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 7 - Special methods or apparatus for drilling
Patents for E21B 7 - Special methods or apparatus for drilling (22,064)
11/2010
11/17/2010CN101886520A Oilfield underground high-pressure fluid-driven spinning horizontal perforating device and application thereof
11/17/2010CN101886519A Anchor rod drilling machine capable of monitoring working state of drill hole, and monitoring device thereof
11/16/2010US7835631 Combination light and a device for dispensing a volatile substance
11/16/2010US7832500 Wellbore drilling method
11/16/2010US7832496 Deep-hole boring machine and deep-hole boring guide device
11/16/2010CA2509585C Control method for downhole steering tool
11/15/2010CA2702734A1 Cutting device and method for removing soil material
11/11/2010WO2010129468A2 Milling system and method of milling
11/11/2010WO2010129169A2 Standoff-independent resistivity sensor system
11/11/2010WO2010128861A1 Guiding device for rock drilling machine
11/11/2010WO2010107606A3 System and method for directional boring including continuous reverse rotation
11/11/2010WO2010096346A3 Drilling scorecard
11/11/2010WO2010057221A3 Subsea drilling with casing
11/11/2010US20100282517 Boring system
11/11/2010US20100282514 Vibrational apparatus
11/11/2010US20100282513 Method and device for drilling a hole in ground or rock material and forming a brace
11/11/2010US20100282510 Methods and apparatuses for measuring drill bit conditions
11/11/2010US20100282508 Identifying a trajectory for drilling a well cross reference to related application
11/11/2010US20100282474 Subsea overload release system and method
11/11/2010DE102009012083A1 Method for trenchless laying of one or multiple new conductors, particularly cables, involves over-drilling old pipe with overdrilling head which is driven by drilling rod in sliding manner
11/11/2010CA2760613A1 Milling system and method of milling
11/10/2010EP2247816A1 A method and system for installing geothermal heat exchangers, energy piles, concrete piles, micropiles, and anchors using a sonic drill and a removable or retrievable drill bit
11/10/2010EP2247815A2 Vertical direction adjustment tool for downhole drilling apparatus
11/10/2010EP2247814A1 A horizontal directional drilling system
11/10/2010CN201627573U Horizontal well completion device with pressure controlling and water-coning retaining functions
11/10/2010CN201627541U Underground drill string vibration reducing and pressurizing device
11/10/2010CN201627539U Narrow multi-angle drill rig device
11/10/2010CN201627534U Particle impact drilling device
11/10/2010CN101881150A Hydraulic cutting nozzle with residue filer device
11/10/2010CN101881135A Understructure of novel drilling machine base
11/10/2010CN101881134A Gallery-type vertical and horizontal dual-purpose drilling machine
11/09/2010US7829507 drilling a well bore in a subterranean formation, using a treatment fluid containing a base fluid, a viscosifier, a fluid loss control additive, and a degradable bridging agent such as, polysaccharide, a chitin, a chitosan, a protein, a polyester, a poly(glycolide), a poly( lactide), polycarbonate etc.
11/09/2010US7828082 Methods and apparatus for attenuating drillstring vibrations
11/09/2010US7828078 System for rapidly boring through materials
11/09/2010US7828076 Valve tester suspension assembly
11/09/2010CA2591698C Whipstock, running/retrieval tool and a system for tieing back a liner from a wellbore casing
11/09/2010CA2473073C Vessel for well intervention
11/04/2010WO2010127233A2 Casing bits, drilling assemblies, and methods for use in forming wellbores with expandable casing
11/04/2010WO2010126990A2 Variable force/variable frequency sonic drill head
11/04/2010WO2010126925A2 Wellbore fluids employing sacrificial viscosifiers
11/04/2010WO2010086634A3 Apparatus and method for setting a tool in a borehole
11/04/2010WO2009102804A3 Systems and methods for positioning of pads and orienting slot templates
11/04/2010US20100276203 Steering head
11/04/2010US20100276202 Method of drilling a wellbore
11/04/2010US20100276201 Secondary cutting structure
11/04/2010US20100276200 Bearing blocks for drill bits, drill bit assemblies including bearing blocks and related methods
11/04/2010US20100276199 Expandable reamer apparatus
11/04/2010US20100276198 Variable force/variable frequency sonic drill head
11/04/2010US20100276145 Milling system and method of milling
11/04/2010US20100275801 Method and apparatus for small-charge blasting
11/04/2010DE102008056262B4 Vorrichtung und Verfahren zum Absaugen von Bohrgut und Bohrschlamm Apparatus and method for sucking cuttings and drilling mud
