| Patents for E21B 1 - Percussion drilling (2,080) |
|---|
| 06/21/2006 | EP1272727B1 Apparatus to actuate downhole tool |
| 06/15/2006 | WO2006062309A1 A ground drilling hammer and the driving method |
| 06/15/2006 | US20060128990 Non-corrosive amphoteric surfactants and method of well treatment |
| 06/15/2006 | US20060124333 Hollow piston hammer device with air equilibration and idle openings |
| 06/15/2006 | CA2589916A1 A ground drilling hammer and the driving method |
| 06/08/2006 | WO2005089458A3 Use of electromagnetic acoustic transducers in downhole cement evaluation |
| 06/07/2006 | EP1563160B1 Tensioning system for production tubing in a riser at a floating installation for hydrocarbon production. |
| 05/31/2006 | CN1257786C Drilling and punching machine |
| 05/30/2006 | US7051525 Method and apparatus for monitoring operation of percussion device |
| 05/23/2006 | US7048073 Fastener installation systems |
| 05/23/2006 | CA2292676C Electrically sequenced tractor |
| 05/18/2006 | WO2006014417A3 Coiled tubing with dual member drill string |
| 05/11/2006 | DE102005051585A1 Pneumatisches Bodenstechwerkzeug Pneumatic floor grooving tool |
| 05/10/2006 | EP1537289A4 New and improved method and apparatus involving an integrated or otherwise combined exit guide and section mill for sidetracking or directional drilling from existing wellbores |
| 05/10/2006 | EP1295010B1 Method of opening joints between drilling components, and rock drill |
| 05/09/2006 | US7040421 Liquid driven downhole drilling machine |
| 05/04/2006 | CA2585264A1 Underground piercing tool |
| 05/02/2006 | CA2214861C Hydraulic drive for rotation of a rock drill |
| 04/27/2006 | WO2006043878A1 Drill bushing |
| 04/27/2006 | CA2579306A1 Drill bushing |
| 04/26/2006 | EP1648663A2 Hollow piston hammer device with air equilibration and idle openings |
| 04/26/2006 | EP1540219A4 Method and apparatus for replacement of underground pipe |
| 04/26/2006 | CN1763416A Oil syringe |
| 04/25/2006 | US7032684 Method of opening joints between drilling components, and rock drill |
| 04/19/2006 | EP1604092A4 Method for drilling and completing wells |
| 04/19/2006 | EP1412606B1 Impact device |
| 04/18/2006 | US7028785 Pneumatic impact piercing tool |
| 04/18/2006 | CA2190248C Reverse percussion device |
| 04/13/2006 | WO2006003259A8 Method for controlling percussion device, software product, and percussion device |
| 04/12/2006 | EP1274916B1 Percussive down-the-hole rock drilling hammer and piston therefor |
| 04/12/2006 | CN1759271A Multiple dispensing check valve delivery system |
| 04/05/2006 | CN1756890A Method for drilling and completing wells |
| 03/30/2006 | WO2006032734A1 Method for breaking rock |
| 03/28/2006 | US7017681 Device for performing hydrodynamic action on wellbore walls |
| 03/22/2006 | EP1558831A4 Method and apparatus for varying the density of drilling fluids in deep water oil drilling applications |
| 03/22/2006 | EP1070569B1 Impact machine |
| 03/21/2006 | US7013996 Impact device |
| 03/09/2006 | US20060048957 Rock breaking machine and lubricating method |
| 03/08/2006 | EP1632636A1 Rock breaking machine and lubricating method |
| 03/08/2006 | EP1330589B1 Rock drilling machine |
| 03/08/2006 | CN2763452Y Hydraulic impactor for well drilling |
| 03/01/2006 | CN2761802Y Internal rotating hydraulic rock drill gun |
| 02/22/2006 | EP1454028A4 Proppant recovery system |
| 02/16/2006 | US20060032533 System and method for automating or metering fluid recovered at a well |
| 02/15/2006 | CN1735486A Rock drilling machine and axial bearing |
| 02/09/2006 | DE10101708B4 Verfahren zum Felsmeißeln A method for rock chisels |
| 02/08/2006 | CN1730898A Combined core drilling system driven by downhole motor and impactor |
| 02/01/2006 | EP1620628A2 Arctic platform |
| 02/01/2006 | CN1729338A An improved device |
| 01/26/2006 | US20060016607 Arctic platform method |
| 01/19/2006 | US20060012239 Head for excavator mounted to power shovel |
| 01/19/2006 | US20060011362 Power transmission unit of an impactor, a hydraulic jet impactor and the application thereof |
