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 4 - Drives for drilling, used in the borehole
Patents for E21B 4 - Drives for drilling, used in the borehole (6,032)
01/2013
01/02/2013CN102852457A Follow-up drilling machine for down-hole hammer casing pipe
01/02/2013CN102086753B Down-hole drill (DHD) gyrator
12/2012
12/27/2012WO2012178041A2 Fluid migration shut-off
12/27/2012WO2012177339A2 Housing, mandrel and bearing assembly for downhole drilling motor
12/27/2012WO2012125619A3 Hydro-mechanical downhole tool
12/27/2012WO2011138577A3 System and method for maintaining position of a wellbore servicing device within a wellbore
12/27/2012US20120325561 Housing, Mandrel and Bearing Assembly for Downhole Drilling Motor
12/27/2012US20120325560 Bearing apparatuses, systems including same, and related methods
12/27/2012US20120325558 Rock Drill Bit, a Drilling Assembly and a Method for Percussive Rock Drilling
12/27/2012CA2838868A1 Housing, mandrel and bearing assembly for downhole drilling motor
12/26/2012CN202628960U Main transmission mechanism for three-speed rock drilling machine
12/26/2012CN202627961U Sliding-block-type concentric down-the-hole simultaneous casing drilling tool
12/26/2012CN202627960U Impact resistance type electric drill rotor
12/26/2012CN202627959U Double-stroke single-cylinder multi-stage hydraulic pressurizing device
12/26/2012CN102839917A Rotary hot-melting drill bit
12/26/2012CN102220841B Submarine sampling drilling rig
12/20/2012WO2012174101A2 Corrodible downhole article and method of removing the article from downhole environment
12/20/2012US20120318495 Subterranean Tool With Sealed Electronic Passage Across Multiple Sections
12/19/2012CN202611587U Electric drill rotor with mechanical sealing device
12/19/2012CN202611586U High wind pressure down-the-hole impactor
12/19/2012CN202611585U Pneumatic hydraulic frame column type drilling machine
12/19/2012CN102828690A Walking dual-swing downhole drill
12/19/2012CN102828689A Cable suspending type air partial reverse circulating motor mechanical core bit
12/19/2012CN102003139B Single body large-diameter pneumatic down-the-hole hammer
12/19/2012CN101994483B Tower type large-diameter deep well planet primary-secondary drill
12/13/2012WO2012170122A2 Modular control system for downhole tool
12/13/2012US20120312531 Well Treatment Using Electric Submersible Pumping System
12/12/2012CN101674916B Long reach spindle drive systems and method
12/11/2012US8327953 Drilling tool with feed control
12/05/2012CN202578510U Horizontal sampling drilling machine of deep sea polymetallic sulfide mining chimney
12/05/2012CN202578498U High-air-pressure down-hole impactor
12/05/2012CN202578497U Device for drilling water-bearing stratum
12/05/2012CN202578496U Rotary drilling machine for obtaining rock sample under polar region ice layer
12/05/2012CN202578495U Vertical shaft box gyrator used for vertical shaft type drilling machine
12/05/2012CN202578494U Screw rod drilling tool with automatic cooling function
12/05/2012CN202578493U Ultra-temperature screw drilling tool
12/04/2012US8322463 Down hole multiple piston tools operated by pulse generation tools and methods for drilling
11/2012
11/29/2012WO2012161596A1 Control mechanism
11/29/2012WO2012160544A1 Movement control system for a drilling plant
11/29/2012DE112010004366T5 Statoren für Bohrlochmotoren, Verfahren für ihre Herstellung und Bohrlochmotoren, die sieenthalten Stators for downhole motors, processes for their preparation and downhole motors, the sieenthalten
11/29/2012CA2837350A1 Movement control system for a drilling plant
11/29/2012CA2835865A1 Control mechanism
11/28/2012CN102797416A Stator for screw drills and machining process of stator
11/28/2012CN102003145B Hole driven type horizontal directional drilling reverse circulation hole dilating drill
11/28/2012CN101641489B Drilling tool with fluid cleaner
11/27/2012US8316965 Drilling tool with fluid cleaner
11/22/2012US20120292112 Apparatus for drilling faster, deeper and wider well bore
11/21/2012CN102787818A Small motor-driven geological core driller
