Patents for E21B 3 - Rotary drilling (4,061)
10/2013
10/23/2013CN203248599U Counterweight self-detached structure of rotary drilling rig and rotary drilling rig
10/23/2013CN203248072U Self-walking shale gas drilling machine
10/23/2013CN203248064U Pneumatic drilling machine propelling system
10/23/2013CN203248063U Audio-frequency vibration power head and tractor drilling machine comprising same
10/23/2013CN203248062U Integrated power device of truck-mounted drilling rig
10/23/2013CN203248061U Floating tooth plate drive sleeve and power head of rotary drilling rig
10/23/2013CN203248060U Hydraulic drilling rig for drilling in coal mine
10/23/2013CN203248059U Electric drilling machine for road and bridge maintaining
10/23/2013CN103362437A Portal frame type core drilling machine
10/23/2013CN103362436A Hydraulic vertically-lifting trench excavator
10/22/2013US8561717 Articulating drill with integrated circuit board and method of operation
10/22/2013US8561714 Hand-held power tool
10/22/2013CA2585979C Worm and collar drive drill rig
10/17/2013WO2013154271A1 Rotary head of large-diameter drilling machine
10/17/2013WO2013092911A3 Casing and adapter for producing a mechanical connection between a top drive and a casing
10/16/2013CN203238634U Vehicle-mounted hydraulic spiral pile driver
10/15/2013US8556004 Bottom preventer for use in a drilling system
10/02/2013CN203223171U Simple highway drilling machine
10/02/2013CN203223169U Rotary pile drilling rig
09/2013
09/25/2013CN203213955U Arch center pipe shed drilling rig
09/25/2013CN203213953U Hydraulic engineering driller provided with power heads
09/25/2013CN203213952U Transmission mechanism with double inputs
09/25/2013CN103321567A Drill tool and method for measuring thicknesses of sea ice and river ice while drilling
09/25/2013CN103321474A Hole-drilling pole-erecting vehicle
09/18/2013CN203201498U Soil compacting and discharging drilling rod, spiral drill and pile machine
09/18/2013CN203201458U Power head hub, power box provided with power head hub and power head provided with power box
09/18/2013CN102226406B Construction method of super-long advanced anchor bars
09/17/2013US8538697 Core sample preparation, analysis, and virtual presentation
09/17/2013CA2718116C Top drive apparatus
09/11/2013CN203188903U Combined type driving key with detachable rotary drilling rig power head
09/11/2013CN203188902U Mining pneumatic frame column type drilling rig
09/11/2013CN203188901U Movable type power head of full hydraulic core drill
09/11/2013CN203188900U Large-scale non-excavation pipelaying drilling machine power head
09/11/2013CN203188899U Full sleeve special-type drilling machine
09/11/2013CN103291212A Long spiral power head buffer device and multifunctional power head buffer device of rotary drilling rig
09/11/2013CN103291211A Power head preventing silt from intruding into box body
09/11/2013CN103291210A Gate-type double-tower gear-driven drilling machine
09/11/2013CN101936132B Reciprocating drill for mine
09/11/2013CN101936128B Drilling machine for mines
09/11/2013CN101936127B Mine drilling machine
09/10/2013US8528659 Pneumatic power tool with exhaust silencer
09/06/2013WO2012148807A3 Mechanically actuated casing drive system tool
09/04/2013CN203175393U Turntable with buckle dismounting function
09/04/2013CN203175392U Petroleum drilling machine turnplate and bearing used for petroleum drilling machine turnplate
09/04/2013CN203175391U Multifunctional drill power head
09/04/2013CN203175390U Dual-power hydraulic well drill jacking driving device
09/04/2013CN203175389U Modular easy-transition kilometer-grade rock core drilling equipment
09/04/2013CN103277042A Drilling machine and hydraulic control system of drilling machine power head
09/04/2013CN103277041A Spline type clutch transmission device
09/04/2013CN103277040A Power head used by rotary excavating drilling machine and long spiral drilling machine in common
