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)
10/2005
10/27/2005US20050236190 Acoustic flow pulsing apparatus and method for drill string
10/27/2005US20050236016 Coiled tubing wellbore cleanout
10/27/2005US20050236015 Drill cutting deoiling
10/27/2005US20050235745 Methods for measuring a formation supercharge pressure
10/26/2005EP1588020A1 Apparatus for the cooling of drilling liquids
10/26/2005EP1588015A2 Apparatus and methods for drilling a wellbore using casing
10/26/2005EP1438482A4 Cementing system for wellbores
10/26/2005CN2736522Y 过滤器 Filter
10/26/2005CN1688793A Well control using pressure while drilling measurements
10/26/2005CN1688790A A method and device by a displacement tool
10/26/2005CN1224774C Drilling system
10/25/2005US6957698 Downhole activatable annular seal assembly
10/25/2005CA2277799C Closed device for treatment of drilling fluids and cuttings
10/23/2005CA2504520A1 Drill string valve assembly
10/21/2005CA2464970A1 Portable combination flare and holding tank apparatus and method of use
10/20/2005WO2005098197A1 Flow switchable check valve
10/20/2005WO2005098192A2 Improvements in or relating to rock drilling equipment
10/20/2005US20050230119 Multi-cycle downhole apparatus
10/20/2005DE202005012724U1 Drop hammer drilling device, especially for overlap drilling, has overlap tube connected to drilling crown and casing tube between hammer and overlap tube that is preferably closed at bottom
10/20/2005DE202005012722U1 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
10/19/2005EP1586737A1 Completion apparatus and methods for use in hydrocarbon wells
10/19/2005EP1585885A2 Actuator for well-head valve or other similar applications and system incorporating same
10/19/2005EP1448866B1 Method and device for boring holes
10/19/2005EP1282758B1 Bypass valve
10/13/2005WO2005095751A1 Modular design for downhole ecd-management devices and related methods
10/13/2005US20050227875 Method of reclaiming brine solutions using an organic chelant
10/13/2005US20050224232 Workover unit and method of utilizing same
10/13/2005US20050224231 Flow switchable check valve
10/13/2005US20050224228 Method and apparatus for isolating and testing zones during reverse circulation drilling
10/12/2005CN1682007A Drilling method
10/12/2005CN1681902A Shale hydration inhibition agent and method of use
10/11/2005US6953098 Hydraulic drill string accumulator
10/11/2005US6953097 Drilling systems
10/06/2005WO2005093204A1 Downhole apparatus for mobilising drill cuttings
10/06/2005US20050222772 Oil rig choke control systems and methods
10/06/2005US20050217864 Circulating sub
10/06/2005US20050217862 Remote operated actuator system for drill string internal blowout preventer
10/06/2005US20050217852 Method of sealing subterranean zones
10/06/2005US20050217489 Device for the separation of the gas phase from a mixture of fluid/gas for use in hydrocarbons producing and injection wells
10/06/2005CA2558471A1 Downhole apparatus for mobilising drill cuttings
10/05/2005EP1582504A1 Method and system for producing inert gas from combustion by-products
10/05/2005EP1581720A1 Seal cup for a wellbore tool and method
10/05/2005EP1581718A1 Anchoring device for a wellbore tool
10/05/2005CN2731074Y Brick axe
10/05/2005CN2731073Y Sand flushing tool for small diameter pipe of borehole
10/05/2005CN2731072Y Self-flushing device for thick oil well
10/05/2005CN1678813A Fast valve actuator and tool provided with same
10/05/2005CN1676880A Rock salt deposit horizontal chamber type oil-gas depot and its building method
10/04/2005CA2258164C Drill tube for forming drill strings
09/2005
09/30/2005CA2502598A1 Openhole perforating
09/29/2005WO2005090740A1 Spear type blow out preventer
09/29/2005WO2005090738A1 Drilling head with protective screen
09/29/2005US20050211471 System and method for controlling drill motor rotational speed
09/23/2005CA2502051A1 Method and system for producing inert gas from combustion by-products
09/22/2005WO2005088067A1 Downward and upward expansion with expandable cone
09/22/2005WO2005088065A1 Apparatus and methods for sealing voids in a subterranean formation
09/22/2005US20050205303 Drilling fluid bucket and method
09/22/2005US20050205261 System and method for remediating pipeline blockage
09/22/2005US20050205250 Apparatus and methods for drilling with casing
09/22/2005US20050205118 Sample Washer for Drilling Cuttings and other unconsolidated and discreet medias.
