| 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) |
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| 04/24/1979 | US4150722 Determining the locus of a retorting zone in an oil shale retort by rate of shale oil production |
| 04/24/1979 | US4150721 Gas well controller system |
| 04/19/1979 | WO1979000201A1 A process for the recovery of organic gases from ground,bedrock or bottom sediments in lakes |
| 04/17/1979 | US4149829 Gas lift valve and mandrel combination with improvement of the screening for said valve |
| 04/17/1979 | US4149752 Controlled rate of combustion |
| 04/17/1979 | US4149598 Recovery of gas from water drive gas reservoirs |
| 04/17/1979 | US4149597 Thermal sand cracking of crude oils to form coke and hydrocarbons, igniting coke in air to heat sand |
| 04/17/1979 | US4149596 Method for recovering gas from solution in aquifer waters |
| 04/17/1979 | US4149595 In situ oil shale retort with variations in surface area corresponding to kerogen content of formation within retort site |
| 04/17/1979 | US4149592 Useful in oil shale retorts |
| 04/17/1979 | CA1052557A1 Self-thinning and neutralizing thickened aqueous liquid |
| 04/17/1979 | CA1052556A1 Hydraulic fracturing fluid |
| 04/17/1979 | CA1052555A1 Increasing the multivalent cation tolerance of aqueous anionic surfactant systems |
| 04/10/1979 | US4148736 Oil recovery process using viscosified surfactant solutions |
| 04/10/1979 | US4148735 Separator for use in boreholes of limited diameter |
| 04/10/1979 | US4148529 Doping a retort to determine the locus of a processing zone |
| 04/10/1979 | US4148359 Pressure-balanced oil recovery process for water productive oil shale |
| 04/10/1979 | US4148358 Controlling air pollution resulting from combustion of oil shale, in situ |
| 04/10/1979 | CA1052459A1 Oil well pumpoff control system |
| 04/10/1979 | CA1052264A1 Oil recovery process |
| 04/10/1979 | CA1052263A1 Preferential solution mining process |
| 04/10/1979 | CA1052107A1 Riser for an offshore platform |
| 04/10/1979 | CA1052085A1 Secondary and tertiary oil recovery process |
| 04/03/1979 | US4147637 Oil recovery by increasing the injectivity index of micellar systems containing crude oil sulfonates |
| 04/03/1979 | US4147389 Method for establishing a combustion zone in an in situ oil shale retort |
| 04/03/1979 | US4147388 Method for in situ recovery of liquid and gaseous products from oil shale deposits |
| 04/03/1979 | US4147221 Riser set-aside system |
| 04/03/1979 | US4147213 Combustion air injection well |
| 04/03/1979 | US4147211 Enhanced oil recovery process utilizing a plurality of wells |
| 04/03/1979 | US4147036 Scissor well template |
| 04/03/1979 | CA1051675A1 Submersible pipe installation systems |
| 04/03/1979 | CA1051649A1 Method for stimulating well production |
| 03/27/1979 | US4146272 Explosive placement for explosive expansion toward spaced apart voids |
| 03/27/1979 | US4146095 Method and apparatus for nuclear heating of oil-bearing formations |
| 03/27/1979 | US4145987 Flare buoy |
| 03/27/1979 | CA1051342A1 Method for recovering viscous petroleum |
| 03/27/1979 | CA1051341A1 Combined multiple solvent and thermal heavy oil recovery method |
| 03/27/1979 | CA1051340A1 Selectively plugging water zones |
| 03/20/1979 | US4145161 Speed control |
| 03/20/1979 | US4144935 Apparatus and method for in situ heat processing of hydrocarbonaceous formations |
| 03/20/1979 | CA1050743A1 Well treating compositions containing polymer plugging or fluid loss reducing agents |
| 03/13/1979 | US4143917 In-situ retorting of oil shale with in-situ formed arches |
| 03/13/1979 | US4143715 Method for bringing a well under control |
| 03/13/1979 | US4143714 Method for monitoring underground fluid movement for improving recovery of oil or bitumen |
| 03/13/1979 | US4143712 Apparatus for treating or completing wells |
| 03/13/1979 | CA1050258A1 Method and compositions for fracturing well formations |
| 03/06/1979 | US4142820 Pivotal connecting device for pivotally connecting an off-shore articulated column structure to a sea bottom |
| 03/06/1979 | US4142739 Pipe connector apparatus having gripping and sealing means |
| 03/06/1979 | CA1049926A1 Flooding with micellar dispersions having connate water compatibility |
| 02/27/1979 | US4141417 Enhanced oil recovery |
