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 3 - Rotary drilling
Patents for E21B 3 - Rotary drilling (4,061)
08/2010
08/18/2010CN201554382U Turning bar connecting device of drilling pile machine
08/18/2010CN201554365U Multifunctional dual-purpose machine for well-drilling and piling
08/18/2010CN201554364U Drilling equipment with double power heads
08/18/2010CN101806196A Compound rotary drilling rig drilling mechanism
08/18/2010CN101806193A Light-duty underground drill rig
08/18/2010CN101250977B Drilling unit head of deep sea drill core sampling drilling machine
08/12/2010WO2010089573A1 A downhole tubular connector
08/12/2010WO2010089572A1 A downhole tubular connector
08/12/2010US20100200299 Device for a top drive drilling machine for continuous circulation of drilling mud
08/12/2010US20100200258 Tool wrench assembly
08/11/2010CN201546629U Mast device and rotary excavating drilling machine comprising same
08/11/2010CN201546616U Screw drilling rig
08/11/2010CN201546615U Telescopic drilling tool of mixing pile machine
08/11/2010CN201546614U Deep well drilling speed reducer
08/11/2010CN201546613U Long spiral drilling machine
08/11/2010CN201546612U Mining linked all-hydraulic drill
08/11/2010CN201546611U Hand-held gear type wind and coal drilling rig
08/11/2010CN101802342A Stripper rubber with integral retracting retention member connection apparatus
08/11/2010CN101798904A Device for supplying concrete and gas into drill ribbon of drilling device when forming concrete borehole
08/11/2010CN101392629B Portable all-hydraulic core drilling rig
08/10/2010US7770668 Modular rotary drill head
08/05/2010US20100193247 Track and Sprocket Drive for Drilling
08/04/2010CN201539211U Double-rig drilling system
08/04/2010CN201539210U Skeleton type stator of screw drill tool and screw drill tool adopting skeleton type stator
08/04/2010CN101796259A Spring load seal assembly and well drilling equipment comprising same
08/04/2010CN101796258A Spring preloaded bearing assembly and well drilling equipment comprising same
08/03/2010US7766100 Tapered surface bearing assembly and well drilling equiment comprising same
07/2010
07/29/2010US20100187015 Bearing assembly system with integral lubricant distribution and well drilling equipment comprising same
07/29/2010US20100186946 Bearing assembly retaining apparatus and well drilling equipment comprising same
07/28/2010CN201535140U 一种机锁式钻杆及包括该钻杆的工程机械 A mechanism locks the drill pipe and drill pipe, including construction machinery
07/28/2010CN201535135U Automatic stepless variable drilling and workover top drive system
07/28/2010CN101787876A Rollover protection system of rotary drilling rig
07/28/2010CN101787853A Guide rail for drilling-production equipment and connection method thereof
07/27/2010US7762320 Heat exchanger system and method of use thereof and well drilling equipment comprising same
07/21/2010CN101781970A Steel wire rope guide device used for rotary drilling rig and rotary drilling rig
07/14/2010CN201526269U Rotary disc of engineering drill
07/14/2010CN201526268U Inner blowout preventer device
07/14/2010CN201526267U Top drive testing device
07/14/2010CN201526266U 10-meter deep hole drill drilling device with deviation prevention function
07/14/2010CN201526265U Engineering drill
07/14/2010CN201525725U Winch of engineering drill
07/14/2010CN101775960A Cast-in-situ cylinder pile rotary drilling rig
07/13/2010US7753137 Hand-held power tool
07/13/2010CA2596282C Wellbore circulation system
07/13/2010CA2419650C System for performing wellbore operations
07/06/2010US7748477 Boring system and method therefor
07/01/2010WO2010036564A3 Modular rotary drill head
06/2010
06/30/2010CN201517367U Vehicle-mounted hole boring machine
06/30/2010CN201517365U Screw drilling tool for coal mines
06/29/2010US7743853 Top drive drilling apparatus
06/23/2010EP2198107A1 Stripper rubber with integral retracting retention member connection apparatus
