| Patents for E21B 15 - Supports for the drilling machine, e.g. derricks or masts (4,619) |
|---|
| 01/30/2008 | CN201013239Y Drill mobile guide rail |
| 01/30/2008 | CN201013237Y Portable hilly land drilling rig |
| 01/30/2008 | CN201013229Y Ground anchor bearing hydraulic drilling working rig |
| 01/30/2008 | CN201013228Y Fully-hydraulic gas drainage multi-use drill |
| 01/30/2008 | CN201013227Y Tower base rock hole anchor bar driller |
| 01/30/2008 | CN201013019Y Pile machine with drilling function |
| 01/30/2008 | CN101116041A Sensor assembly in a gearbox for positioning |
| 01/29/2008 | CA2533836C Method of ensuring that well tubing was properly stretched |
| 01/23/2008 | EP1881151A1 Drilling unit |
| 01/23/2008 | CN101109272A Application of high-tensile structural steel in design and manufacture of oil-well rig headframe |
| 01/23/2008 | CN101109271A Application of low-temperature structural steel in design and manufacture of oil-well rig headframe |
| 01/22/2008 | US7320374 Wellbore top drive systems |
| 01/16/2008 | CN101105114A Vertical axis type drilling machine inclined hole boring machine |
| 01/15/2008 | US7318491 Apparatus and method for modified horizontal directional drilling assembly |
| 01/15/2008 | CA2344034C Drilling machine and method for sinking a well |
| 01/15/2008 | CA2238998C Remotely accessible mobile repair unit for wells |
| 01/10/2008 | US20080006445 Method and apparatus for movement of drilling equipment between adjacent locations |
| 01/09/2008 | CN201003378Y Rotarily lifting type headframe and base |
| 01/09/2008 | CN201003377Y K type vertical lifting type headframe U-shaped locking device |
| 01/09/2008 | CN201003376Y Drill headframe hydraulic lifting type propeller strut |
| 01/09/2008 | CN201003372Y Modular drilling machine |
| 01/09/2008 | CN100360763C Telescopic feed beam for rock drill and method of measuring rock drill travel |
| 01/09/2008 | CN100360762C Directional drilling apparatus |
| 12/26/2007 | EP1869281A1 Drilling- or service rig |
| 12/19/2007 | CN200992954Y Glass fiber reinforced plastic composite rig foundation |
| 12/19/2007 | CN200992953Y Self-elevation folding derrick |
| 12/18/2007 | US7308953 Mobile drilling rig |
| 12/12/2007 | CN200989168Y Gas pumping and discharging driller drilling azimuth on-line regulator |
| 12/12/2007 | CN200989167Y Derrick and borehole center regulating centring device |
| 12/12/2007 | CN101086201A Self-elevating drilling rig locking device |
| 12/12/2007 | CN101086200A Drill platform power management system |
| 12/11/2007 | US7306055 Automatic method for installing mobile drilling rig at a drilling site |
| 12/06/2007 | CA2549664A1 Articulated mast for a coiled tubing rig |
| 12/05/2007 | CN101082266A Joint method for oil-well rig boring tower |
| 12/05/2007 | CN101082265A Working machine, especially a drilling rig |
| 12/04/2007 | CA2354692C Method and rock drilling apparatus for controlling rock drilling |
| 11/28/2007 | CN200982161Y Drilling tower capable of being supported on driller |
| 11/28/2007 | CN200982160Y Hydraulic lifting synchronous controlling device for drilling rig headframe and base |
| 11/28/2007 | CN100351490C Omni-directional drilling machine |
| 11/21/2007 | EP1856584A1 Sensor assembly in a gearbox for positioning |
| 11/21/2007 | EP1856369A1 Damping device for an output shaft in a gearbox |
| 11/21/2007 | CN100350129C Crushing method using large boreholes in underwater rock |
| 11/20/2007 | CA2415057C Displacement and support device for a portable power tool |
| 11/15/2007 | WO2007129899A1 Seabed rig with coiled tubing |
| 11/15/2007 | US20070261868 Magnetic torque-limiting device and method |
| 11/14/2007 | CN200975216Y Integral semi-pull-hang transporting type drilling machine foundation |
| 11/14/2007 | CN200975211Y Telescopic thruster for digging drill carriage |
| 11/13/2007 | CA2414764C Guide support for rig mounted continuous feed injection unit |
| 11/13/2007 | CA2279140C Access and evacuation apparatus with articulated arm |
| 11/07/2007 | CN200971753Y Adjustable double-column support |
| 11/06/2007 | US7290621 Integrated mast and top drive for drilling rig |
| 10/31/2007 | CN200968180Y Falling proof safety derrick apparatus |
