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)
08/1982
08/03/1982CA1128830A1 Aqueous micro-emulsions of organic substances
07/1982
07/27/1982US4341647 Process for secondary recovery
07/27/1982US4341505 Sonic pressure wave pump for low production wells
07/27/1982CA1128415A1 Method for recovering oil from an underground formation
07/27/1982CA1128414A1 Well for the solution mining of salt from an underground salt formation and a method for operating said well
07/20/1982US4340253 Preflush-lixiviant process for solution mining of uranium ore beds
07/20/1982US4340252 Process for the in-situ leaching of uranium
07/20/1982US4340117 Underwater well installations and handling string joint therefor
07/13/1982US4339152 Method and apparatus for mixing gaseous oxidant and lixiviant in an in situ leach operation
07/13/1982US4339002 Sea buoy discharge manifold system
07/13/1982US4339000 Method and apparatus for a bridge plug anchor assembly for a subsurface well
07/13/1982US4338713 Method of manufacture of powdered metal casing
07/13/1982CA1127534A1 Method for restoring a leached formation
07/13/1982CA1127419A1 Methods and apparatus for sensing wellhead pressure
07/13/1982CA1127414A1 Meter proving method
07/08/1982WO1982002177A1 Composition and method allowing the collection and valorization of oil products
07/07/1982EP0055434A1 Addition products from polyether block polymers and bisglycidyl ethers, process for their production and their use
07/07/1982EP0055433A1 Oxalkylated addition products from ethylene oxide-propylene oxide block polymers and bisglycidyl ethers, and their use
07/06/1982USRE30988 Well tool
07/06/1982US4338203 Process for secondary recovery
07/06/1982US4337979 Process for the in-situ leaching of uranium
07/06/1982CA1127128A1 Dynamometer for monitoring sucker rod strings
07/06/1982CA1127127A1 Waste gas recovery ststems
07/06/1982CA1127044A1 Method and system for producing and transporting natural gas
06/1982
06/30/1982EP0055200A1 Composition and process for the recuperation and the valorisation of petroleum products
06/30/1982EP0054828A1 Deep well screen
06/29/1982US4337159 Shear-stabilized emulsion flooding process
06/29/1982US4337006 Device for preparing and cleaning trench for an aquifer recharging system
06/29/1982US4336966 Cratering in the deep cratering region to form an in situ oil shale retort
06/29/1982US4336843 Emergency well-control vessel
06/29/1982US4336842 Method of treating wells using resin-coated particles
06/29/1982US4336839 Direct firing downhole steam generator
06/29/1982CA1126649A1 Recovering petroleum from subterranean formations
06/29/1982CA1126648A1 Method and apparatus for flowing fluid from a plurality of interconnected wells
06/24/1982WO1982002073A1 Copolymers soluble in an aqueous medium and stable in an acid medium,preparation and use thereof
06/22/1982US4335980 Hull heating system for an arctic offshore production structure
06/22/1982US4335979 Offshore tower with ball and socket joint having fluid flow passage
06/22/1982US4335788 With calcium carbonate or barium carbonate used to control expansion
06/22/1982US4335786 Oil well pumping string tubular extension for increasing oil to salt water ratio
06/22/1982CA1126038A1 Vertically moored platform anchoring
06/15/1982US4334580 Continuous borehole formed horizontally through a hydrocarbon producing formation
06/15/1982US4334579 Method for gasification of deep, thin coal seams
06/15/1982CA1125795A1 System for undersea recovery of hydrocarbons
06/15/1982CA1125649A1 Direct combustion stimulation of a producing well
06/15/1982CA1125648A2 Method for explosive expansion toward horizontal free faces for forming an in situ oil shale retort
06/15/1982CA1125492A1 Acetal-acid compositions
06/10/1982WO1982001911A1 Process for selectively reducing the permeability of a subterranean formation
06/09/1982EP0053418A2 A method for the underground gasification of coal or browncoal