| 01/12/2006 | WO2006003259A1 Method for controlling percussion device, software product, and percussion device |
| 12/28/2005 | EP1540137A4 System and mehtod for automating or metering fluid recovered at a well |
| 12/28/2005 | EP1485567A4 Mono-diameter wellbore casing |
| 12/22/2005 | WO2005121492A1 Pneumatic perforator |
| 12/21/2005 | EP1606487A2 Pneumatic perforator with independent rotation of the drill |
| 12/21/2005 | EP1458949A4 Rotary support table |
| 12/21/2005 | EP0856637B1 Shock-absorbing mechanism for hydraulic hammering device |
| 12/14/2005 | EP1604092A2 Method for drilling and completing wells |
| 12/08/2005 | US20050269107 Mono-diameter wellbore casing |
| 12/01/2005 | US20050263288 Tensioning system for production tubing in a riser at a floating installation for hydrocarbon production |
| 11/29/2005 | CA2278036C Percussion movement apparatus |
| 11/24/2005 | US20050257941 Pneumatic impact piercing tool |
| 11/17/2005 | US20050252686 Electrically sequenced tractor |
| 11/16/2005 | EP1594659A1 Rock drilling machine and axial bearing |
| 11/03/2005 | US20050244229 Method and apparatus for replacement of underground pipe |
| 11/02/2005 | EP1590549A2 Blow station bottom plug actuating mechanism |
| 11/02/2005 | CN2737926Y Simple driller |
| 11/01/2005 | US6959967 Hammer with high pressure shut-off |
| 11/01/2005 | US6959478 Shockproof spindle |
| 10/27/2005 | WO2005080051A8 Pressure-fluid-operated percussion device |
| 10/27/2005 | US20050236167 Impact adapter for transfer of impacts and rotation from an impact rock drilling machine to a drill string |
| 10/26/2005 | EP1588013A2 Multiple dispensing check valve delivery system |
| 10/20/2005 | US20050232708 Automatically adjustable caisson clamp |
| 10/20/2005 | US20050230153 Device for simulataneously casing a hole while drilling |
| 10/12/2005 | CN1682009A System and method for automating or metering fluid recovered at a well |
| 10/05/2005 | CN1678432A Sonic drill |
| 09/29/2005 | WO2005090737A1 Water hammer |
| 09/29/2005 | WO2005089458A2 Use of electromagnetic acoustic transducers in downhole cement evaluation |
| 09/22/2005 | US20050208224 Coating shank adapters with phosphoric acid and zinc ions, zinc manganese ions or manganese ions, followed by oiling or waxing the parts |
| 09/22/2005 | US20050205268 Method and apparatus for generation of acoustic shear waves through casing using physical coupling of vibrating magnets |
| 09/22/2005 | US20050205248 Use of electromagnetic acoustic transducers in downhole cement evaluation |
| 09/21/2005 | EP1576253A2 Method using particulate chelates to stimulate production of petroleum in carbonate formations |
| 09/08/2005 | US20050194141 Soluble fibers for use in resin coated proppant |
| 09/07/2005 | CN1664298A Electric pick with low noise and weak recoil |
| 09/07/2005 | CN1218114C Monitor system for drilling procedure |
| 09/06/2005 | US6938708 Electrically sequenced tractor |
| 09/01/2005 | WO2005080051A1 Pressure-fluid-operated percussion device |
| 08/31/2005 | CN2721891Y Air intake dustproof device of hand held IC rock driller |
| 08/25/2005 | DE10392218T5 Kraftübertragungsmechanik, Schlagwerk mit Strömungsmittelantrieb und dessen Verwendung Power transmission mechanism, percussion with fluid drive and use thereof |
| 08/24/2005 | EP1565622A1 An improved device |
| 08/24/2005 | CN2720077Y Novel impact-drill chain-type impacting converter |
| 08/17/2005 | EP1563160A2 Tensioning system for production tubing in a riser at a floating installation for hydrocarbon production. |
| 08/17/2005 | CN2718062Y Hammer blowing well, drilling, pilling and reaming machine |
| 08/03/2005 | EP1558831A2 Method and apparatus for varying the density of drilling fluids in deep water oil drilling applications |
| 08/03/2005 | EP1089854B1 Hammer device |
| 08/02/2005 | US6925392 Method for measuring fluid chemistry in drilling and production operations |
| 08/02/2005 | US6923270 Pneumatic impact piercing tool |
| 07/27/2005 | CN1646786A Mono-diameter wellbore casing |