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)
11/1984
11/06/1984CA1177389A1 Releasable latching apparatus
10/1984
10/31/1984EP0123393A2 Ball type shut in tool for wells
10/30/1984US4479680 Method and apparatus for electrohydraulic fracturing of rock and the like
10/30/1984US4479556 Subterranean well casing perforating gun
10/30/1984US4479546 Method and apparatus for producing natural gas from tight formations
10/30/1984US4479544 Pressure actuated pack-off and method
10/30/1984US4479541 Method and apparatus for recovery of oil, gas and mineral deposits by panel opening
10/30/1984US4479540 Gasification of coal
10/30/1984US4479486 Method for utilization of oil field waste brine to develop a salt gradient solar pond
10/30/1984CA1176973A1 Process for enlargement of rock fissures
10/24/1984EP0122839A1 Method and apparatus for conducting logging and/or work-over operations in a borehole
10/23/1984US4479204 In a mineral recovery program
10/23/1984US4478586 Buoyed moonpool plug for disconnecting a flexible flowline from a process vessel
10/23/1984US4478294 Positive fire indicator system
10/23/1984US4478288 Apparatus with annulus safety valve for through tubing injection and method of use
10/23/1984US4478282 Height control technique in hydraulic fracturing treatments
10/23/1984US4478280 Steam drive oil recovery method utilizing a downhole steam generator
10/23/1984CA1176558A1 Heavy oil recovery from deep formations
10/16/1984US4477205 Apparatus for connecting underwater flow line hubs
10/16/1984US4477104 Releasable latching apparatus
10/16/1984US4476932 Method of cold water fracturing in drainholes
10/16/1984US4476931 Injecting an amphoteric polymer, solvent, surfactant and carrier; permeability
10/16/1984US4476928 Method and apparatus for solvent generation and recovery of hydrocarbons
10/16/1984US4476927 Method for controlling H2 /CO ratio of in-situ coal gasification product gas
10/16/1984US4476926 Method and apparatus for mitigation of radio frequency electric field peaking in controlled heat processing of hydrocarbonaceous formations in situ
10/16/1984US4476925 Sand shield for bottom hole pumps
10/16/1984US4476897 Flowline connector seal
10/16/1984CA1176154A1 Method for preventing annular fluid flow
10/09/1984US4475772 Leaching with ion exchange resins
10/09/1984US4475771 Cyclic solution mining of borate ores
10/09/1984US4475596 Enhanced oil recovery, gas generator
10/09/1984US4475595 With ammonium compound
10/09/1984US4475593 Acidified hydrocarbon resin emulsion, demulsification
10/09/1984US4475592 In situ recovery process for heavy oil sands
10/09/1984CA1175976A1 Stable suspensions of hydrosoluble polymers, and their preparation
10/02/1984US4474622 Composition and process for recovering and upgrading petroleum products
10/02/1984US4474409 Method of enhancing the removal of methane gas and associated fluids from mine boreholes
10/02/1984US4474408 Ion exchanging
10/02/1984US4474239 Sand placement
10/02/1984US4474238 Method and apparatus for treatment of subsurface formations
10/02/1984US4474237 Oil recovery
10/02/1984US4474234 Safety valve installed below an activation pump in a hydrocarbon production well
10/02/1984US4474213 Folding service line
10/02/1984US4474049 Meter proving method
10/02/1984CA1175463A1 Tubular connector
10/02/1984CA1175348A1 Method and electrical device for promoting oil recovery
10/02/1984CA1175347A1 Modified in situ retorting of oil shale
10/02/1984CA1175346A1 Indirect firing downhole steam generator
10/02/1984CA1175345A1 Method and apparatus for pumping subterranean fluids
09/1984
09/28/1984EP0061494A4 Thermal enhancement.
