011 | CN201874449U Suspended pneumatic drill for excavator |
| 06/22/2011 | CN201874448U Torsional impact transmission device |
| 06/22/2011 | CN102102487A Multifunctional hydraulic pile hammer |
| 06/15/2011 | CN201865568U Full-hydraulic multifunctional power head |
| 06/15/2011 | CN201865562U Novel inspection hole punching tool of nucleon densimeter |
| 06/15/2011 | CN102094581A Hammer |
| 06/15/2011 | CN102094576A Crushing mechanism |
| 06/15/2011 | CN102094575A Breaking mechanism with rotatable drill rod |
| 06/14/2011 | US7958952 Pulse rate of penetration enhancement device and method |
| 06/08/2011 | CN201857894U Improved hydraulic percussion drill |
| 06/08/2011 | CN201857893U Hydraulic percussion drill |
| 06/03/2011 | CA2714704A1 Wellbore percussion adapter and tubular connection |
| 06/01/2011 | CN201851101U Experimental measurement platform system applicable to high-power transmission and communication system |
| 06/01/2011 | CN201851034U Backward flowing prevention device |
| 06/01/2011 | CN201851000U Drill lifting reverse beating impactor |
| 05/31/2011 | US7950475 Percussion drilling assembly having a floating feed tube |
| 05/26/2011 | WO2011062925A2 Down-the-hole drill hammer having a reverse exhaust system and segmented chuck assembly |
| 05/26/2011 | CA2777356A1 Down-the-hole drill hammer having a reverse exhaust system and segmented chuck assembly |
| 05/25/2011 | CN102076931A Bottom-hole assembly, and method and system for transmitting data from bottom-hole assembly |
| 05/25/2011 | CN102071872A Compact drilling machine |
| 05/18/2011 | CN201835738U Spiral piston for air hammer |
| 05/18/2011 | CN102066685A Wellbore instruments using magnetic motion converters |
| 05/11/2011 | CN201826770U Percussion bit assembly for ground auger |
| 05/11/2011 | CN101581195B Environmental-friendly downhole hammer rock drilling machine |
| 05/10/2011 | CA2497905C Impact adapter for transfer of impacts and rotation from an impact rock drilling machine to a drill string |
| 05/04/2011 | CN201818234U Anti-falling device under torsion impacter |
| 05/04/2011 | CN101059060B Overrunning impact drill |
| 04/27/2011 | CN201810202U Multi-functional excavator type arm support folding hydraulic drilling machine |
| 04/20/2011 | CN201802409U Multi-arm rock drill |
| 04/20/2011 | CN102022860A Process method and equipment for constructing ground source heat pump well |
| 04/13/2011 | EP2307668A1 A bottom-hole assembly, and a method and system for transmitting data from a bottom-hole assembly |
| 04/13/2011 | CN102016217A Percussion assisted rotary earth bit and method of operating the same |
| 04/13/2011 | CN102012324A Ultrasonic drilling device |
| 04/13/2011 | CN102011546A Large-diameter engineering well holing construction method in super-thick pebble formation |
| 04/07/2011 | US20110081208 Automatically adjustable caisson clamp |