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)
12/2008
12/04/2008WO2008145166A1 Method for drilling a drill hole, and filter unit
12/04/2008WO2008144934A1 An in situ extraction process for the recovery of hydrocarbons
12/04/2008WO2008144905A1 Use of wax in oil-based drilling fluid
12/04/2008WO2008119821A3 Method and assembly for abrasive jet drilling
12/04/2008WO2008085946B1 Drilling components and systems to dynamically control drilling dysfunctions and methods of drilling a well with same
12/04/2008US20080296222 Enhanced Slurrification Method
12/04/2008CA2687877A1 Use of wax in oil-based drilling fluid
12/03/2008EP1996521A2 Recovery system
12/03/2008CN201159060Y Wash pipe assembly for oil-well rig water tap with pressure transmission bag
12/03/2008CN201159047Y Drill pipe
12/03/2008CN101316680A Water collecting device for core drilling device
12/03/2008CN101316641A Arrangement for processing dust
12/02/2008US7458430 Attachment means for drilling equipment
12/01/2008CA2591354A1 An in situ extraction process for the recovery of hydrocarbons
11/2008
11/27/2008WO2008144480A1 Slurrification process
11/27/2008WO2008142584A1 Treatment and reuse of oilfield produced water
11/27/2008WO2008142409A1 Downhole flow control tool and method
11/27/2008US20080290656 Device for a Pressure-Compensated Swivel
11/27/2008US20080289878 Downhole blowout preventor
11/26/2008EP1994254A2 Method and apparatus for managing variable density drilling mud
11/26/2008CN201155299Y Tractor boring machine
11/26/2008CN101312896A Drill cuttings storage and conveying
11/25/2008US7455113 Downhole impeller device
11/25/2008CA2446529C Disconnect check valve mechanism for coiled tubing
11/20/2008WO2008140882A1 In-line treatment of hydrocarbon fluids with ozone
11/20/2008WO2008139139A2 Dust control system for transferring dry material used in subterranean wells
11/20/2008US20080283302 Water Collecting Device for Core Drilling Device
11/20/2008US20080283301 Return drilling fluid processing
11/20/2008US20080283295 Slurrification process
11/20/2008CA2686404A1 In-line treatment of hydrocarbon fluids with ozone
11/19/2008EP1991468A1 Counterweighted container latch
11/19/2008EP1730383A4 Spear type blow out preventer
11/19/2008CN101310089A Device and method for feeding particles into a stream
11/19/2008CN101309736A Apparatus and method for separating solids from a solids laden fluid
11/19/2008CN101309735A Apparatus and method for separating solids from a solids laden fluid
11/19/2008CN101309734A Apparatus and method for separating solids from a solids laden fluid
11/18/2008US7451819 Openhole perforating
11/18/2008CA2547584C Method, system and tool for reservoir evaluation and well testing during drilling operations
11/18/2008CA2511280C Kick warning system using high frequency fluid mode in a borehole
11/18/2008CA2480187C Downhole cutting mill
11/13/2008WO2008136655A1 Sealing device and method for sealing a casing
11/13/2008US20080280787 Phenol-formaldehyde novolac resin having low concentration of free phenol
11/13/2008US20080277165 Method and system to recover usable oil-based drilling muds from used and unacceptable oil-based drilling muds
11/13/2008US20080277164 In-line treatment of hydrocarbon fluids with ozone
11/13/2008CA2684855A1 Sealing device and method for sealing a casing
11/12/2008CN201148849Y Oil well pressure test well washing vehicle
11/12/2008CN201148835Y Water sprinkling type project drill
11/11/2008US7448454 Method and system for return of drilling fluid from a sealed marine riser to a floating drilling rig while drilling
11/11/2008US7448450 Comprises chabazite; well bores
11/09/2008CA2588328A1 Dry drilling and core acquisition system
11/07/2008CA2587752A1 Mud saver valve
11/06/2008WO2008134278A1 Determination and control of wellbore fluid level, output flow, and desired pump operating speed, using a control system for a centrifugal pump disposed within the wellbore
11/06/2008WO2008133584A1 Neck adapter with side- flushing hole
11/06/2008WO2008132641A2 Well treatment using electric submersible pumping system
11/06/2008WO2008132440A2 Method for blending fracturing gel
