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)
12/2006
12/21/2006	US20060283594 Method and apparatus for transferring rig weight to tubulars
12/21/2006	DE102005026921A1 Hammer-drilling arrangement for drilling purposes comprises a hammer-drill head, a flushing medium supply unit, a drill pipe with a conveying channel for the drillings and an overlaying pipe connected to a drilling crown
12/21/2006	CA2612285A1 Novel activating mechanism for controlling the operation of a downhole tool
12/20/2006	CN2849130Y Engineering vehicle for oil field well washing
12/20/2006	CN2849129Y Lift short connecting type rotary operation water tap
12/20/2006	CN2849128Y Filtering, metering, temperature measuring device of well washing liquid
12/19/2006	US7150327 Workover unit and method of utilizing same
12/14/2006	WO2006131339A1 Dth-hammer drilling device and overburden drilling method
12/14/2006	WO2006041820A3 Modular pressure control and drilling waste management apparatus for subterranean borehole operations
12/14/2006	WO2005103438A3 Drilling method and assembly for drilling large-diameter holes
12/14/2006	US20060278438 Drill cuttings re-injection system
12/14/2006	US20060278437 Fluid loss reducer for high temperature high pressure water based-mud application
12/14/2006	CA2654785A1 Dth-hammer drilling device and overburden drilling method
12/13/2006	EP1731708A1 Sledgehammer drilling apparatus and method
12/13/2006	EP1730383A1 Spear type blow out preventer
12/13/2006	CN1877076A Method of recycling foam for foam unbalanced drilling
12/13/2006	CN1289780C Packer for hydraulic underreamer
12/12/2006	US7147068 Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells
12/12/2006	US7147067 Zeolite-containing drilling fluids
12/12/2006	US7147052 Hyraulically releasable inflation tool for permanent bridge plug
12/07/2006	WO2005113937A3 Methods and apparatus for measuring formation properties
12/07/2006	US20060272860 Methods of improving well bore pressure containment integrity
12/07/2006	US20060272820 Cement compositions comprising environmentally compatible defoaming agents and methods of use
12/06/2006	EP1727960A1 Downhole apparatus for mobilising drill cuttings
12/06/2006	CN2844403Y Protective drilling-rod filter
12/05/2006	US7144512 Method of reclaiming brine solutions using an organic chelant
12/05/2006	US7143846 Method for drilling and drilling apparatus to enable reverse circulation
12/05/2006	CA2259819C Method and apparatus for mud pulse telemetry in underbalanced drilling systems
11/2006
11/30/2006	WO2006127845A2 Drill cuttings re-injection system
11/30/2006	WO2006125948A1 Apparatus and method for driving casing or conductor pipe
11/30/2006	US20060266527 Apparatus for radially expanding and plastically deforming a tubular member
11/30/2006	US20060266519 Methods of improving well bore pressure containment integrity
11/30/2006	US20060266107 Methods of improving well bore pressure containment integrity
11/30/2006	DE4335417B4 Absaugeinrichtung eines Bohr- oder Meisselgerätes Suction of a drilling or chipping tool
11/30/2006	CA2609227A1 Apparatus and method for driving casing or conductor pipe
11/29/2006	EP1726775A1 System and method for fluid control in expandable tubing
11/29/2006	EP1725737A1 Drilling head with protective screen
11/29/2006	EP1537290B1 Automated pipe joining system
11/29/2006	CN2841942Y Well flushing device
11/29/2006	CN2841933Y Hand-held water-controlled air coal drill
11/29/2006	CN1871408A Nozzle unit and method for excavating a hole in an object
11/28/2006	US7140455 Valve method for drilling with casing using pressurized drilling fluid
11/28/2006	US7140439 Well completion; sealing subterranean zones; treating fluids introduced into a subterranean zone penetrated by a wellbore, particularly fluids introduced as remedial compositions such as pills
11/23/2006	WO2006123109A1 Device and method for retrieving debris from a well
11/23/2006	US20060260808 introducing a mixture of fluids and surfactants into subterranean formation, to consolidate proppant particles; surface treatment
11/23/2006	CA2608292A1 Device and method for retrieving debris from a well
11/22/2006	EP1157189B1 Internal riser rotating control head
11/22/2006	EP0929619B1 Invert emulsion fluids suitable for drilling
11/22/2006	CN2839551Y Integrated whole-closed mud returning device
11/22/2006	CN2839550Y Mud forward and backward circulating system for well-drilling and-servicing machine
11/22/2006	CN1867617A Superabsorbent polymer aqueous paste and coating
11/21/2006	US7139219 Hydraulic impulse generator and frequency sweep mechanism for borehole applications
11/21/2006	US7138929 Method and apparatus for enhanced acoustic mud pulse telemetry during underbalanced drilling