06/09/1982EP0053117A1 Blender apparatus
06/08/1982US4333684 Recovering oil from in situ shale retort
06/08/1982US4333529 Oil recovery process
06/08/1982US4333527 Side pocket mandrel and method of construction
06/08/1982CA1125168A1 Method for producing carbon dioxide from subterranean formations
06/01/1982US4332688 Aqueous acid solution containing an acrylamido alkanesulfonic acid polymer
06/01/1982US4332401 Insulated casing assembly
06/01/1982CA1124641A1 Rubble mining
06/01/1982CA1124496A1 Method and apparatus for making well screen
05/1982
05/26/1982EP0052537A1 Propping agent based upon zirconium oxide and silica for deep geological fractures
05/25/1982US4331202 Method for recovery of hydrocarbon material from hydrocarbon material-bearing formations
05/25/1982CA1124259A1 Petroleum sulfonates
05/25/1982CA1124172A1 Plunger lift system
05/25/1982CA1124171A1 Treating underground formations
05/18/1982USRE30935 Method of starting gas production by injecting nitrogen-generating liquid
05/18/1982US4330402 Water sampling and disposal apparatus for an offshore operating site
05/18/1982US4330306 Gas-liquid separator
05/18/1982US4330153 Identification of fluid flow under in-situ mining conditions
05/18/1982US4330141 Adjustable pipe union
05/18/1982US4330039 Pressure actuated vent assembly for slanted wellbores
05/18/1982US4330038 Oil reclamation process
05/18/1982US4330037 Well treating process for chemically heating and modifying a subterranean reservoir
05/18/1982US4329925 Fracturing apparatus
05/18/1982CA1123728A1 Method of extracting liquid and gaseous fuel from oil shale and tar-sand
05/18/1982CA1123727A1 Method of oil recovery by thermal mining
05/18/1982CA1123726A1 Explosive fracturing of deep rock
05/12/1982EP0051127A2 Direct firing downhole steam generator
05/12/1982EP0051091A1 Riser pipe assembly for use in production systems
05/11/1982US4329159 Energy saving heavy crude oil emulsion treating method and apparatus for use therewith
05/11/1982US4329085 Connection of underwater lines
05/11/1982US4328995 Production of lignite from underground deposits
05/11/1982US4328863 In situ retorting of oil shale
05/11/1982CA1123431A1 Low calcium xanthan gum
05/05/1982EP0016146B1 Separating one liquid from another
05/05/1982EP0012759B1 Stabilized petroleum sulfonate products and their use in subterranean oil recovery
05/04/1982US4327805 Method for producing viscous hydrocarbons
05/04/1982CA1122814A1 Method of determining change in subsurface structure due to application of fluid pressure to the earth
05/04/1982CA1122793A1 Oxyalkylated sulfonate in aqueous alkaline solution for oil recovery
04/1982
04/29/1982WO1982001387A1 Equipment for the recovery of oil flowing out of sub-water ground
04/27/1982US4326969 Process for secondary recovery
04/27/1982US4326818 Techniques for the storage of water
04/27/1982US4326752 Method for forming an in situ oil shale retort
04/27/1982US4326751 Blasting to a horizontal free face with mixing of fragments
04/27/1982US4326462 Shaped charge retention and barrier clip
04/27/1982US4326411 Method and apparatus for monitoring fluid flow
04/27/1982CA1122519A1 Method of recovering viscous petroleum from tar sand
04/27/1982CA1122518A1 Recovery of bitumen from tar sand material
04/21/1982EP0049818A1 Solutions of high molecular weight polymers having an increased flow resistance, and process for their preparation
04/20/1982US4325712 Method and device for conveying an essentially gaseous fluid through a pipe
04/20/1982US4325579 Well for the solution mining of salt from an underground salt formation and a method for operating said well
04/20/1982US4325433 Injecting an aqueous solution of mineral acid or organic acid to potentiate enhanced oil recovery
04/20/1982US4325432 Injection of combustion by-products from an internal combustion engine; oil wells
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