| 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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| 07/31/1979 | CA1059662A1 Petroleum production by steam injection |
| 07/31/1979 | CA1059539A1 Method and means for cavity mining minerals from a subsurface deposit |
| 07/31/1979 | CA1059433A1 Method for increasing the oil recovery from active water drive reservoirs |
| 07/31/1979 | CA1059432A1 Hydrocarbon recovery |
| 07/31/1979 | CA1059431A1 Recovery of petroleum |
| 07/31/1979 | CA1059328A1 Method and apparatus for making subsea pipe connections |
| 07/26/1979 | WO1979000467A1 Process for producing gene products of plasmid dna |
| 07/25/1979 | EP0003062A2 Plasmids, bacteria and gene products of plasmid DNA, processes for preparing them |
| 07/24/1979 | US4161983 High conformance oil recovery process |
| 07/24/1979 | US4161982 High conformance enhanced oil recovery process |
| 07/24/1979 | US4161981 Method for recovering hydrocarbons |
| 07/24/1979 | CA1059022A1 Apparatus and method for connecting a tubing string to downhole well equipment |
| 07/17/1979 | US4161367 Method and apparatus for completing diverless subsea flowline connections |
| 07/17/1979 | US4161218 High conformance enhanced oil recovery process |
| 07/17/1979 | US4161217 Hot water foam oil production process |
| 07/17/1979 | US4161216 Mechanical latch with hydraulic locking mechanism |
| 07/17/1979 | US4161047 Process for recovery of hydrocarbons |
| 07/17/1979 | CA1058557A1 Method and apparatus for secondary recovery of oil |
| 07/17/1979 | CA1058516A1 Method for in situ heat processing of hydrocarbonaceous formations |
| 07/11/1979 | EP0002877A2 Method for the removal of methane |
| 07/10/1979 | US4160652 Separation of gas flow from liquid flow |
| 07/10/1979 | US4160622 Portable water sampling apparatus |
| 07/10/1979 | US4160483 Method of treating a well using fluoboric acid to clean a propped fracture |
| 07/10/1979 | US4160482 Ball sealer diversion of matrix rate treatments of a well |
| 07/10/1979 | US4160481 Method for recovering subsurface earth substances |
| 07/10/1979 | US4160480 High conformance oil recovery process |
| 07/10/1979 | US4160412 Earth fracturing apparatus |
| 07/10/1979 | CA1058070A1 Oil production processes and apparatus |
| 07/03/1979 | CA1057650A1 Mechanical wave heating of bituminous sands |
| 07/03/1979 | CA1057649A1 Formation fracturing with foam having greater proppant concentration |
| 06/26/1979 | US4159180 Ground fed blender |
| 06/26/1979 | US4159037 High conformance oil recovery process |
| 06/26/1979 | US4159036 High pressure cleaning and pumping method and apparatus for oil well production |
| 06/26/1979 | US4158963 Process for determining the location and/or extent of rock cavities |
| 06/26/1979 | CA1057190A1 Method of recovering viscous petroleum from an underground formation |
| 06/26/1979 | CA1057189A2 Formation fracturing with foam having greater proppant concentration |
| 06/26/1979 | CA1057067A1 Coupling between an above sea-level platform and a below-water foundation |
| 06/26/1979 | CA1057039A1 Viscosity-stabilized aqueous solutions |
| 06/26/1979 | CA1057038A1 Fault filler for wells drilled in various geological formations__ |
| 06/19/1979 | US4158467 Process for recovering shale oil |
| 06/19/1979 | US4158388 Method of and apparatus for squeeze cementing in boreholes |
| 06/19/1979 | CA1056720A1 Thermal recovery method |
| 06/19/1979 | CA1056719A1 Thermal process for recovering viscous petroleum |
| 06/19/1979 | CA1056718A1 Recovery of bitumens by imbibition flooding |
| 06/19/1979 | CA1056590A1 Formation fracturing with stable foam |
| 06/13/1979 | EP0002306A1 Process for transformation of coal in situ, particularly gazification |
| 06/13/1979 | EP0002294A1 A plastics well pipe |
| 06/12/1979 | US4157847 Method and apparatus for utilizing accumulated underground water in the mining of subterranean sulphur |
| 06/12/1979 | US4157732 Method and apparatus for well completion |
| 06/12/1979 | US4157730 System for the storage and recovery of heat in a captive layer |
