Patents
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)
05/1976
05/11/1976US3955993 Method and composition for stabilizing incompetent oil-containing formations
05/11/1976US3955599 Apparatus for bending a flowline under subsea conditions
05/04/1976US3954636 Acid, liquid carbon dioxide
05/04/1976US3954629 Well treatment, mixture of polyethylene or ethylene-vinyl acetate copolymer and a polyamide
05/04/1976US3954627 Hydrocarbon, water and a sulfonate or carboxylate
05/04/1976US3954626 Fracturing, carbon dioxide, alkanol, hydroxypropyl methylcellulose gelling agent
05/04/1976US3954142 Zonal fracture treatment of well formations
05/04/1976US3954141 Multiple solvent heavy oil recovery method
05/04/1976US3954140 Recovery of hydrocarbons by in situ thermal extraction
05/04/1976US3954139 Secondary recovery by miscible vertical drive
05/04/1976US3953982 Method and apparatus for laying and connecting flow lines to submerged structures
04/1976
04/27/1976US3953073 Process for the solution mining of subterranean sodium bicarbonate bearing ore bodies
04/27/1976US3952804 Sand control for treating wells with ultra high-pressure zones
04/27/1976US3952802 Method and apparatus for in situ gasification of coal and the commercial products derived therefrom
04/27/1976US3952801 Method for igniting oil shale retort
04/27/1976US3952800 Sonic technique for augmenting the flow of oil from oil bearing formations
04/20/1976US3951458 Method of explosive fracturing of a formation at depth
04/20/1976US3951457 Hydraulic mining technique for recovering bitumen from tar sand deposit
04/20/1976US3951456 Process for effecting even retort working fluid flow throughout an in situ retort containing carbonaceous deposits
04/20/1976US3951218 Perforating apparatus
04/20/1976US3951210 Sand control method employing asphaltenes
04/13/1976US3950029 In situ retorting of oil shale
04/13/1976US3949559 Process for isolating aqueous brine layers in underground gas-storage caverns
04/06/1976US3948783 Process for the secondary and tertiary recovery of petroleum
04/06/1976US3948672 Diesel oil, salt water, xanthan gum
04/06/1976US3948325 Fracturing of subsurface formations with Bingham plastic fluids
04/06/1976US3948324 Well treating
04/06/1976US3948323 Thermal injection process for recovery of heavy viscous petroleum
04/06/1976US3948321 Liner and reinforcing swage for conduit in a wellbore and method and apparatus for setting same
04/06/1976US3948320 Method of in situ gasification, cooling and liquefaction of a subsurface coal formation
04/06/1976US3948319 Method and apparatus for producing fluid by varying current flow through subterranean source formation
04/06/1976US3948196 Apparatus for burning fluid at a burner mounted on a floating vessel subject to wave action
04/06/1976US3948176 Mechanical initiator for detonation of explosives
03/1976
03/30/1976US3946814 Method for oil recovery
03/30/1976US3946813 Method for stimulating well production
03/30/1976US3946812 Use of materials as waterflood additives
03/30/1976US3946811 Polyalkene oxide preslug for protecting displacement fluids from polyvalent ions
03/30/1976US3946810 In situ recovery of hydrocarbons from tar sands
03/30/1976US3946809 Oil recovery by combination steam stimulation and electrical heating
03/30/1976US3946808 Process for recovering hydrocarbons from a subterranean reservoir by in situ combustion
03/30/1976US3946807 Well tools
03/23/1976US3945795 Means for preventing damage to jacketed flexible pumping strand
03/23/1976US3945679 Subterranean oil shale pyrolysis with permeating and consolidating steps
03/23/1976US3945439 Method for oil recovery
03/23/1976US3945438 Sulfonated ethoxy compound
03/23/1976US3945437 Process for displacing oil using aqueous anionic surfactant systems containing aromatic ether polysulfonates
03/23/1976US3945436 Method and apparatus for cleansing well liner and adjacent formations
03/23/1976US3945435 In situ recovery of hydrocarbons from tar sands
03/23/1976US3945213 Subsea wellhead shielding and shock mitigating system
03/09/1976US3943059 Process of displacing oil in subterranean reservoir employing aqueous surfactant systems
03/02/1976US3941511 Pressurized
03/02/1976US3941510 Artificial lift for oil wells
03/02/1976US3941423 Method of and apparatus for extracting oil from oil shale
03/02/1976US3941422 Method of interconnecting wells for solution mining
03/02/1976US3941421 Apparatus for obtaining uniform gas flow through an in situ oil shale retort
03/02/1976US3941192 Method for recovering high asphaltene content petroleum using surfactants
03/02/1976US3941191 Method of consolidating unconsolidated or insufficiently consolidated formations
03/02/1976US3941189 Subsurface wellhead shield
02/1976
02/24/1976US3939927 Combined gravel packing and perforating method and apparatus for use in well bores
02/24/1976US3939912 Method for reducing the production of water from oil wells
02/24/1976US3939910 Stuffing box and blow out preventing device for polish rods of oil well pumping units
02/17/1976US3938594 Chromic ion gelled polyacrylamide in subterranean formations
02/17/1976US3938592 Rock-exploitation method based on thermodynamic cycles utilizing in-situ energy source
02/17/1976US3938591 Intermediate fluid systems for long distance oil displacement
02/17/1976US3938590 Method for recovering viscous asphaltic or bituminous petroleum
02/17/1976US3938343 Platform structure for maritime installation
02/10/1976US3937633 Acrylamide-sodium acrylate copolymer
02/10/1976US3937283 Formation fracturing with stable foam
02/10/1976US3937281 High load self-cleaning helical spring filters
02/10/1976US3937280 Artificial lift well apparatus
01/1976
01/27/1976US3934660 Flexpower deep well drill
01/27/1976US3934658 Modular underwater well platform system
01/27/1976US3934652 Apparatus and method for cementing well liners
01/27/1976US3934651 Method of acidizing subterranean formations
01/27/1976US3934650 Recovery of natural gas during solution mining of an underground salt deposit
01/27/1976US3934649 Method for removal of methane from coalbeds
01/27/1976US3934648 Well tubing system with orienting coupling means
01/27/1976US3934647 Pipe laying system
01/27/1976US3934469 Method and steam samplers
01/20/1976US3933447 In situ combustion
01/20/1976US3933205 Hydraulic fracturing process using reverse flow
01/13/1976US3932300 Natural gas
01/13/1976US3931856 Method of heating a subterranean formation
01/13/1976US3931670 Apparatus and method for connecting two axially spaced apart pipes
01/06/1976US3930539 Method of obtaining increased production in wells
01/06/1976US3930538 Wellpoint with adjustable valve