11/04/2010CA2760262A1 Method and apparatus for applying vibrations during borehole operations
11/04/2010CA2755363A1 Variable force/variable frequency sonic drill head
11/03/2010EP2246519A1 Downhole hydraulic control system
11/03/2010EP2246482A1 Method and device for producing a localised low friction foundation element
11/03/2010EP2245257A2 Systems and methods for improved positioning of pads
11/03/2010EP2245256A2 Method and device for creating a deep borehole
11/03/2010EP2245233A1 Apparatus and method for making boreholes in the ground, the cross sections of which boreholes partially intersect
11/03/2010EP2245232A1 Apparatus and method for making boreholes in the ground, the cross sections of which boreholes partially intersect
11/03/2010CN201621275U Rotary and reciprocating motion sealing device for underground horizontal drilling machine
11/03/2010CN201620793U Guide shoe for pulse generator of wireless drilling gradient meter
11/03/2010CN201620760U Multifunctional jack-up supporting platform drilling machine three-direction slippage system for offshore oilfields
11/03/2010CN201620759U Movable well repairing manual platform
11/03/2010CN201620758U Rotary drilling machine
11/03/2010CN101876238A Anti-spraying connector for long-distance horizontal drilling
11/03/2010CN101876235A Restoration method for dry well
11/03/2010CN101099025B Dust suction method relating to drilling arrangement and drilling arrangement
11/02/2010US7825072 comprises nonionic low molecular weight polyacrylamide and high molecular weight polyacrylamide, long chain alcohol or amine or silicate shale inhibitor, anionic cellulose; for subterranean formations, stabilizing well bores
11/02/2010US7824130 Apparatus and method for joining a pipe conduit to a drilling device, expanding device or pull-in device
11/02/2010US7823663 Expandable reamer
11/02/2010US7823660 Apparatus and methods for drilling a wellbore using casing
11/02/2010US7823657 Drilling assembly, drilling reamer arm assembly, and methods of drilling
11/02/2010US7823643 Insulation shroud with internal support structure
11/02/2010US7823465 Bolt fastening method and apparatus
11/02/2010CA2469166C Method of freeing stuck drill pipe
11/02/2010CA2460070C Method for automatic generation of a drill pattern
10/2010
10/28/2010WO2010124194A2 Rotary blasthole drilling rig flexible jaw pipe positioner
10/28/2010WO2010122394A1 Subterranean continuous loop heat exchanger, method of manufacture and method to heat, cool or store energy with same
10/28/2010WO2010121345A1 Drill bit assembly having electrically isolated gap joint for electromagnetic telemetry
10/28/2010WO2010121344A1 A drill bit assembly having aligned features
10/28/2010WO2010101987A3 Two pipe horizontal directional drilling system
10/28/2010WO2010096629A3 Stabilizer assemblies with bearing pad locking structures and tools incorporating same
10/28/2010WO2010088228A3 Adjustable downhole motors and methods for use
10/28/2010WO2010083261A3 Directional drilling control devices and methods
10/28/2010US20100272515 Method of developing and producing deep geothermal reservoirs
10/28/2010US20100270084 Casing Hammer Power Swing-Out Apparatus for Drilling Rig
10/28/2010US20100270083 Housing arrangement
10/28/2010US20100270081 Apparatus and Method for Lateral Well Drilling Utilizing a Nozzle Assembly with Gauge Ring and/or Centralizer
10/28/2010US20100270080 Apparatus and Method for Lateral Well Drilling
10/28/2010US20100270079 Rotary directional drilling apparatus and method of use
10/28/2010US20100270077 Drill bits and tools for subterranean drilling, methods of manufacturing such drill bits and tools and methods of off-center drilling
10/28/2010US20100270076 Method and equipment for small-charge blasting
10/28/2010DE102009017515A1 Rammvorrichtung für Erdbohrabreiten Ram device for Erdbohrabreiten
10/28/2010DE102007012055B4 Bohrgerät, insbesondere zum Erd- und Gesteinsbohren, Verfahren zum Erstellen einer Bohrung im Erdboden sowie Bohranordnung Drill, particularly for soil and rock drilling procedure to create a hole in the ground and drilling assembly
10/28/2010CA2795478A1 A drill bit assembly having aligned features
10/28/2010CA2759437A1 Subterranean continuous loop heat exchanger, method of manufacture and method to heat, cool or store energy with same
10/28/2010CA2758734A1 Rotary blasthole drilling rig flexible jaw pipe positioner
10/27/2010EP2243579A2 Drilling module for creating multiple boreholes in a component and mobile drilling device unit for attachment to a vehicle, in particular with such a drilling module
10/27/2010EP2242893A2 Steerable system
10/27/2010EP2242892A2 Directional drilling system
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