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 21 - Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
Patents for E21B 21 - Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor (13,780)
09/2010
09/22/2010CN101158269B Method for drilling roadbed small-caliber horizontal jacking pipe and drill bit
09/21/2010US7798247 Arrangement for sucking dust
09/21/2010US7798234 Umbilical assembly, subsea system, and methods of use
09/21/2010US7798218 Apparatus and a method of fragmenting hard particles
09/21/2010CA2556937C Methods for measuring a formation supercharge pressure
09/21/2010CA2515296C Methods and apparatus for wellbore construction and completion
09/16/2010WO2010060092A3 Methods and apparatuses for mixing drilling fluids
09/16/2010US20100230092 Apparatus and methods for facilitating the connection of tubulars using a top drive
09/15/2010EP1561004B1 Apparatus for recycling of oil based drilling fluid contaminated with water.
09/15/2010CN201582226U Centralizing pumping turbine pump for underground annuluses
09/15/2010CN201581886U Sand retaining plate device
09/15/2010CN201581838U Real time monitoring system of drilling fluid performance parameters
09/15/2010CN201581837U Oil pumping device for pressure release well washing
09/15/2010CN101832116A Oil-containing drilling-cutting countercurrent washing deoiling treatment device
09/14/2010US7793719 Top drive casing system
09/10/2010WO2010102232A2 Wellbore strengthening material recovery
09/10/2010CA2752719A1 Wellbore strengthening material recovery
09/08/2010EP2225434A2 Waste solid cleaning apparatus
09/08/2010CN201574733U Underground multifunctional extrusion-washing-discharge device
09/08/2010CN201574706U Continuous well cleaning device for water wells
09/08/2010CN101827913A Method for treating a fractured formation
09/08/2010CN101824964A Downhole drill of intelligent underground multi-branch horizontal drilling completion system
09/07/2010US7789201 Gear unit and method for controlling an internal pressure in the gear unit
09/07/2010US7789154 Eductor jet bushing for downhole use
09/07/2010CA2572516C Flow control apparatus for use in a wellbore
09/02/2010WO2010097616A2 Diverter cup assembly
09/02/2010WO2009094066A3 Method and system for fracturing subsurface formations during the drilling thereof
09/02/2010WO2009000068A8 Drilling fluid additive and method for improving lubricity or increasing rate of penetration in a drilling operation
09/02/2010US20100218934 Method and device for positioning a power tong at a pipe joint
09/01/2010EP2222935A2 Wired multi-opening circulating sub
09/01/2010CN201568382U Bidirectional nozzle hydraulic injecting pump
09/01/2010CN201568042U Pressure compensation device for managed pressure drilling
09/01/2010CN201567988U Automatic grouting circulation device for casing running
09/01/2010CN201567987U Complete equipment for processing waste drilling fluid while drilling
09/01/2010CN201567986U Dust catching cover of drilling machine
09/01/2010CN201567985U Ceaseless circulation well drilling device
09/01/2010CN201567984U Telescopic coal powder flushing spray pipe
09/01/2010CN201567983U Coal bed gas-well bridge type non-pollution continuous coal ash flushing technological pipe column
09/01/2010CN201567982U Gas drilling well precipitate dust prevention tool with heterogeneous structure flow division spray holes
09/01/2010CN201567969U Drill rod of drilling machine
08/2010
08/31/2010US7786053 Highly branched polymeric materials as coating on weighting agents
08/31/2010US7786052 wel lbore fluid includes an oleagninous continuous phase e.g. diesel oil, mineral oil, synthetic oil, ester oil, glycerides of fatty acids; a non-oleaginous phase e.g. fresh water or brine; a polymeric additive such as tannins or lignosulfates modified with epoxide containing modifier
08/31/2010CA2635163C Vibratory separator
08/31/2010CA2579647C Control systems and methods for active controlled bottomhole pressure systems
08/31/2010CA2571665C Apparatus and method for moving drill cuttings
08/26/2010WO2010095949A2 Device for passive pressure sealing
08/25/2010EP2220336A1 Rock drilling rig and method for drilling
08/25/2010CN201560731U Mine sump filter-pressing cleaning device
08/25/2010CN1890452B Method and system for controlling power consumption during a rock drilling process and a rock drilling apparatus therefore