| 06/12/1979 | CA1056454A1 Tracing flow of petroleum in underground reservoirs |
| 06/12/1979 | CA1056303A1 Method of underground gasification of a coal bed |
| 06/12/1979 | CA1056302A1 Recovery of hydrocarbons from coal |
| 06/12/1979 | CA1056301A1 Producing heavy oil from tar sands |
| 06/12/1979 | CA1056300A1 Micellar flooding process for recovering oil from petroleum reservoirs |
| 06/05/1979 | USRE30019 Production of hydrocarbons from underground formations |
| 06/05/1979 | US4157528 Wellbore pressure transducer |
| 06/05/1979 | US4157117 Oil well tube draining method and means |
| 06/05/1979 | US4157116 Process for reducing fluid flow to and from a zone adjacent a hydrocarbon producing formation |
| 06/05/1979 | CA1055842A1 Rotation release two-way well casing hanger |
| 06/05/1979 | CA1055840A1 Fracturing of pillars for enhancing recovery of oil from in-situ oil shale retort |
| 06/05/1979 | CA1055839A1 Method of enhancing recovery of oil from pillars adjacent in situ oil shale retort |
| 05/29/1979 | US4156464 Enhanced oil recovery by foaming |
| 05/29/1979 | US4156463 Injecting steam and acyclic amine to separate from mineral surfaces |
| 05/29/1979 | US4156462 Injecting steam, then carbon monoxide and hydrogen to displace; drive fluid containing sulfated, alkoxylated nitrophenol to reduce surface tension |
| 05/29/1979 | US4156461 Reacting with oxygen |
| 05/29/1979 | US4156421 Method and apparatus for producing thermal vapor stream |
| 05/29/1979 | CA1055392A Method for tertiary extraction of petroleum by flooding with hot water or with alkaline, water-soluble substances, in deposits |
| 05/29/1979 | CA1055391A Fluid carrier recovery system |
| 05/29/1979 | CA1055390A Method and apparatus for gravel packing wells |
| 05/29/1979 | CA1055242A1 Fracturing subterranean formation |
| 05/22/1979 | US4155982 In situ carbonate leaching and recovery of uranium from ore deposits |
| 05/22/1979 | US4155672 Protective guide cage construction for subsea well operations |
| 05/22/1979 | CA1054929A1 In situ recovery of shale oil |
| 05/22/1979 | CA1054928A1 Thermal recovery of hydrocarbons from tar sands |
| 05/22/1979 | CA1054927A1 Method of extracting oil |
| 05/22/1979 | CA1054925A1 Thermal recovery of hydrocarbons from tar sands |
| 05/22/1979 | CA1054924A2 Methods and steam samplers |
| 05/22/1979 | CA1054910A1 Method of determining the relation between fractional flow and saturation of oil |
| 05/22/1979 | CA1054783A1 Secondary recovery methods |
| 05/15/1979 | US4154300 Method of locating extrema in multicomponent three phase systems |
| 05/15/1979 | US4154299 Gas lift well with improvement |
| 05/15/1979 | US4154298 Well tubing hanger |
| 05/15/1979 | US4154297 Lift gas heat exchanger |
| 05/15/1979 | CA1054359A2 Clay-free thixotropic wellbore fluid |
| 05/15/1979 | CA1054358A1 Sand control method employing asphaltenes |
| 05/15/1979 | CA1054357A1 Method and composition for treating a well to prevent the formation of sulfur and scale depositions |
| 05/08/1979 | US4153537 Cryothermal manipulation of petroleum |
| 05/08/1979 | US4153118 Method of and apparatus for perforating boreholes |
| 05/08/1979 | US4153113 Subsea drill-thru manifold center |
| 05/08/1979 | US4153110 Ignition of fragmented oil shale below a sill pillar in an in situ oil shale retort |
| 05/03/1979 | WO1979000224A1 Method of underground gasification of combustible minerals |
| 05/01/1979 | US4152088 Off-shore oil field production equipment |
| 05/01/1979 | US4151877 Determining the locus of a processing zone in a retort through channels |
| 05/01/1979 | US4151857 Gas lift valve |
| 05/01/1979 | CA1053588A1 Cleaning and pumping apparatus for oil well production |
| 05/01/1979 | CA1053575A1 Junction housing for use in undersea oil wells |
| 05/01/1979 | CA1053573A1 Method for recovering viscous petroleum from unconsolidated mineral formations |
| 05/01/1979 | CA1053572A1 Process for recovery of carbonaceous materials from subterranean deposits by in situ processing |
| 04/24/1979 | US4151260 Hydrogen sulfide abatement in geothermal steam |