| Patents for E21B 15 - Supports for the drilling machine, e.g. derricks or masts (4,619) |
|---|
| 11/29/2006 | CN1869395A Automatic hole drilling apparatus for hand water drill |
| 11/23/2006 | US20060260828 Active rotational balancing system for orbital sanders |
| 11/19/2006 | CA2547285A1 Coiled tubing drilling rig |
| 11/15/2006 | CN2837491Y Drill tower chute device |
| 11/09/2006 | WO2005021920B1 Downhole tubular splitter assembly and method |
| 11/01/2006 | CN2833088Y Multi-direction high-pressure rotary-jetting drilling device |
| 10/19/2006 | WO2006110040A1 Drilling- or service rig |
| 10/19/2006 | WO2005110020A3 Apparatus and method for modified horizontal directional drilling assembly |
| 10/18/2006 | CN2828300Y Drilling rig base |
| 10/18/2006 | CN2828299Y Drilling rig base capable of quickly dismounted and moving |
| 10/18/2006 | CN1280518C Building machinery |
| 10/18/2006 | CN1280515C Hole drilling equipment and method |
| 10/11/2006 | CN2825919Y Guy rope locking device |
| 10/11/2006 | CN2825918Y Improved traveling block for self-lifting type upright derrick |
| 10/10/2006 | CA2225050C Arrangement for a telescope feeder of a rock-drilling machine |
| 09/27/2006 | CN2821128Y Drilling machine derrick mounted on ground |
| 09/20/2006 | CN2818771Y Petroleum production safeguarding system under water |
| 09/20/2006 | CN2818564Y Multifunctional electric cyclone digging driller |
| 09/19/2006 | US7108057 Apparatus for controlling the ascent and descent of pipe in a well bore |
| 09/14/2006 | WO2006096121A1 Sensor assembly in a gearbox for positioning |
| 09/14/2006 | WO2006095227A1 Damping device for an output shaft in a gearbox |
| 09/14/2006 | CA2599289A1 Damping device for an output shaft in a gearbox |
| 09/13/2006 | CN2816326Y Novel driller rear-table |
| 09/13/2006 | CN2816325Y Horizontal support for track type rock driller |
| 09/13/2006 | CN2816322Y Apparatus for boring construction |
| 09/07/2006 | US20060196686 Universal game download system for legacy gaming machines |
| 09/05/2006 | US7100709 Feed table pivot pin constraining device |
| 08/30/2006 | EP1696100A1 Rotatable support for inclinable masts of drilling machines |
| 08/23/2006 | EP0980461B1 Directional drilling apparatus |
| 08/22/2006 | US7093668 Power tools |
| 08/17/2006 | WO2005021920A3 Downhole tubular splitter assembly and method |
| 08/16/2006 | CN2806742Y Link mechanism of rotary drilling machine for supporting lower gin pole |
| 08/16/2006 | CN1818398A Force shift controlling mechanism for energy-storing well reparing apparatus and operation thereof |
| 08/09/2006 | CN2804360Y Double deck plat form with telescopic structure |
| 08/02/2006 | EP1601854B1 Telescopic feed beam for rock drill and method of measuring rock drill travel |
| 08/01/2006 | US7083004 Cantilevered multi purpose tower and method for installing drilling equipment |
| 08/01/2006 | CA2411290C Auger/vehicle interface jig |
| 07/25/2006 | CA2198235C Arrangement for controlling boom for rock drilling unit |
| 07/20/2006 | WO2006075910A1 Anchoring device and method for fixation of a launching unit for highwall mining |
| 07/20/2006 | US20060157275 Method and system for building modular structures from which oil and gas wells are drilled |
| 07/18/2006 | US7077209 Mast for handling a coiled tubing injector |
| 07/12/2006 | CN2795435Y Irregular quadrangle drilling tower frame on botton rectangular top |
| 07/12/2006 | CN2795434Y Variable amplitude link rod mechanism of rotary digging and drilling machine movable arm |
| 07/11/2006 | US7073592 Jacking frame for coiled tubing operations |
| 07/05/2006 | CN2793294Y Drill tower moving apparatus of petroleum drilling platform |
| 07/05/2006 | CN2793293Y Stand with cylinder support |
| 06/28/2006 | CN2791235Y Rotary digger pole-folding-back and fixing mechanism |
| 06/27/2006 | US7066267 Downhole tubular splitter assembly and method |
| 06/21/2006 | EP1672165A1 Apparatus for construction works |
| 06/21/2006 | EP1507952B1 Underwater drilling rig |
