| Patents for E21B 7 - Special methods or apparatus for drilling (22,064) |
|---|
| 04/15/2009 | CN201221314Y Light vehicle-mounted drill |
| 04/15/2009 | CN201221313Y Mining outburst prevention fully-mechanized mining face light emulsifiable solution drill |
| 04/15/2009 | CN201221312Y Combined project drill |
| 04/15/2009 | CN101408094A Combined sand-washing well repairing machine |
| 04/15/2009 | CN101408093A Diameter-variable stabilizer for gas drilling |
| 04/15/2009 | CN101408090A Indexing for coiled tubing drilling rig |
| 04/15/2009 | CN101408089A Construction method of buried depth monitoring instrument poreforming and anchorage cable poreforming under unfavorable geological condition |
| 04/14/2009 | US7516802 Assembly and method for determining thermal properties of a formation and forming a liner |
| 04/14/2009 | US7516794 Pipe separator for the separation of fluids, particularly oil, gas and water |
| 04/14/2009 | CA2497617C Method and apparatus for locating and re-entering one or more horizontal wells using whipstocks |
| 04/12/2009 | CA2640150A1 System and method for fracturing while drilling |
| 04/11/2009 | CA2640823A1 Self sharpening cutting structure for expandable earth boring apparatus using impregnated and matrix materials |
| 04/11/2009 | CA2639847A1 Systems and methods for guiding the drilling of a horizontal well |
| 04/09/2009 | WO2008151128A4 Dual density mud return system |
| 04/09/2009 | US20090090560 Hole Boring Tool |
| 04/09/2009 | US20090090557 Injection System And Method |
| 04/09/2009 | US20090090555 Automated directional drilling apparatus and methods |
| 04/09/2009 | US20090090526 Mobile basket for consolidation work on walls |
| 04/09/2009 | US20090090508 Liner Drilling Method and Liner Hanger |
| 04/09/2009 | DE102007045979A1 Drilling device for inserting sensor into ground, has valve body for allowing withdrawal of drilling fluid from outlet opening in position and allowing withdrawal of drilling fluid from another outlet opening in another position |
| 04/09/2009 | DE102006043772B4 Verfahren und Vorrichtung zum Ersetzen erdverlegter Altleitungen Method and apparatus for replacing underground old pipes |
| 04/08/2009 | EP2044286A1 Device for connecting a section of a pipe run to a pulling element |
| 04/08/2009 | EP2044285A1 A method and a device for directional control of a rock drilling machine |
| 04/08/2009 | EP1802844B1 Method for laying pipes without digging trenches |
| 04/08/2009 | CN201218059Y High pressure nozzle of radial horizontal well |
| 04/08/2009 | CN201218058Y Bendable casing of tooth embedding type screw drill |
| 04/08/2009 | CN201218057Y Drilling apparatus |
| 04/08/2009 | CN201218056Y Radial horizontal well direction converter |
| 04/08/2009 | CN201218055Y Explosive anti-floating apparatus for desert drill rig |
| 04/08/2009 | CN201218054Y Full-pneumatic guide rail type pressure-relief drill rig |
| 04/08/2009 | CN201218053Y Pressure-discharging drill rig with remote control |
| 04/08/2009 | CN101403313A Use method for extending soft high-pressure rubber hose into drill hole sheath |
| 04/08/2009 | CN101403281A Tail pipe well drilling and well completion technique |
| 04/08/2009 | CN101403280A Six-stage branch well bifurcation production and bifurcation system tool |
| 04/08/2009 | CN101403279A Well bottom booster pump and its supercharging method |
| 04/07/2009 | US7513318 Steerable underreamer/stabilizer assembly and method |
| 04/07/2009 | US7513312 Drilling rig apparatus and downhole tool assembly system and method |
| 04/07/2009 | US7513310 Method and arrangement for performing drilling operations |
| 04/07/2009 | US7513302 Apparatus for orienting a mule shoe to enter a previously-installed tubular in a lateral and method of use |
| 04/07/2009 | US7513300 Casing running and drilling system |
| 04/02/2009 | WO2009040569A2 A mobile land rig |
| 04/02/2009 | WO2009018448A3 Return line mounted pump for riserless mud return system |
| 04/02/2009 | WO2005062830A3 System, method and apparatus for petrophysical and geophysical measurements at the drilling bit |
| 04/02/2009 | US20090084604 Compressible objects having partial foam interiors combined with a drilling fluid to form a variable density drilling mud |
| 04/02/2009 | US20090084558 Electrically powered well servicing rigs |
| 04/02/2009 | DE102007043621A1 Method for implementing drilling, involves carrying out drilling in axial direction through drilling channel provided in partition wall, where over-pressure area for drilling is adjoined |