09/26/1984EP0119872A1 Method and apparatus for conducting wireline operations in a borehole
09/26/1984EP0119665A2 Apparatus and method for inverting a polymer emulsion
09/26/1984EP0119268A1 Hydrojet drilling means and method
09/25/1984US4473338 Controlled well pump and method of analyzing well production
09/25/1984US4473255 With oxidant
09/25/1984US4473121 Pressure regulating and relief valve assembly
09/25/1984US4473120 Method of retorting oil shale using a geothermal reservoir
09/25/1984US4473114 In situ method for yielding a gas from a subsurface formation of hydrocarbon material
09/25/1984US4472935 Method and apparatus for the recovery of power from LHV gas
09/25/1984CA1174965A1 Reservoir-tailored co.sub.2-aided oil recovery process
09/19/1984EP0118788A2 Method of and device for utilizing geothermal energy
09/18/1984USRE31677 Process for recovery of carbonaceous materials from subterranean deposits
09/18/1984US4472081 Apparatus for connecting underwater flowlines
09/18/1984US4472080 Method for installing and connecting underwater flowlines
09/18/1984US4471840 Method of coal degasification
09/18/1984US4471839 Steam drive oil recovery method utilizing a downhole steam generator
09/18/1984US4471838 Sonic method and apparatus for augmenting fluid flow from fluid-bearing strata employing sonic fracturing of such strata
09/18/1984CA1174590A1 Blast joint and protection element therefor
09/18/1984CA1174589A1 Method and apparatus for injecting fluid into a well
09/11/1984US4470722 Marine production riser system and method of installing same
09/11/1984US4470721 Crane assembly for floatable oil/gas production platforms
09/11/1984US4470469 Swivel head for drilling and mining tool
09/11/1984US4470465 Ball type shut in tool
09/11/1984US4470462 Foam and particulate material with steam for permeability alteration in subsurface formations
09/11/1984US4470460 Catalytic cracking, with regeneration of catalyst
09/11/1984US4470459 Apparatus and method for controlled temperature heating of volumes of hydrocarbonaceous materials in earth formations
09/11/1984CA1174164A1 Method of recovering heavy oil from a subterranean permeable, heavy oil-containing formation
09/11/1984CA1174163A1 Recovery of oil from tilted reservoirs
09/05/1984EP0117858A2 Apparatus for confining and controlling a flow of fluid from an oil/gas source, especially in an uncontrolled blow-out on the sea bed
09/04/1984US4469608 Surfactant composition containing alkylated biphenylyl phenyl ether sulfonates
09/04/1984US4469604 Surfactant systems
09/04/1984US4469178 Well gravel packing method
09/04/1984US4469177 Recovery of viscous oil from asphaltic oil-containing formations
09/04/1984US4469176 Method of reducing air intrusion
09/04/1984US4469170 Liquid skimmer apparatus
09/04/1984CA1173771A1 Fluid displacement with heteropolysaccharide solutions, and the microbial production of heteropolysaccharides
09/04/1984CA1173769A1 Treatment of polysaccharide solutions
08/1984
08/29/1984EP0116929A1 Tributylphenol-ethersulphonates, their use and process for the preparation of ether sulphonates
08/29/1984EP0116775A1 Treating wells with non-buoyant ball sealers
08/28/1984US4468335 Branched alkylpolyethoxypropane sulfonates and their use in enhanced oil recovery
08/28/1984US4468166 Apparatus for extending and retracting telescoping booms and pipelines
08/28/1984US4467878 For use in a cased well bore
08/28/1984US4467868 Enhanced oil recovery by a miscibility enhancing process
08/28/1984US4467866 Flow controlling apparatus
08/28/1984US4467831 Fluid-logic thyristor
08/28/1984CA1173357A1 Subsea riser manifold system
08/28/1984CA1173356A1 In situ recovery of viscous materials
08/28/1984CA1173355A1 In situ recovery of viscous materials
08/28/1984CA1173354A1 In situ recovery of viscous materials
08/28/1984CA1173353A1 In situ recovery of viscous materials
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