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 43 - Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
Patents for E21B 43 - Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells (64,186)
11/1998
11/05/1998WO1998049423A1 Expandable well screen
11/05/1998WO1998040603A3 Apparatus and methods for generating energy utilizing downhole processed fuel
11/04/1998EP0875661A1 Method for moving equipment in a well system
11/04/1998EP0875659A2 Valve for use in a subterranean well
11/04/1998EP0874694A1 Cyclonic separator assembly and method
11/04/1998EP0527932B1 Preform device and process for coating and/or lining a cylindrical volume
11/03/1998US5831177 Fluid driven siren flowmeter
11/03/1998US5831156 Downhole system for well control and operation
11/03/1998US5830368 Method for borehole separation of oil and water in an oil well
11/03/1998US5829918 Method and apparatus for remediating contamination in soils
11/03/1998US5829538 Tubing conveyed perforating apparatus used in perforating a surrounding well
11/03/1998US5829529 Pumping method in a well
11/03/1998US5829526 Method and apparatus for placing and cementing casing in horizontal wells
11/03/1998US5829525 Bypass tool
11/03/1998US5829522 Sand control screen having increased erosion and collapse resistance
11/03/1998US5829520 Method and apparatus for testing, completion and/or maintaining wellbores using a sensor device
11/03/1998US5829519 Subterranean antenna cooling system
11/03/1998CA2162385C In-situ remediaton of contaminated heterogeneous soils
11/03/1998CA2144901C Spoolable coiled tubing mandrel and gas lift valves
11/03/1998CA2093096C Process and skid-mounted system for inert gas generation
11/01/1998CA2236457A1 Pressure activated switch valve
10/1998
10/28/1998EP0874130A2 Phased perforating guns
10/28/1998CN2295850Y Underwell oil discharger with lateral holes
10/28/1998CN1197153A Mine for directly producing coal gas in coal layer and its prodn. method
10/28/1998CN1197152A Method of displacement of reservoir oil by filling water
10/28/1998CN1197101A Application of cross-linking agent in polymer displacement of reservoir oil tech.
10/27/1998US5826659 In a method of producing gas from a gas and liquid
10/27/1998US5826656 Method for recovering waterflood residual oil
10/27/1998US5826655 Method for enhanced recovery of viscous oil deposits
10/27/1998US5826653 Phased array approach to retrieve gases, liquids, or solids from subaqueous geologic or man-made formations
10/22/1998WO1998046699A1 Method for producing heavy crude oil via a wellbore from a subterranean formation and converting the heavy crude oil into a distillate product stream
10/21/1998EP0871831A2 Subsea flexible pipe
10/21/1998EP0871817A1 Apparatus for setting a liner in a well casing
10/21/1998EP0871816A1 Release mechanism
10/21/1998EP0760895B1 Lateral drilling method
10/21/1998CN2295045Y Underground high-pressure hydraulic widowmaker punching head
10/20/1998US5825143 Method and apparatus for slowing back spin of a rod string of a progressing cavity pump powered by an electric motor when power is lost
10/20/1998US5824214 Method for hydrotreating and upgrading heavy crude oil during production
10/20/1998US5823631 Slurrified reservoir hydrocarbon recovery process
10/20/1998US5823266 Latch and release tool connector and method
10/20/1998US5823265 For production of oil or gas
10/20/1998US5823263 Method and apparatus for remote control of multilateral wells
10/20/1998US5823262 For use in terminating actuation of a pumping unit
10/20/1998US5823261 Well-pump alignment system
10/20/1998US5823260 Well screen
10/20/1998US5823258 Centralizer apparatus
10/20/1998US5823254 Well completion tool
10/20/1998US5823131 Method and apparatus for disconnecting and retrieving multiple risers attached to a floating vessel
10/15/1998WO1998045732A1 Pressure impulse telemetry apparatus and method
10/15/1998WO1998045731A1 High impact communication and control system