| 02/27/1979 | US4141415 Method of recovering hydrocarbons by improving the vertical conformance in heavy oil formations |
| 02/27/1979 | US4141221 Means for fitting packing between two components, such as pipes, capable of relative movements, in particular coaxial movements |
| 02/20/1979 | US4140346 Cavity mining minerals from subsurface deposit |
| 02/20/1979 | US4140343 Gas withdrawal from an in situ oil shale retort |
| 02/20/1979 | US4140188 High density jet perforating casing gun |
| 02/20/1979 | US4140184 Using geothermal energy |
| 02/20/1979 | US4140182 Method of extracting oil |
| 02/20/1979 | US4140181 Two-stage removal of sulfur dioxide from process gas using treated oil shale |
| 02/20/1979 | US4140180 Method for in situ heat processing of hydrocarbonaceous formations |
| 02/20/1979 | US4140179 In situ radio frequency selective heating process |
| 02/20/1979 | CA1048926A1 Apparatus for recovery of hydrocarbons by in situ thermal extraction |
| 02/20/1979 | CA1048925A1 Explosively actuated well tool having improved disarmed configuration |
| 02/20/1979 | CA1048924A1 Safe-handling arming method and apparatus for perforating guns |
| 02/13/1979 | US4139334 Cable string for downhole pumps |
| 02/13/1979 | US4139332 Pumping rate control method and apparatus for internal combustion engine driven pumps |
| 02/13/1979 | US4139322 Equipment for removing and refitting resilient packing in a cardan joint |
| 02/13/1979 | US4139060 Selective wellbore isolation using buoyant ball sealers |
| 02/13/1979 | US4139059 Well casing hanger assembly |
| 02/13/1979 | US4139058 Hydraulic stop and orienting tool for well system installation |
| 02/13/1979 | CA1048431A1 Thermal recovery of hydrocarbon from tar sands |
| 02/13/1979 | CA1048404A1 Reservoir treatment by injecting mixture of co2 and hydrocarbon gas |
| 02/06/1979 | US4138148 Split-ring riser latch |
| 02/06/1979 | US4138147 Coupling device |
| 02/06/1979 | US4137971 Method of consolidating a subterranean formation |
| 02/06/1979 | US4137968 Ignition system for an automatic burner for in situ combustion for enhanced thermal recovery of hydrocarbons from a well |
| 02/06/1979 | US4137722 Coupling between an above sea-level platform and a below-water foundation |
| 01/30/1979 | US4136738 Enhanced recovery of oil from a dipping subterranean oil-bearing reservoir using light hydrocarbon and carbon dioxide |
| 01/30/1979 | US4136737 Method for automatically initiating in situ combustion for enhanced thermal recovery of hydrocarbons from a well |
| 01/30/1979 | CA1122896B Combined fracturing process for stimulation of oil and gas wells |
| 01/30/1979 | CA1047396A1 Method and apparatus for producing fluid by varying current flow through subterranean source formation |
| 01/30/1979 | CA1047394A1 Oil recovery by waterflooding employing multi-component surfactant systems |
| 01/30/1979 | CA1047393A1 Combined fracturing process for stimulation of oil and gas wells |
| 01/23/1979 | US4135861 Jet pump with ceramic venturi |
| 01/23/1979 | US4135579 In situ processing of organic ore bodies |
| 01/23/1979 | US4135578 Method of preparing a wet coal seam for production in situ |
| 01/23/1979 | CA1046932A1 Well flow control apparatus and method |
| 01/16/1979 | US4134619 Subterranean mining |
| 01/16/1979 | US4134618 Restoration of a leached underground reservoir |
| 01/16/1979 | US4134463 Air lift system for large diameter borehole drilling |
| 01/16/1979 | US4134453 Method and apparatus for perforating and slotting well flow conductors |
| 01/16/1979 | CA1046402A1 Retorting of oil shale |
| 01/16/1979 | CA1046258A1 Microemulsion flooding process comprising alkyl xylene sulfonates |
| 01/09/1979 | US4134024 Method and apparatus for generating electricity from the flow of fluid through a well |
| 01/09/1979 | US4133768 Flow choke filter for oil and gas wells |
| 01/09/1979 | US4133580 Isolation of in situ oil shale retorts |
| 01/09/1979 | US4133395 Earth boring assembly with drag pipe |
| 01/09/1979 | US4133384 Steam flooding hydrocarbon recovery process |
| 01/09/1979 | US4133382 Recovery of petroleum from viscous petroleum-containing formations including tar sands |
| 01/09/1979 | US4133381 Contacting treated oil shale with carbon dioxide to inhibit leaching |
| 01/09/1979 | US4133380 Establishing a combustion zone below a sill pillar in an in situ oil shale retort |