06/23/2010CN201513117U Rotary drilling rig used for cast-in-site cylindrical pile
06/23/2010CN201513115U High-low double-speed pressurizing system of rotary drilling rig
06/23/2010CN101748975A Fixing seat for rotary drilling rig and rotary drilling rig
06/23/2010CN101748973A Drill head for hammer drill
06/23/2010CN101748968A Turntable of rotary drilling rig and rotary drilling rig
06/23/2010CN101148971B Cutting mechanism of anchor bar drilling machine
06/16/2010CN101743375A Planetary gear set centering ring
06/16/2010CN101737009A Geometry steerable drilling system driven by liquid and gas phase drilling media rotary disc
06/16/2010CN101737002A Self-adapting locking feeding mechanism of rotary drilling rig
06/16/2010CN101737001A Novel wall surface drilling machine oil supplying sleeve
06/10/2010US20100139986 Agitator for a Drill and Related Methods
06/10/2010US20100139985 Vibratory drill head mounting and rotation coupling system
06/10/2010US20100139984 Rotary drive for applying rotary torque to a shaft to be axially vibrated
06/09/2010EP2193250A1 Spring load seal assembly and well drilling equipment comprising same
06/09/2010CN201502317U Rotating disk positioning mechanism for drill
06/09/2010CN201502316U Well drilling machine
06/09/2010CN201502315U Jet drill power head feeding device
06/09/2010CN101725589A Hydraulic system and rotary drilling rig comprising same
06/09/2010CN101723274A Main winch retracting and stretching control system of rotary drilling rig and rotary drilling rig
06/02/2010CN201496495U Split drilling well chain combined transmission case
06/02/2010CN201495984U Support oil cylinder for long spiral drilling machine
06/02/2010CN201495982U Performance testing system of top driving drilling unit
06/02/2010CN101718166A Translational power head of all-hydraulic core drilling machine
06/02/2010CN101295424B Alarming method and device for preventing drilling rod-dropping accident of rotary digging drill rig
06/01/2010US7726416 Bearing assembly retaining apparatus and well drilling equipment comprising same
05/2010
05/26/2010CN201486578U Roof bolter
05/26/2010CN201486467U Fully hydraulic top-drive truck-mounted drilling rig
05/26/2010CN201486463U Drilling machine power head with buffer mechanism
05/26/2010CN201486462U Inverted flux control hydraulic system of rotary drilling rig and rotary drilling rig employing same
05/26/2010CN101713278A Drilling pouring pile hole formation one-pile double-machine construction method
05/25/2010CA2539319C Automatic false rotary
05/20/2010WO2010037108A3 Electrical control for a downhole system
05/20/2010WO2009090421A3 Method and apparatus for drilling auxiliary holes
05/19/2010CN201475490U Rotating transfer case and trenchless directional pipeline drilling laying device thereof
05/19/2010CN101709620A Long screw drill and power head and drill rod thereof
05/18/2010CA2517990C Methods and apparatus for handling and drilling with tubulars or casing
05/14/2010WO2010009826A4 Earth auger device
05/12/2010CN201461807U Closed type oil cylinder of brake clearance of hydraulic grease injection adjusting brake calipers
05/12/2010CN201460731U Directional rotary steering drilling tool
05/12/2010CN201460717U Speed regulating device for downhole drill for surface mine
05/12/2010CN201460713U Novel anti-dropping transmission shaft assembly
05/12/2010CN201460712U Multi-head drill rig for exploration
05/12/2010CN201460711U Top and side dual-purpose pneumatic jumbolter
05/12/2010CN201460710U Full-hydraulic geological drilling rig
05/12/2010CN101705786A Pot hole drilling machine carried on vehicle
05/12/2010CN101705785A Mining linkage all-hydraulic drilling machine
05/12/2010CN101328785B Multi-electric machine power head
05/11/2010US7712545 Telescopic feed beam for rock drill
05/11/2010US7712523 Top drive casing system
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