| Patents for E21B 3 - Rotary drilling (4,061) |
|---|
| 10/04/2006 | CN1278010C Hydraulic wet drill |
| 10/03/2006 | US7114577 Safemode operating system for a drilling or service rig |
| 09/27/2006 | CN2821129Y Full hydraulic crawler type rotary digging drill machine of large triangle structure |
| 09/27/2006 | CN1839243A Make-up control system for tube |
| 09/22/2006 | CA2529648A1 Method and apparatus for introducing elongate members into the ground |
| 09/20/2006 | CN2818758Y Hydraulic turntable device with self-sealing function for oil field |
| 09/20/2006 | CN2818757Y Multifunctial hydraulic mountain drilling structure |
| 09/19/2006 | US7107875 Methods and apparatus for connecting tubulars while drilling |
| 09/13/2006 | CN2816322Y Apparatus for boring construction |
| 09/13/2006 | CN2816319Y Pneumatic rock driller for mine |
| 09/13/2006 | CN2815995Y 钻机绞车 Rig Winch |
| 09/05/2006 | US7100709 Feed table pivot pin constraining device |
| 09/05/2006 | US7100698 Make-up control system for tubulars |
| 08/31/2006 | WO2006089400A1 A method of geothermal loop installation |
| 08/31/2006 | WO2006089349A1 An apparatus for driving a shaft in an excavating device |
| 08/30/2006 | CN2811536Y Module combination type multifunctional boring machine |
| 08/30/2006 | CN2811535Y Center water-injection type air-operated coal borer |
| 08/29/2006 | US7096977 Pipe running tool |
| 08/29/2006 | US7096974 Handle for a hand-held power tool |
| 08/24/2006 | WO2006007240B1 Retrofit kit for a modular control apparatus for a power impact tool |
| 08/24/2006 | US20060185904 Rotatable support for inclinable masts of drilling machines |
| 08/22/2006 | US7093679 Foundation drilling apparatus and method with continuously variable hydraulic differential rotary table |
| 08/16/2006 | EP1689967A2 Drilling apparatus with anti-vibration inertial body |
| 08/16/2006 | CN2806739Y Epicyclic gear water-injection type electric coal drill |
| 08/15/2006 | US7090035 Method and system for connecting pipe to a top drive motor |
| 08/15/2006 | US7090032 Electric power tool |
| 08/15/2006 | US7090031 Intelligent tightening spindle with integrated measurement transducer, servo amplifier, and data processing unit |
| 08/15/2006 | CA2181658C Anchor torque controller for anchor installing machines |
| 08/03/2006 | WO2005065364A3 Instrumented internal blowout preventer valve for measuring drill string drilling parameters |
| 08/02/2006 | CN1811125A Driller design scheme |
| 08/01/2006 | CA2411290C Auger/vehicle interface jig |
| 07/27/2006 | WO2006078883A2 Double swivel apparatus and method |
| 07/20/2006 | WO2006007240A3 Retrofit kit for a modular control apparatus for a power impact tool |
| 07/19/2006 | CN2797610Y Single phase electric motor type agricultural well drilling machine |
| 07/19/2006 | CN2797608Y Spiral digging drilling machine |
| 07/19/2006 | CN1804361A Earthquake dry well drill |
| 07/12/2006 | CN2795545Y Disc type braking friction sheet for drilling machine |
| 07/12/2006 | CN2795434Y Variable amplitude link rod mechanism of rotary digging and drilling machine movable arm |
| 07/05/2006 | EP1676015A1 Make-up control system for tubulars |
| 07/05/2006 | CN2793290Y Apparatus for laying pipeline underground by non drill boring |
| 07/05/2006 | CN2793286Y Fluted shield of driller |
| 06/28/2006 | CN2791235Y Rotary digger pole-folding-back and fixing mechanism |
| 06/28/2006 | CN2791234Y Electric well-drilling machine |
| 06/28/2006 | CN2791233Y Drilling device for drilling gate valve and gate board of high-pressure natural gas well mouth |
| 06/21/2006 | EP1671010A1 Method and apparatus for controlling the ascent and descent of pipe in a well bore |
| 06/21/2006 | CN1791731A Systems and methods using a continuously variable transmission to control one or more system components |
| 06/14/2006 | CN1786408A Construction apparatus |
| 06/13/2006 | US7059427 Automatic drilling system |
