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