10/15/1998WO1998045009A2 Filter for subterranean use
10/15/1998WO1998019042A3 Method and apparatus to isolate a formation zone
10/14/1998EP0870196A1 Automatic well test system and method of operating the same
10/14/1998EP0870100A1 Flameless combustor
10/14/1998EP0681641B1 Method of reducing water in oil wells
10/14/1998CN2294331Y Full welded metallic sand-screen
10/13/1998US5819847 Adapter for oil well tubings
10/08/1998WO1998044078A1 System and method for hydrate recovery
10/08/1998CA2285196A1 System and method for hydrate recovery
10/07/1998CN2293644Y Downhole steam & water separator
10/07/1998CN2293643Y Multilayer priming apparatus for oil & gas well
10/07/1998CN1195389A Inflatable tubular sleeve for tubing or obturating well or pipe
10/07/1998CN1195388A Improvement in deep well pump apparatus
10/07/1998CN1195066A Pumping heating 2 in 1 vane pump oil production method and its device
10/06/1998US5816343 Phased perforating guns
10/06/1998US5816326 Uphole disposal tool for water producing gas wells
10/06/1998US5816325 Methods and apparatus for enhanced recovery of viscous deposits by thermal stimulation
10/06/1998US5816280 Process for transporting a fluid such as a dry gas likely to form hydrates
10/01/1998WO1998042948A1 Subsurface measurement apparatus, system, and process for improved well drilling, control, and production
10/01/1998WO1998042947A1 Expandable slotted tubing string and method for connecting such a tubing string
10/01/1998WO1998042945A1 Rotary drive shaft for downhole pump
10/01/1998WO1998032951A3 Method and device for driving bore-holes, especially in the sea bed, using a guide tip
10/01/1998WO1998026151A3 Method and device for driving bore holes, specially exploring and extraction drillings in the sea bottom
09/1998
09/30/1998EP0866910A1 Apparatus and method for forming a window or an outline thereof in the casing of a cased wellbore
09/29/1998US5813469 Coupled downhole pump for simultaneous injection and production in an oil wheel
09/29/1998US5813463 Method of completing welbores to control fracturing screenout caused by multiple near-welbore fractures
09/29/1998US5813461 For removing contaminants in a multiplicity of adjacent geologic strata
09/29/1998US5813455 Chemical dispensing system
09/29/1998CA2110163C Pump control system for a downhole motor-pump assembly and method of using same
09/24/1998WO1998041732A1 Wellhead device for retaining the solid particles carried by the production fluid
09/24/1998WO1998041731A1 Device by tubing
09/24/1998WO1998041730A1 Arrangement in a subsea production control system
09/24/1998WO1998041729A1 Device for limiting the bending radius of a flexible duct
09/24/1998WO1998041728A1 Removing a waste component from a hydrocarbon fluid
09/24/1998WO1998041727A1 Waste component removal from crude oil or gas
09/24/1998WO1998041304A1 A method and device for the separation of a fluid in a well
09/24/1998CA2283686A1 Wellhead device for retaining the solid particles carried by the production fluid
09/24/1998CA2281791A1 Waste component removal from crude oil or gas
09/23/1998EP0866213A2 A method and apparatus for acquiring data in a hydrocarbon well
09/23/1998EP0866212A1 Installation for production well
09/23/1998EP0865562A2 Tubing connector
09/23/1998EP0767699B1 Suppression of slug flow in a multi-phase fluid stream
09/22/1998US5811894 For use in an oil or gas production installation
09/22/1998US5810515 Protective device for an installation mounted on the seabed
09/22/1998US5810514 Method for introducing materials into a medium
09/22/1998US5810084 Gravel pack apparatus
09/22/1998US5810081 In a tool string
09/22/1998US5810032 Method and apparatus for controlling the distribution of two-phase fluids flowing through impacting pipe tees
09/22/1998CA2093466C Method and apparatus for variable speed control of oil well pumping units
09/18/1998CA2230771A1 Installation for effluent producing well
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