09/22/2005US20050204962 Low density foamed cement of a low density base, cementitious material, a zeolite foam stability agent, a mixing fluid of a foaming agent, a surfactant and air; enhanced compressive strength
09/21/2005CN2727381Y Thermal cleaning device for cold transport process for oil well
09/18/2005CA2461524A1 Method of sealing subterranean zones
09/15/2005WO2005084332A2 Methods for measuring a formation supercharge pressure
09/15/2005WO2005062749A3 System for drilling oil and gas wells using a concentric drill string to deliver a dual density mud
09/15/2005US20050199532 Screen basket and shale shakers
09/15/2005US20050199426 Rotatable drill shoe
09/15/2005US20050199390 downhole tool contains an inner tubing, outer tubing and a mixing chamber formed between the bottom end of both tubes; for pumping, mixing first and second components of the cement sealant and discharging; monitoring the formed cement properties
09/14/2005CN1667236A Automatic mud grouting device for drilling
09/13/2005US6942038 Mud diverter and method for horizontal drilling
09/13/2005CA2355103C Hydraulic underreamer and sections for use therein
09/13/2005CA2249432C Method and apparatus using coiled-in-coiled tubing
09/09/2005WO2005082541A1 Cyclone assembly and method for increasing or decreasing flow capacity of a cyclone separator in use
09/08/2005US20050194853 Magnetic power transmission devices for oilfield applications
09/08/2005US20050194322 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
09/08/2005US20050194147 Increasing reaction efficiency of acetic acid
09/08/2005US20050194129 Expander for expanding a tubular element
09/07/2005EP1571078A1 Brine-based drilling fluids for ballast tank storage
09/07/2005EP1570154A2 Well bore cleaning and tubular circulating and flow-back apparatus
09/07/2005EP1421252A4 Washpipe assembly
09/07/2005CN2723661Y Well-rig
09/07/2005CN1666005A Centrifugal drill cuttings drying apparatus
09/07/2005CN1664302A Continuous circulation system for oil and gas well and usage thereof
09/07/2005CN1218112C Method of creating well bore
09/06/2005US6938707 heating a circulating fluid, to produce a heated drilling fluid, placing in contact with a region of a well bore of a subterranean formation proximate to where drilling is to occur, the well bore remains at a higher temperature
09/06/2005CA2153183C Fluid system for controlling fluid losses during hydrocarbon recovery operations
09/01/2005WO2005080745A1 Drill pipe header
09/01/2005WO2005080744A1 A method for monitoring the health of a choke used in wellbore operations
09/01/2005WO2005080743A1 Drill string component, wear protection component and cutter head for use in a rock drilling process
09/01/2005WO2005079992A1 Method and system for treating drill cuttings
09/01/2005US20050192855 System for evaluating over and underbalanced drilling operations
09/01/2005US20050189144 Mud saver valve
09/01/2005US20050189106 Flow control apparatus for use in a wellbore
09/01/2005DE102004004121A1 Lakebehälter mit Filtersystem Lake reservoir with filter system
09/01/2005CA2553606A1 Drill string component, wear protection component and cutter head for use in a rock drilling process
08/2005
08/31/2005EP1436482A4 High power umbilicals for subterranean electric drilling machines and remotely operated vehicles
08/31/2005CN2721856Y Flushing tubular column
08/30/2005US6936574 Displacing a cement comprising a cement and a gelling additive into a well bore such that the gelling additive passes into the subterranean zone; allowing the gelling additive to form a crosslinked gel in the subterranean zone
08/30/2005US6936092 Positive pressure drilled cuttings movement systems and methods
08/25/2005WO2005076803A2 Apparatus for changing wellbore fluid temperature
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