Patents
Sitemap › E21 - Earth or rock drilling; Mining › E21B - Earth or rock drilling; Obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells › E21B 15 - Supports for the drilling machine, e.g. derricks or masts
Patents for E21B 15 - Supports for the drilling machine, e.g. derricks or masts (4,619)
10/2012
10/23/2012US8294399 Motor controller and electric tool having the same
10/17/2012EP2510181A2 Multi-function multi- hole drilling rig
10/16/2012US8286723 Power screwdriver having rotary input control
10/11/2012WO2012138912A2 Offshore top tensioned riser buoyancy can system and methods of field development
10/11/2012US20120255736 Offshore top tensioned riser buoyancy can system and methods of field development
10/11/2012CA2773347A1 Polyamide-sheathed structural steel tubes for offshore structures
10/10/2012CN202483466U Rotary drilling rig and mast device thereof
10/10/2012CN202483465U Luffing mechanism and rotary drilling machine
10/10/2012CN202483464U Rotary drilling rig
10/10/2012CN202483463U Chassis of rotary drilling rig
10/10/2012CN202483439U Counter-weight self-assembly and self-disassembly device for rotary drilling rig
10/10/2012CN202483437U Trestle type pneumatic drilling machine
10/10/2012CN102720437A Protrusion self-positioning device for nested headframe
10/10/2012CN102720436A Unpowered lifting method of slingshot-type bases
10/10/2012CN102720435A Drilling platform
10/10/2012CN102720428A Rotary drilling rig and method for loading same
10/10/2012CN101929157B Construction apparatus for foundation construction
10/10/2012CN101881137B Method for fixing gangue dumping platform in process of using permanent derrick to construct well
10/10/2012CN101063399B Drilling implement for erecting a drilling pillar in the ground and method thereof
10/04/2012US20120247836 Mining machine with booms providing enhanced rib access
10/03/2012CN202467739U Snubbing work-over rig
10/03/2012CN202467680U Mounting rack assembly for down-the-hole drill
10/03/2012CN202467679U Boosting rack for downhole drill
10/03/2012CN202467678U Assorted unit integration dragging device of drilling and repairing machine
10/03/2012CN202467677U Lifting rotary mechanism for coal mine gallery drilling machine
10/03/2012CN202467676U rotary drilling rig
10/03/2012CN202467675U Drilling rig support rod for rotary spraying soft ground reinforcing machine and installation device of drilling rig support rod
10/03/2012CN202467650U Vehicle-mounted coal-bed methane drilling machine
10/03/2012CN202467649U Telescopic support leg and vehicle-mounted coal seam pneumatic drilling machine using telescopic support legs
10/03/2012CN202467647U Deep hole drill carriage capable of rotating at angle of 90 DEG for coal mine
10/03/2012CN202467646U Spiral piling machine
10/03/2012CN202467635U Rotary drilling rig
10/03/2012CN202463927U Support mechanism of hydraulic drilling machine
10/03/2012CN102704861A Novel movable positioning device for drilling machine
10/03/2012CN102704860A Split crossbeam mechanism for horizontal directional drilling machine
10/03/2012CN102704859A 滑轮机构和旋挖钻机 Pulley mechanism and rotary drilling rig
10/03/2012CN102704839A Hanging carrying type integral hydraulic rock drilling machine
10/03/2012CN102704837A Shallow hole drilling machine
10/03/2012CN102704835A Detachable all-hydraulic core drilling machine structure
10/03/2012CN102704832A Rotary drilling rig
09/2012
09/29/2012CA2772755A1 Mobile drilling system and a methodology for installation of the system
09/26/2012CN202451183U Operating mechanism of 180-DEG bolting jumbo for coal mine
09/26/2012CN202451068U Mast of rotary drilling rig and rotary drilling rig with same
09/26/2012CN202451067U Work mechanism for 90-degreee deep hole drill carriage for coal mine
09/26/2012CN202451066U Mast stretching device and masts of rotary drilling rig