11/21/2006	US7137459 Silicate drilling fluid and method of drilling a well therewith
11/21/2006	US7137453 Remote operated actuator system for drill string internal blowout preventer
11/21/2006	US7137446 Fluids comprising reflective particles and methods of using the same to determine the size of a wellbore annulus
11/21/2006	CA2273626C Wellbore cuttings re-cycling system
11/16/2006	WO2006121699A2 Flow through subassembly for a downhole drill string and method for making same
11/16/2006	US20060258547 Well completion; sealing subterranean zones; treating fluids introduced into a subterranean zone penetrated by a wellbore, particularly fluids introduced as pills; surfactants such as cetyltrimethylammonium chloride, cocoalkyltrimethylammonium chloride, water and oil based carrier fluids, zeolites
11/16/2006	US20060254826 Drilling method
11/16/2006	US20060254822 Method and apparatus for adding a tubular to drill string with diverter
11/16/2006	CA2606899A1 Flow through subassembly for a downhole drill string and method for making same
11/15/2006	EP1720954A1 Drilling fluids with improved shale inhibition and methods of drilling in subterranean formations
11/15/2006	CN2837498Y Wash pipe assembly for power swivel used in petroleum and natural gas drilling
11/15/2006	CN1864021A Internal blow out preventer ball and seat
11/14/2006	US7135107 separate cuttings from drilling slurry; addition of a flocculating agent to a slurry stream to form agglomerated solids; to both send a more dense mass of solids to the centrifuges and block separated fluids from ever reaching the centrifuges; minimize water reaching the centrifuges
11/14/2006	US7134514 Dual wall drill string assembly
11/14/2006	US7134498 Well drilling and completions system
11/14/2006	US7134496 Reducing or removing wellbore skin damage, invert emulsion drilling fluid and filter cake deposition during and after oil well drilling
11/14/2006	US7134489 System for controlling the discharge of drilling fluid
11/14/2006	CA2300683C Coiled tubing drilling with supercritical carbon dioxide
11/14/2006	CA2262807C Tubular string auto-fill sub
11/09/2006	CA2605606A1 Method and apparatus for angularly positioning a shaker separator bed
11/08/2006	EP1718839A1 System tank and output unit for transporting untreated drill cuttings
11/08/2006	CN2835541Y External casing packer filling circulating tool
11/07/2006	US7131492 Divinyl sulfone crosslinking agents and methods of use in subterranean applications
11/02/2006	WO2006114512A1 Device for extracting at least one type of gas contained in a drilling mud, an analysis arrangement and a related extraction method
11/02/2006	WO2005001237A8 Downhole activatable annular seal assembly
11/02/2006	US20060243491 Method and apparatus for removing cuttings in high-angle wells
11/02/2006	US20060243490 Apparatus and method for modified horizontal directional drilling assembly
11/02/2006	US20060243444 apparatus for radially expanding and plastically deforming a tubular member
11/02/2006	EP1716313A1 A method for monitoring the health of a choke used in wellbore operations
11/02/2006	EP1716312A1 Drill string component, wear protection component and cutter head for use in a rock drilling process
11/02/2006	EP1390602B1 Apparatus and method for the treatment of waste products
11/02/2006	CA2606415A1 Device for extracting at least one type of gas contained in a drilling mud, an analysis arrangement and a related extraction method
11/01/2006	CN1856636A Solid-liquid separation of oil-based muds
10/2006
10/31/2006	US7128169 Method for the removal and recovery of the oily component from drill cuttings with liquid CO2
10/31/2006	US7128161 Apparatus and methods for facilitating the connection of tubulars using a top drive
10/31/2006	US7128148 Well treatment fluid and methods for blocking permeability of a subterranean zone
10/31/2006	CA2283447C Liquid driven impact device
10/28/2006	CA2506117A1 Water based drilling fluid for shallow wells
10/26/2006	WO2006112728A1 Condition checking apparatus and method
10/26/2006	US20060237192 Lost circulation composition
10/26/2006	US20060237191 Model HCCV hydrostatic closed circulation valve
10/26/2006	US20060237186 Cementing system for wellbores
10/19/2006	WO2006110691A1 Apparatus and method for recovering oil-based drilling mud
10/19/2006	WO2006109040A1 Method for servicing a well bore using a mixing control system
10/19/2006	WO2006108466A1 Pumping system
10/19/2006	WO2005110020A3 Apparatus and method for modified horizontal directional drilling assembly
10/19/2006	US20060231291 Method and device for drilling into tubulars located within one another

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