| 10/31/2007 | CN200968176Y Drilling machine for piling |
| 10/31/2007 | CN200968175Y Well-repairing machine with wind loading stabilizing device |
| 10/31/2007 | CN101063400A Drilling device for producing drilling column in soil and method thereof |
| 10/31/2007 | CN101063399A Drilling implement for erecting a drilling pillar in the ground and method thereof |
| 10/27/2007 | CA2561243A1 Sub-sea well intervention vessel and method |
| 10/24/2007 | CN200964799Y Rock-cutting tunnelling positioner |
| 10/24/2007 | CN200964798Y Multiple pivot height-adjustable portable drilling machine base |
| 10/24/2007 | CN200964790Y Hydraulic minisize drilling machine |
| 10/17/2007 | EP1845232A1 Improved drilling machine |
| 10/17/2007 | EP1472431B1 Method and system for building modular structures from which oil and gas wells are drilled |
| 10/10/2007 | CN200958376Y Guide mechanism of drilling rig |
| 10/04/2007 | US20070227752 Telescopic Feed Beam for Rock Drill |
| 10/04/2007 | US20070227310 Hand power tool |
| 10/03/2007 | CN200955352Y Gas-exhaust drill power-head on-line adjustable guide supporting device |
| 10/03/2007 | CA2582604A1 Coiled tubing rig |
| 10/02/2007 | CA2280403C Set-up process of a development facility |
| 10/02/2007 | CA2280399C Offshore accumulation development facility and riser pipe set-up process |
| 09/27/2007 | WO2007108698A1 Tool handling device in a drilling rig situated on the seabed |
| 09/27/2007 | WO2007108697A1 Sealed pipe coupling unit for a drilling rig device situated on the seabed |
| 09/27/2007 | WO2007108696A1 Drilling rig situated on the seabed, including a separation device |
| 09/27/2007 | DE202006020044U1 Hochdruckvorrichtung High-pressure device |
| 09/27/2007 | CA2644919A1 Separation device for material from a drilling rig situated on the seabed |
| 09/26/2007 | CN200952355Y Derrick tightening rope regulator |
| 09/26/2007 | CN200952354Y Petroleum workover rig drill block |
| 09/26/2007 | CN200952350Y Gas drainage driller unit head adjustable guiding supporting device |
| 09/26/2007 | CN101044293A Modular drill system requiring limited field assembly |
| 09/19/2007 | CN200949430Y Prize-installation vehicle mounted type hydraulic energy storage petroleum well-repairing machine |
| 09/19/2007 | CN200949420Y Portable well-digging machine |
| 09/19/2007 | CN101040098A Housing arrangement |
| 09/13/2007 | WO2007103707A2 Systems and methods for using an umbilical |
| 09/12/2007 | CN101035961A Sleeve arrangement |
| 09/11/2007 | US7267182 Rock drilling rig and rock breaking machine |
| 09/07/2007 | WO2007100287A1 Method and device for automatic calibration of a rock drilling joint and rock drilling rig comprising such a device |
| 09/07/2007 | WO2007100284A1 Method and device for controlling the drilling direction of a rock drilling rig |
| 09/07/2007 | CA2642614A1 Method and device for controlling the drilling direction of a rock-drilling rig |
| 09/05/2007 | CN200943443Y Mast leveling device of rotary digging drill |
| 09/05/2007 | CN200943441Y Down-hole drill |
| 09/05/2007 | CN101029489A Construction equipment and method for preparing said equipment for transportation |
| 08/29/2007 | EP1390585A4 Multipurpose unit with multipurpose tower and method for tendering with a semisubmersible |
| 08/23/2007 | WO2007093787A1 Big assembly with movable rig floor units |
| 08/23/2007 | US20070196180 Drilling Rig Placed on the Sea Bed and Equipped for Drilling of Oil and Gas Wells |
| 08/22/2007 | EP1436487B1 Rock drilling apparatus and rock breaking machine |
| 08/22/2007 | EP1149227B1 Method and rock drilling apparatus for controlling rock drilling |
| 08/22/2007 | CN2937443Y Truck-mounted drill rig without anchor block fixing derrick rope |
| 08/22/2007 | CN2937442Y Movable full hydraulic multifunction driving drill mounting |
| 08/16/2007 | WO2007091939A1 Upper beam for a telescopic feeder, telescopic feeder and drilling device for rock drilling |
| 08/16/2007 | CA2638009A1 Upper beam for a telescopic feeder, telescopic feeder and drilling device for rock drilling |
| 08/15/2007 | CN101016827A 18 m hydraulic pressure rise and fall retractable drill tower |