09/26/2012CN202451057U Special slewing drilling machine for water floating platform
09/26/2012CN202451055U Drilling locating device for down-the-hole drill
09/26/2012CN102691483A Rotary drilling rig and pulley yoke thereof
09/26/2012CN102691479A Slipping luffing mechanism for crossbeam of horizontal directional drilling machine
09/26/2012CN102691478A Tower erection device for rock core drilling machine
09/19/2012EP2500259A1 Method for removing a hydrocarbon production platform from sea
09/19/2012CN202441269U Offshore drilling tower
09/19/2012CN202440815U Forming device for long-spiral filling pile extruded into rock
09/19/2012CN102678107A Two-position rotation system of combustion arm
09/19/2012CN102678063A Installation method of oil drilling derrick
09/19/2012CN102678062A Support mechanism and rotary drill rig
09/19/2012CN102678061A Columnar combustion arm guardrail
09/19/2012CN102678047A Drilling machine and drill arm mechanism thereof
09/19/2012CN102678046A Mining drill carriage
09/19/2012CN102678041A Movable arm limit device of rotary drilling rig, rotary drilling rig and protection method of rotary drilling rig
09/19/2012CN102674176A Vertical lifting system of burner boom
09/13/2012WO2012121773A1 A cantilever system and method of use
09/13/2012CA2828749A1 A cantilever system and method of use
09/12/2012CN202431214U Drilling machine
09/12/2012CN202431213U Movable guardrail used for module drilling rig
09/12/2012CN202431212U Drilling machine base
09/12/2012CN202431186U Drilling machine and drill arm mechanism thereof
09/12/2012CN102661127A Installing structure of cathead, and rotary drilling rig
09/12/2012CN102661126A Multifunctional maintenance service device for petrol drilling machine
09/07/2012WO2012082779A3 Method, system and apparatus for deployment of umbilicals in subsea well operations
09/05/2012CN202417326U Fixing structure of hydraulic drilling rig under coal mine well
09/05/2012CN202417325U Fixed pedestal of anti-falling device for mounting and dismounting of derrick
09/05/2012CN202417324U Pressurized hydraulic control rotary drilling device
09/05/2012CN202417323U Turntable device and rotary drilling rig
09/05/2012CN202417322U Mast of rotary drilling rig
09/05/2012CN202417321U Pulley frame and drilling machine with pulley frame
09/05/2012CN202417320U Follow-up bracket of drilling rig
09/05/2012CN202417308U Dual-functional rotary digging machine
09/05/2012CN202417302U Vibrating drilling type impact digging drilling machine
09/05/2012CN202416811U Stand for electric drill
09/05/2012CN202416404U Excavator swing arm structure for increasing feed pressing force of drilling machine
09/05/2012CN102654038A Cathead and rotary drilling rig
09/05/2012CN102654033A Electric drill support for roof drilling
09/05/2012CN102654021A Tunnel drilling machine
08/2012
08/29/2012CN202401984U Mast support assembly
08/29/2012CN202401983U Rotary drilling rig
08/29/2012CN202401982U Rotary drilling rig with luffing mechanism
08/29/2012CN202401981U Drilling machine
08/29/2012CN202401980U Mast and long spiral drilling machine with same
08/29/2012CN202401979U Goose head structure used for drilling machine and long spiral drilling machine using same
08/29/2012CN202401978U Deep hole drilling machine
08/29/2012CN202401977U Drilling machine
08/29/2012CN202401966U Rotary drilling rig
08/29/2012CN202401965U Vehicle-mounted long auger
08/29/2012CN202401963U Connection structure between base plate and pile frame and drilling machine using connection structure
08/29/2012CN202401962U Top drive support
08/24/2012CA2732565A1 Auto-centering structural bearing
08/23/2012WO2012109759A1 Low headroom confined space geoexchange drilling system and method
08/23/2012US20120211281 Low headroom confined space geoexchange drilling system and method
08/22/2012CN202391349U Mast mechanism and drilling machine
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