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)
10/1982
10/26/1982CA1134203A1 Down hole tool, including a screen assembly and a packer assembly
10/20/1982EP0062716A1 Improved screen for collection and distribution of process streams and assembly of such screens
10/19/1982US4355365 Electronic intermitter
10/19/1982US4355307 Safety stress shutdown switch
10/19/1982US4354554 Well safety valve
10/19/1982US4354553 Corrosion control downhole in a borehole
10/19/1982US4354552 Slurry concentrator
10/19/1982US4354524 Automatic reset pneumatic timer
10/19/1982US4354433 Apparatus for cutting pipe
10/19/1982CA1133825A1 Surface controlled liquid removal system for gas producing wells
10/19/1982CA1133688A1 Petroleum sulfonates for oil recovery
10/13/1982EP0062481A2 Conduits to be used in association with ocean thermal energy conversion systems
10/13/1982EP0062378A1 A plastics pipe comprising longitudinally extending channels in its wall and slits, a method of extruding such a plastics pipe and a plastics well pipe comprising a plurality of interconnected plastics pipes
10/12/1982US4353419 Method for manufacturing a well production and sand screen assembly
10/12/1982US4353418 In situ retorting of oil shale
10/12/1982US4353417 Method for producing a well in an unconsolidated formation
10/12/1982US4353244 Method of determining the azimuth and length of a deep vertical fracture in the earth
10/12/1982CA1133538A1 Well tubing coupling apparatus
10/12/1982CA1133389A1 Compensating bridge plug
10/12/1982CA1133388A1 Connection of underwater lines
10/12/1982CA1133387A1 Selective permeability reduction with polymerizable monomers around steam injection wells
10/12/1982CA1133385A1 Gravel pack tool
10/06/1982EP0061494A1 Thermal enhancement.
10/05/1982US4352512 Molded fittings
10/05/1982US4352395 Injection of a magnesium hydroxide suspension through a well bore
10/05/1982US4352394 Cable-suspended well pumping systems
10/05/1982US4352376 Controller for well installations
10/05/1982CA1132899A1 Method of solution mining salts from an underground salt deposit
10/05/1982CA1132783A1 Method of consolidating parts of permeable underground formation using dimethylaminomethylphenol
09/1982
09/29/1982EP0061239A1 System for pumping subterranean fluids
09/29/1982EP0061111A2 Method for the underground gasification of solid combustible materials
09/29/1982EP0061070A1 Telescoping boom supported flip-flop service line
09/28/1982US4351623 Underwater storage of oil
09/28/1982US4351566 Method and apparatus for mixing gaseous oxidant and lixiviant in an in situ leach operation
09/28/1982CA1132453A1 Oil recovery process
09/22/1982EP0060507A1 Equipment adaptable to telescoping service line
09/21/1982US4350391 In situ leaching process
09/21/1982US4350371 Subsea pipe connector
09/21/1982US4350203 Well production system to prevent cave-in and sloughing in unconsolidated formations
09/21/1982US4350080 Apparatus to pump multiple wells
09/21/1982CA1131899A2 Method for fracturing subterranean formations
09/21/1982CA1131898A1 Petroleum recovery process using native petroleum surfactants
09/15/1982EP0059910A2 Mining method for deep coal seams
09/14/1982US4349227 Mining system for in situ oil shale retorts
09/14/1982CA1131665A1 Hydraulic mining tool apparatus
09/14/1982CA1131404A1 Synergistic microbicidal mixtures of 4-isothiazolin-3-ones and quaternary ammonium salts for use in oil field injection water
09/08/1982EP0059376A1 Modular installation for subsea oil production
09/07/1982US4348137 Pivotal connection for articulated column of sea-bed working structure
09/07/1982US4348058 Method and apparatus for slurry borehole mining
09/07/1982US4348056 Method for above-ground leaching of metal bearing ores at below-freezing temperatures
09/07/1982US4347899 Downhold injection of well-treating chemical during production by gas lift
09/01/1982EP0059020A1 Method for removing undesired components from the soil
08/1982
08/31/1982US4346936 Treatment of subterranean uranium-bearing formations
08/31/1982US4346935 Method for fragmenting oil shale formation
08/31/1982US4346761 Hydra-jet slotting tool
08/31/1982CA1130721A1 Petroleum production technique utilizing a hot aqueous fluid
08/31/1982CA1130550A1 Polymer flood filtration improvement
08/25/1982EP0058371A1 Process for recovering oil from subterranen reservoirs by flooding, using an emulsion
08/24/1982US4345979 Method and apparatus for recovering geopressured methane gas from ocean depths
08/24/1982US4345794 Placement of explosive for forming in situ oil shale retort
08/24/1982US4345652 Leaching with sodium or potassium hydroxide solution, injection and circulation of saline solution
08/24/1982US4345650 Process and apparatus for electrohydraulic recovery of crude oil
08/24/1982US4345647 Apparatus to increase oil well flow
08/24/1982CA1130203A1 Hydraulic running tool for liner hangers
08/24/1982CA1130201A1 Method for continuously producing viscous hydrocarbons by gravity drainage while injecting heated fluids
08/24/1982CA1130200A1 Down hole pump with bottom receptor
08/24/1982CA1130199A1 In situ leaching
08/24/1982CA1130196A1 Casing perforator
08/18/1982EP0057950A1 Articulated conduit system for a floating body
08/17/1982US4344923 In-situ leaching
08/17/1982US4344651 Corrosive environment tension packer
08/17/1982US4344650 Recovery of alkali values from trona deposits
08/17/1982US4344491 Apparatus for actuating downhole flow control valves
08/17/1982US4344488 Charged aerosol petroleum recovery method and apparatus
08/17/1982US4344486 Method for enhanced oil recovery
08/17/1982US4344485 Recovery of oil from a tar sand deposit
08/17/1982US4344484 Determining the locus of a processing zone in an in situ oil shale retort through a well in the formation adjacent the retort
08/17/1982US4344483 Multiple-site underground magnetic heating of hydrocarbons
08/17/1982CA1129766A1 Method for controlling corrosion in thermal vapor injection gases
08/17/1982CA1129765A1 Subterranean cavity chimney development for connecting solution mined cavities
08/17/1982CA1129634A1 Polymer thickener in water-alternating gas process for oil recovery
08/11/1982EP0057641A2 In situ combustion for oil recovery
08/10/1982US4343712 Process for secondary recovery
08/10/1982US4343363 By sequential injection of oxidizer, water, aqueous solution of a dry polymer
08/10/1982US4343362 Recovery of oil from an oil reservoir by miscible displacement
08/10/1982US4343361 Method for controlling underground combustion
08/10/1982US4343360 Method for controlling underground combustion
08/10/1982US4343359 Perforated pipe
08/10/1982US4343358 Laser slotted plastic well screen
08/10/1982US4343356 Method and apparatus for treating subsurface boreholes
08/10/1982CA1129446A1 Method and apparatus for drilling and mining
08/10/1982CA1129340A1 Hydraulic tubing tensioner
08/10/1982CA1129337A1 In situ processing of mined oil shale
08/10/1982CA1129336A1 Method of in-situ recovery of viscous oils or bitumen utilizing a thermal recovery fluid and carbon dioxide
08/10/1982CA1129305A1 Low well yield control system and method
08/05/1982WO1982002496A1 Offshore pollution control
08/03/1982US4342572 Thermal circulation gas treater
08/03/1982US4342519 Connector for an end of an underwater pipe
08/03/1982US4342484 Well stimulation for solution mining
08/03/1982US4342364 Apparatus and method for coupling sonic energy to the bore hole wall of an oil well to facilitate oil production
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