09/04/2013CN103277039A Power head capable of driving drill bit into rock
09/04/2013CN102535445B Molding device and molding method for long spiral extruding rock-entering cast-in-place pile
09/03/2013US8525690 Synchronized telemetry from a rotating element
08/2013
08/28/2013CN203161095U Drilling machine and rotary device thereof
08/28/2013CN203161077U Multifunctional vertical shaft type core drill
08/28/2013CN203161076U Pile foundation drilling machine with ultra-large aperture
08/28/2013CN103266851A Power head for reducing oil-shortage abrasion of bearing
08/28/2013CN102261096B Crankshaft holing needle of trench sawing machine
08/28/2013CA2806742A1 Torque control device for a downhole drilling assembly
08/28/2013CA2791201A1 Drive device and method for driving a drill rod
08/22/2013US20130216312 Method, System And Rock Drilling Apparatus For Installing A Pipe In Drilled Holes In Rock Drilling
08/21/2013CN203146748U Double-speed ratio gyration reducer
08/21/2013CN203146698U Drilling machine with balance weight being flexibly increased and decreased
08/21/2013CN203146263U Reverse circulation deep-well drilling machine power head second-level water-elevating device
08/21/2013CN203145972U Pneumatic anchor rod drilling rig
08/21/2013CN203145827U Trestle type column all-hydraulic drill for coal mine
08/21/2013CN203145826U Pipe shed drill power head
08/21/2013CN203145825U Oversized-aperture pile foundation drilling machine
08/21/2013CN203145014U Pipe pile cleaning tool
08/21/2013CN203145004U Whole pile long steel tube dado synchronous tube sinking and rotary excavating earth borrowing grouting pile
08/21/2013CN103256003A Overturning type wellhead testing device
08/21/2013CN103256002A Rotary drilling rig and construction method thereof
08/21/2013CN103256001A Rotary drilling rig and construction method thereof
08/21/2013CN102434091B Rotary drilling rig, power head shock absorption system and shock absorption method thereof
08/14/2013CN203130083U Single-head hydraulic drilling rig type coal mining machine
08/14/2013CN203129952U Non-excavation horizontal directional drilling machine
08/14/2013CN203129950U Automatic circling drilling machine
08/14/2013CN203129949U Simple spiral drilling machine
08/14/2013CN203129948U Multifunctional cutting drilling machine
08/14/2013CN203129946U Power head pedestal of drilling machine
08/14/2013CN203129945U Power head of drilling machine
08/14/2013CN103244050A Control method for rotary drilling rig to prevent high torque car holding and device thereof
08/14/2013CN102322224B Mechanical drill rod
08/13/2013US8510081 Drilling scorecard
08/13/2013US8505652 Bearing assembly system with integral lubricant distribution and well drilling equipment comprising same
08/07/2013CN203114183U Power head installation bracket for raise boring machine
08/07/2013CN203114161U Engineering driller hydraulic power head
08/07/2013CN203114160U Underground coal mine directional drilling machine big through hole power head with braking function
08/07/2013CN203114159U Rotary water-sealing device
08/07/2013CN203114158U Fully-revolving casing pipe drilling machine
08/07/2013CN203114157U Small-hole type engineering driller
08/07/2013CN203114156U All-hydraulic engineering driller
08/07/2013CN103233680A Multifunctional drilling machine power head
08/06/2013US8499858 Modular top drive lubrication system and methods
08/01/2013US20130192895 Device and Method for Drilling with Continuous Tool Rotation and Continuous Drilling Fluid Supply
07/2013
07/31/2013DE202010017993U1 Bohrer und Bohrgerät, insbesondere Erdbohrgerät, mit einem Bohrer Drills and Drill, especially earth boring with a drill
07/31/2013CN203098748U Top-drive split type gear case
07/31/2013CN203097736U Rope doubling feed mechanism
07/31/2013CN203097714U Full-hydraulic underground tunnel drilling machine
07/31/2013CN203097707U Full-hydraulic vibration rotation coring power head
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