| 04/02/2009 | CA2700385A1 A mobile land rig |
| 04/01/2009 | EP2041389A1 Resonance enhanced drilling: method and apparatus |
| 04/01/2009 | EP1668219B1 Steerable bit assembly and methods |
| 04/01/2009 | CN201214983Y Hydraulic booster expansion system for liner tube hanging on branch well base |
| 04/01/2009 | CN101397888A Fish bone shaped lateral well drilling and completion technique |
| 04/01/2009 | CN100473803C Method and system for accessing subterranean zones from limited surface area |
| 03/31/2009 | US7510030 Elongated cross coil assembly for use in borehole location determination |
| 03/31/2009 | US7510029 System for tracking and maintaining an on-grade horizontal borehole |
| 03/31/2009 | US7510027 Borehole drilling control system, method and apparatus |
| 03/31/2009 | US7510025 Boring machine |
| 03/26/2009 | WO2009039453A2 Directional drilling control |
| 03/26/2009 | WO2009039448A2 Automated directional drilling apparatus and methods |
| 03/26/2009 | WO2008140760A4 Impact excavation system and method with particle separation |
| 03/26/2009 | US20090080815 Light metal feed beam for use on a drill rig |
| 03/26/2009 | US20090078466 Apparatus and Method for Driving Casing or Conductor Pipe |
| 03/26/2009 | US20090078465 Steerable drill bit arrangement |
| 03/26/2009 | US20090078464 Microtunneling method |
| 03/26/2009 | US20090078462 Directional Drilling Control |
| 03/26/2009 | US20090078461 Drilling subsurface wellbores with cutting structures |
| 03/26/2009 | US20090078438 Arrangement for Positioning Drilling Unit |
| 03/26/2009 | CA2698743A1 Automated directional drilling apparatus and methods |
| 03/25/2009 | EP2039875A1 Drilling device, in particular deep drilling device |
| 03/25/2009 | CN101395338A System and method for producing fluids from a subterranean formation |
| 03/25/2009 | CN101392632A Three-cylinder airleg matched with rock drill |
| 03/25/2009 | CN101392630A Drill and method for operating a drill |
| 03/25/2009 | CN101392529A Bored pile control method, control system and drill using the control system |
| 03/25/2009 | CN100472027C Branched selective reentry method and apparatus |
| 03/24/2009 | US7507692 Methods for reducing circulation loss during drilling operations |
| 03/24/2009 | US7506704 Downhole swivel joint |
| 03/24/2009 | US7506701 Drill bit assembly for directional drilling |
| 03/24/2009 | US7506700 Method for steering mud motors and retrieving measurement while drilling devices |
| 03/24/2009 | US7506699 Directional drilling tool |
| 03/24/2009 | US7506696 Borehole drilling control system, method and apparatus |
| 03/24/2009 | CA2432217C Flightless rock auger for use with pressure drills with quick attachment and method of use |
| 03/19/2009 | WO2006110461A3 Drilling with casing |
| 03/19/2009 | US20090071720 Mobile Land Drilling Rig and Method of Installation |
| 03/19/2009 | US20090071719 Boring Tool Tracking Fundamentally Based on Drill String Length, Pitch, and Roll |
| 03/19/2009 | US20090071714 Method and apparatus for soil sampling |
| 03/19/2009 | US20090071713 System for Rapidly Boring Through Materials |
| 03/19/2009 | US20090071674 Drilling implement and method for operating a drilling implement |
| 03/18/2009 | EP2035645A1 Microtunnelling system and apparatus |
| 03/18/2009 | CN201209459Y Abnormal protrusion mine coal road digging anti- protrusion jumbo loader |
| 03/18/2009 | CN201209403Y Platform special for laying synchronization radiating light source storage ring anchor bolt |
| 03/18/2009 | CN201209250Y Bidirectional stirring pile machine |
| 03/18/2009 | CN101387195A Reverse-branch Hole gravity oil drainage extraction technology |
| 03/17/2009 | US7503408 Steering assembly and steering component |
| 03/17/2009 | US7503405 Rotary valve for steering a drill string |
| 03/17/2009 | US7503404 Methods of well stimulation during drilling operations |
| 03/17/2009 | US7503403 Method and apparatus for enhancing directional accuracy and control using bottomhole assembly bending measurements |
| 03/17/2009 | US7503397 Apparatus and methods of setting and retrieving casing with drilling latch and bottom hole assembly |
| 03/12/2009 | WO2009032517A1 Drill in sand control liner |
| 03/12/2009 | WO2009032468A1 Method and apparatus for rotary mining |
| 03/12/2009 | WO2009032367A2 Directional drilling control using modulated bit rotation |
| 03/12/2009 | WO2009031963A1 A device preferably for performing of a drilling in earth-layer and rock |