11/06/2008WO2008095029A3 Use of cuttings tank for slurrification on drilling rig
11/06/2008WO2005084332A3 Methods for measuring a formation supercharge pressure
11/06/2008US20080271895 Method and a device for regulating a fluid flow between an outside and an inside of a well pipe
11/05/2008EP1986954A1 Hydrogen sulfide treatment system
11/05/2008CN201144658Y Safe type tank foot valve of drilling fluid solid controlling system
11/05/2008CN201144657Y Solid controlling system for circular drilling
11/04/2008US7445058 Nozzle unit and method for excavating a hole in an object
11/04/2008CA2492422C A system for evaluating over and underbalanced drilling operations
11/04/2008CA2344754C Coiled tubing wellbore cleanout
10/2008
10/30/2008WO2008131385A1 Rig storage system
10/30/2008WO2008076952A3 Liquid carbon dioxide cleaning of wellbores and near-wellbore areas using high precision stimulation
10/30/2008US20080264691 Drilling Fluid Containing A Recoverable Lost Circulation Material and Method of Using and Recovering The Same
10/30/2008US20080264690 Method and apparatus for programmable pressure drilling and programmable gradient drilling, and completion
10/30/2008CA2685008A1 Rig storage system
10/29/2008CN201141287Y Minute borehole hydropower presser
10/29/2008CN201141281Y Rotary digging drill rig with slurry level automatic control device
10/29/2008CN100429379C Stainless steel seepage scale removal blowdown backwash fine filter for flooding well
10/28/2008US7441609 Method of decreasing the disintegration of shale-containing cuttings and drilling fluid therefor
10/28/2008US7441607 Circulation tool
10/28/2008CA2336353C Method and tool for fracturing an underground formation
10/23/2008WO2008127123A1 An integrated device for the treatment of drill cuttings
10/23/2008WO2008057145A3 Dual rod drill pipe with improved flow path method and apparatus
10/23/2008US20080257543 Process and apparatus for enhanced hydrocarbon recovery
10/23/2008DE102007018788A1 Drilling apparatus for introducing drill-holes in ground, has drilling fluid line comprising connection-side end that is connected with coupling station that includes reactive connections for parking of inlet pipes for unused drilling fluid
10/22/2008CN201137472Y Flushing rotary oil rig tap flushing assembly
10/22/2008CN201137471Y Automatic slurry-mixing device
10/22/2008CN201137470Y Oil water well sand cut operation exit two stage sand-filtering device
10/22/2008CN101291746A Shale shaker
10/22/2008CN101289927A Transfer of finely ground weight material
10/21/2008US7438142 Recovery system
10/21/2008CA2167003C Low solids, high density fluids
10/16/2008WO2008124080A1 A method for the fracture stimulation of a subterranean formation having a wellbore by using impact-modified thermoset polymer nanocomposite particles as proppants
10/16/2008WO2008122901A2 Use of a chopper mechanism to add fibers to a well
10/16/2008WO2007083192B1 Wellbore system and method using a flow-actuated diverter valve
10/16/2008US20080251468 Cyclone Assembly and Method For Increasing or Decreasing Flow Capacity of a Cyclone Separator in Use
10/16/2008CA2682863A1 Use of a chopper mechanism to add fibers to a well
10/15/2008EP1980711A2 Downhole deployment valves
10/14/2008CA2459261C Apparatus and system for concentrating slurry solids
10/14/2008CA2178766C Control of the fluid loss of well drilling and servicing fluids
10/09/2008WO2008121490A2 Treatment for recycling fracture water - gas and oil recovery in shale deposits
10/09/2008WO2008119821A2 Method and assembly for abrasive jet drilling
10/09/2008WO2008024865A3 Compositions and methods for improving the productivity of hydrocarbon producing wells
10/09/2008US20080248975 An organic liquid, water, an emulsifier, a weighting material, a copolymer from chlorosulfonated alpha -olefin and ethylene; paraffins, polyamines, lecithin, barite; copolymers used as replacements for organoclays
10/09/2008US20080245572 Well Jet Device and the Operating Method Thereof
10/09/2008US20080245571 Earth drilling device
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