| 06/21/2006 | CN2789400Y Rotary digging driller mast |
| 06/21/2006 | CN1789653A Construction device comprising a mast having a pivotable deflecting device |
| 06/14/2006 | CN1786408A Construction apparatus |
| 06/07/2006 | EP1451438B1 Drilling mast with movable and fixed unscrewing vice |
| 06/06/2006 | CA2161573C Drill rig with carrier/mast safety interlock |
| 05/24/2006 | EP1266124B1 Arrangement for determining position of unmanned mining vehicles |
| 05/24/2006 | CN1777733A Telescopic feed beam for rock drill and method of measuring rock drill travel |
| 05/22/2006 | CA2491273A1 System and method of installing and maintaining an offshore exploration and production system having an adjustable buoyancy chamber |
| 05/18/2006 | WO2006014417A3 Coiled tubing with dual member drill string |
| 05/18/2006 | US20060102387 Internal riser rotating control head |
| 05/17/2006 | EP1657400A1 Construction apparatus |
| 05/17/2006 | EP1611311A4 System and method for treating drilling mud in oil and gas well drilling applications |
| 05/17/2006 | EP1274917B1 Rock drilling rig |
| 05/17/2006 | CN2780906Y Auxiliary device for moving and mounting derrick |
| 05/17/2006 | CN1773074A Construction apparatus |
| 05/17/2006 | CN1773073A Construction apparatus |
| 05/16/2006 | CA2215505C An arrangement in a feed beam of a rock drill |
| 05/10/2006 | EP1655450A1 Drilling apparatus |
| 05/10/2006 | EP1295010B1 Method of opening joints between drilling components, and rock drill |
| 05/04/2006 | WO2006047379A2 Coke drum automated drill stem guide and cover system |
| 05/03/2006 | EP1307631B1 Base for a subsea installation and application thereof |
| 05/02/2006 | CA2198236C Arrangement for mounting swing cylinders in boom for rock drilling unit |
| 04/27/2006 | WO2006045072A2 Power tool anti-kickback system with rotational rate sensor |
| 04/27/2006 | US20060086539 Coke drum automated drill stem guide and cover system |
| 04/26/2006 | EP1552103A4 Drill head steering |
| 04/26/2006 | CN2775280Y Mast connection mechanism for rotary digging rig |
| 04/25/2006 | US7032978 Crushing method using large boreholes in underwater rock |
| 04/25/2006 | US7032684 Method of opening joints between drilling components, and rock drill |
| 04/20/2006 | WO2006041343A1 Rock drilling rig, service platform connected to a rock drilling rig and a roof for a service platform |
| 04/20/2006 | US20060081386 Power tool anti-kickback system with rotational rate sensor |
| 04/20/2006 | CA2569323A1 Rock drilling rig, service platform connected to a rock drilling rig and a roof for a service platform |
| 04/19/2006 | CN2773301Y Pumping and well-repairing operation vehicle in oil-field with separated rig |
| 04/13/2006 | WO2006038851A1 Sleeve arrangement |
| 04/13/2006 | WO2006038850A1 Housing arrangement |
| 04/13/2006 | WO2005120153A3 Method and system for deep sea drilling |
| 04/13/2006 | CA2576897A1 Sleeve arrangement |
| 04/13/2006 | CA2576893A1 Housing arrangement |
| 04/12/2006 | CN2771458Y Multi-purpose caving coal drilling machine |
| 04/05/2006 | CN2769489Y Large operating space telescopic pole |
| 04/05/2006 | CN1249325C Deep-sea multiple-bit incrusting and coring rig |
| 04/04/2006 | US7021402 Method for using a multipurpose unit with multipurpose tower and a surface blow out preventer |
| 03/30/2006 | US20060065415 Active rotational balancing system for orbital sanders |
| 03/29/2006 | EP1246995B1 Modular light weight drilling rig |
| 03/22/2006 | CN1749526A Drilling rig with a tool cartridge |
| 03/08/2006 | EP1632638A1 Hydraulic drilling apparatus for confined space work |
| 03/08/2006 | EP1330589B1 Rock drilling machine |
| 03/08/2006 | EP1123454B1 System, apparatus, and method for installing control lines in a well |
| 03/08/2006 | CN2763464Y Steel derrick adopting high interchangeability joint board |
| 03/08/2006 | CN2763463Y Derrick and base linkage hydraulic lifting/lowering device for deep well drilling machine |
| 03/01/2006 | EP1141511B1 Method for correcting positioning errors in rock drilling, and a rock drilling equipment |