08/25/2010CN101813594A Method for quantitatively evaluating solid-liquid separation effect of drilling fluid vibrating sieve
08/25/2010CN101812979A Countercurrent washing deoiling treatment method for oil-contained drilling cuttings
08/25/2010CN101082270B Drilling fluid treatment system
08/24/2010USRE41556 Method of use of a high pressure solid removal system
08/19/2010WO2010093691A1 Autochoke system
08/19/2010WO2010059475A3 Method and facility for treating waste drilling mud
08/19/2010WO2009074632A3 Wellbore system
08/19/2010US20100206584 Downhole tubular connector
08/19/2010US20100206549 Overpressure Protection in Gas Well Dewatering Systems
08/19/2010US20100206544 Integrated Cable Hanger Pick-Up System
08/19/2010DE102008053239B3 Device for forming process-controlled horizontal filter well utilized e.g. for ground water drainage in brown coal open mining, has post-cutting head with borehole conduit connected with borehole outlet and chipped pipe by swing bearing
08/19/2010CA2749580A1 Autochoke system
08/18/2010CN201554401U Hydraulic slag discharge device for drilling of deep anchor rod hole of tunnel base plate
08/18/2010CN201554400U Flush fluid treatment vehicle
08/18/2010CN201554399U Double-riser high-pressure hose landing prevention device
08/18/2010CN201554385U Rotary joint of circulating mud pipe of drilling pile machine
08/17/2010US7775304 Apparatus and method for driving casing or conductor pipe
08/17/2010US7775299 Method and apparatus for programmable pressure drilling and programmable gradient drilling, and completion
08/17/2010CA2489968C Method for the circulation of gas when drilling or working a well
08/12/2010WO2010089725A2 System and method for well clean-up
08/12/2010WO2010089573A1 A downhole tubular connector
08/12/2010WO2010089572A1 A downhole tubular connector
08/12/2010WO2010089525A1 Landing string assembly
08/12/2010US20100200302 Digging tool, digging bit, and device
08/12/2010US20100200300 Electromagnetic treatment of contaminated materials
08/12/2010US20100200299 Device for a top drive drilling machine for continuous circulation of drilling mud
08/12/2010US20100200236 Method of Circulating While Retrieving Bottom Hole Assembly in Casing
08/12/2010CA2751486A1 Landing string assembly
08/11/2010CN201546674U Novel multi-functional double-effect valve
08/11/2010CN201546648U Novel throttle manifold for managed pressure drilling
08/11/2010CN201546619U Composite test rig
08/10/2010US7770666 Drilling fluid containing a recoverable lost circulation material and method of using and recovering the same
08/10/2010US7770665 Use of cuttings tank for in-transit slurrification
08/10/2010US7770663 Apparatus for making quality control measurements while drilling
08/10/2010CA2532793C Top drive swivel apparatus and method
08/10/2010CA2450994C Method and apparatus to control the rate of flow of a fluid through a conduit
08/05/2010WO2010088681A2 System and method of monitoring flow in a wellbore
08/05/2010WO2010086590A2 Centrifugal mixing system
08/05/2010WO2010068347A3 Subsea solids processing apparatuses and methods
08/05/2010US20100193249 Drilling mud closed loop system, method, process and apparatus for reclamation of drilling mud
08/05/2010US20100193193 Subterranean system and method for treating and producing oil
08/05/2010CA2750739A1 Centrifugal mixing system
08/04/2010CN101793131A Drilling and grinding tubular column structure of two-stage shunting screw drill
08/03/2010US7767628 foaming composition includes a polymer, a gelling agent and its cross-linking agent, an optional foaming agent, or mixtures or combinations thereof; use of this drilling fluid system in a variety of downhole applications
08/03/2010US7766084 Downhole tool
08/03/2010CA2506278C A foamer/sulfur scavenger composition and methods for making and using same
08/03/2010CA2473323C Two string drilling system
08/03/2010CA2438115C Oleaginous drilling fluid that produces a useful soil amendment, method of use and bio-remediation of the same and resulting solids
08/03/2010CA2427090C Device for transporting particles of magnetic material
07/2010
07/29/2010WO2010084238A1 Method and apparatus for down-the-hole drilling
07/29/2010WO2010083803A2 Apparatus for a pipe string of a geological drill hole, pipe string, method for operating a geological drilling gear and method for producing a pipe string for a geological drill hole
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