| 06/08/2006 | WO2006059146A1 Elevator for use in handling pipe and method for handling pipe |
| 06/08/2006 | CA2588728A1 Elevator for use in handling pipe and method for handling pipe |
| 06/07/2006 | CN2786269Y Column type hydraulic rotary drilling rig |
| 06/06/2006 | US7055630 Erection of signs using a single vehicle |
| 06/06/2006 | US7055622 Power tool having a handle and a pivotal tool body |
| 05/31/2006 | CN2784568Y Gear shifting mechanism for power head of rotary drilling rig |
| 05/24/2006 | EP1659258A2 Top drive for casing connection |
| 05/24/2006 | EP1658415A1 A drilling device with a telescopic arm |
| 05/23/2006 | US7048077 Drilling machine with pneumatic control |
| 05/23/2006 | CA2292676C Electrically sequenced tractor |
| 05/18/2006 | WO2006014417A3 Coiled tubing with dual member drill string |
| 05/17/2006 | EP1266119B1 Method and apparatus for handling tubular goods |
| 05/17/2006 | CN2780971Y Piston rod push type roofbolt drilling machine |
| 05/11/2006 | WO2005113928A3 System for directional boring including a drilling head with overrunning clutch and method of boring |
| 05/11/2006 | CA2586914A1 Wellbore tubular handling torque multiplier |
| 05/10/2006 | CN1769642A Machine for drilling well in shallow stratum |
| 05/10/2006 | CN1769641A Transmission assembly |
| 05/09/2006 | US7040712 Shield tunneling method and shield tunneling machine |
| 05/09/2006 | CA2487218A1 Top drive assembly |
| 05/04/2006 | WO2005121493A3 Top drive |
| 05/03/2006 | CN1254353C Boring device and boring method |
| 05/02/2006 | US7036606 Quick-detach vehicle-mounted auger driver |
| 04/27/2006 | WO2006043878A1 Drill bushing |
| 04/27/2006 | CA2579306A1 Drill bushing |
| 04/26/2006 | CN2775278Y Common device for hydraulic system |
| 04/26/2006 | CN2775277Y Power head structure device |
| 04/25/2006 | US7032690 Apparatus and method for visually detecting wear to insert bowls, bushings, and spiders |
| 04/25/2006 | CA2143060C Soil solidification apparatus with a shear blade of adjustable length and rotation speed for creating a ribbed soil-cement pile |
| 04/18/2006 | US7028787 Tong for wellbore operations |
| 04/12/2006 | CN2771479Y Coal-mining drilling machine |
| 04/12/2006 | CN2771455Y Rotary table mechanism equipped with circle-arc tooth bevel gear pair in engineering drilling machine |
| 03/29/2006 | CN2767507Y Multifunctional excavator |
| 03/23/2006 | DE19882445B4 Verfahren zum Steuern einer Gesteinsbohrung A method for controlling a rock drilling |
| 03/08/2006 | EP1226334B1 Method and device of controlling a rock drilling machine |
| 03/01/2006 | CN1243903C Rock drilling machine |
| 02/22/2006 | CN2760209Y Rotary table powered directional drilling tool |
| 02/22/2006 | CN1738960A Mounts for blowout preventer bonnets |
| 02/16/2006 | US20060032638 Apparatus and methods of setting and retrieving casing with drilling latch and bottom hole assembly |
| 02/15/2006 | EP1274919B1 Top drive for casing connection |
| 02/15/2006 | CN2758792Y Detector buring machine |
| 02/14/2006 | US6997251 Method and apparatus for controlling the ascent and descent of pipe in a well bore |
| 02/09/2006 | US20060027375 Automatic false rotary |
| 02/08/2006 | CN2756801Y Petroleum drilling rig power driving machine |
| 02/08/2006 | CN1730895A Automatic boring device for hand-held drill |
| 02/07/2006 | US6994174 Washpipe assembly |
| 02/01/2006 | EP1620629A2 System and method using a continuously variable transmission to control one or more system components |
| 02/01/2006 | CN2755357Y Gear box of engineering driller |
| 02/01/2006 | CN2755355Y Gearbox of engineering drill with reversable conical gear pair with arch teeth |
| 01/26/2006 | US20060016625 Hydraulic drilling machine for working in a small space |
| 01/18/2006 | CN2752439Y Power-assisted coal petrography drilling machine |
| 01/18/2006 | CN2752421Y Multiple synchronous slip casting drilling pipe |
| 01/18/2006 | CN2752420Y Well-rig for superficial earth's surface |