11/21/2012CN102787804A Device and method for drilling by using full-automatic composite material continuous pipe
11/21/2012CN101672157B Well-digging and hole-drilling device of oil-field underground pneumatic-hydraulic motor and application thereof
11/20/2012US8312937 Battery for a power tool with a battery pack ejector
11/15/2012WO2012154296A1 Downhole rotational vibrator
11/15/2012WO2012154057A1 Device and method for pressure regulation of a well
11/15/2012WO2012116460A4 Pressurised fluid flow system for a normal-circulation down-the-hole hammer and hammer comprising said system
11/15/2012WO2012049331A3 A down-the-hole hammer
11/15/2012CA2833921A1 Downhole rotational vibrator
11/14/2012CN202531019U Multi-blade cutting hydraulic hole enlarging drilling machine
11/14/2012CN202531018U High-pressure shunting screw drilling tool
11/14/2012CN102086755B Continuous oil pipe-based guide high-pressure jet drilling system
11/14/2012CN101737009B Geometry steerable drilling system driven by liquid and gas phase drilling media rotary disc
11/13/2012US8307919 Clutch for a jack element
11/08/2012WO2012150864A1 Method and device for cleaning the upper portion of a well
11/07/2012EP2519707A1 Downhole guiding tool
11/07/2012EP2519706A2 Drive pin support
11/07/2012CN202520240U Novel drilling machine
11/07/2012CN202520219U High-efficiency down-hole hammer
11/07/2012CN102182751B Radial sliding bearing for turbine drill
11/06/2012US8302707 Down-the-hole drill reverse exhaust system
11/06/2012US8302682 Wireline tractor device
11/01/2012WO2012112016A3 Boring machine
11/01/2012WO2012087752A4 High temperature drilling motor drive with cycloidal speed reducer
10/2012
10/31/2012CN202510067U Combination device of air supported head and air guide box
10/31/2012CN202510028U Power head of deep hole hydraulic core drilling machine
10/31/2012CN102758883A Dill-rod-free drill machine transfer case
10/31/2012CN102758585A Idle-preventing system of hydraulic drill jumbo
10/30/2012US8297379 Systems and methods for providing a gearless drilling turbine
10/30/2012US8297378 Turbine driven hammer that oscillates at a constant frequency
10/30/2012US8297375 Downhole turbine
10/24/2012CN202500491U Closable screw drilling tool transmission shaft
10/24/2012CN102747951A Follow-up drilling machine for sleeve of down-the-hole hammer
10/24/2012CN102747950A Single-pump hydraulic control loop of key drilling action of cutting drill rig
10/24/2012CN102747949A Fast propulsion hydraulic control loop of down-the-hole drill rig
10/24/2012CN102747948A Double-pump hydraulic control loop of key drilling action of cutting drill rig
10/23/2012CA2627488C Backhead and drill assembly with backhead
10/23/2012CA2523092C Systems and methods using a continuously variable transmission to control one or more system components
10/17/2012CN202493217U Combined down-the-hole hammer
10/17/2012CN101646835B Drilling tool with feed control
10/11/2012WO2012138383A2 Drilling motor valve and method of using same
10/11/2012WO2012138288A1 Device and method for rock- and concrete machining
10/11/2012WO2012138287A1 Device for rock- and concrete machining
10/11/2012DE112010004392T5 Statoreinsätze, Verfahren für deren Herstellung und Bohrlochmotoren, die sie verwenden Statoreinsätze, processes for their preparation and downhole motors that use them
10/11/2012CA2832212A1 Drilling motor valve and method of using same
10/11/2012CA2832166A1 Device and method for rock- and concrete machining
10/11/2012CA2832165A1 Device for rock- and concrete machining
10/10/2012EP2507467A2 Grip enhanced tractoring
10/10/2012CN202483435U Underground electric driving and drilling system
10/10/2012CN202483434U Eccentric casing drilling tool
10/10/2012CN1836088B Flow gouging device of percussive drill and drill
10/10/2012CN102720453A Method and device for mechanically removing sand and draining liquid from pit shaft of oil/gas well in underbalanced state
10/10/2012CN101705786B Pot hole drilling machine carried on vehicle
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