| 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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| 09/26/1978 | US4116130 Methods and apparatus for severing tubular members |
| 09/26/1978 | CA1039180A1 Downhole recovery system |
| 09/26/1978 | CA1039179A1 Apparatus for treating rock surrounding a wellbore |
| 09/26/1978 | CA1039178A1 Method of successively opening-out and treating productive formations |
| 09/19/1978 | US4114693 Conversion to ammonia by reaction with base |
| 09/19/1978 | US4114691 Method for controlling sand in thermal recovery of oil from tar sands |
| 09/19/1978 | US4114690 Low-temperature oxidation method for the recovery of heavy oils and bitumen |
| 09/19/1978 | US4114689 Compaction of subterranean formation |
| 09/19/1978 | US4114688 Minimizing environmental effects in production and use of coal |
| 09/19/1978 | US4114687 Systems for producing bitumen from tar sands |
| 09/19/1978 | CA1038701A1 anchoring of floating structures |
| 09/19/1978 | CA1038634A1 Subsea structure |
| 09/12/1978 | US4113314 Well perforating method for solution well mining |
| 09/12/1978 | US4113313 Recovering uranium from coal in situ |
| 09/12/1978 | US4113017 Hot effluent from partial oxidation of natural gas injected in oil recovery process |
| 09/12/1978 | US4113016 Casing perforation method and apparatus |
| 09/12/1978 | US4112745 High temperature geothermal energy system |
| 09/12/1978 | CA1038286A1 Well consolidation method |
| 09/12/1978 | CA1038152A1 Composition and method for reducing the surface tension of aqueous fluids |
| 09/05/1978 | US4111608 Gas lift system |
| 09/05/1978 | US4110988 Method for forming domes from subterranean diapiric material |
| 09/05/1978 | CA1037864A1 Pressure-balanced well service valve |
| 09/05/1978 | CA1037863A1 Oil recovery by alkaline waterflooding |
| 09/05/1978 | CA1037862A1 System and apparatus for extracting oil and the like from tar sands in situ |
| 08/29/1978 | US4110628 Solar sea power system |
| 08/29/1978 | US4110224 A quinoline solubilizer |
| 08/29/1978 | US4110057 Gas lift mandrel valve mechanism |
| 08/29/1978 | US4109964 Method for preconditioning oil shale preliminary to explosive expansion and in situ retorting thereof |
| 08/29/1978 | US4109940 Coupling apparatus |
| 08/29/1978 | US4109723 Viscous petroleum |
| 08/29/1978 | US4109722 Viscous petroleum |
| 08/29/1978 | US4109721 Method of proppant placement in hydraulic fracturing treatment |
| 08/29/1978 | US4109720 Combination solvent-noncondensible gas injection method for recovering petroleum from viscous petroleum-containing formations including tar sand deposits |
| 08/29/1978 | US4109719 Method for creating a permeable fragmented zone within a subterranean carbonaceous deposit for in situ coal gasification |
| 08/29/1978 | US4109718 Method of breaking shale oil-water emulsion |
| 08/29/1978 | US4109715 System and apparatus for extracting oil and the like from tar sands in situ |
| 08/29/1978 | US4109714 Shutdown system for high pressure well |
| 08/29/1978 | US4109713 Pumping well blow-out preventer |
| 08/22/1978 | US4108244 Injection with water to solubilize carbon dioxide and recover methane enriched natural gas |
| 08/22/1978 | US4107987 Geothermal well pump performance sensing system and monitor therefor |
| 08/22/1978 | CA1036977A1 Process for selection and separation, respectively, of substances contained in a solid carrier, to be carried into liquid or gas phase |
| 08/22/1978 | CA1036928A1 In situ solvent fractionation of bitumens contained in tar sands |
| 08/15/1978 | US4106814 Method of forming in situ oil shale retorts |
| 08/15/1978 | US4106575 Tool string and means for supporting and rotating the same |
| 08/15/1978 | US4106574 Method for establishing high permeability flow path between boreholes |
| 08/15/1978 | US4106565 Seal nipple packer |
| 08/15/1978 | US4106562 Wellhead apparatus |
| 08/08/1978 | US4105253 Carbonic acid and oxidizing agent, leach solution for uranium mining |
| 08/08/1978 | US4105252 Potential difference between injection and production wells |
| 08/08/1978 | US4105251 Dispersion of catalysts with explosives for in situ mining of carbonaceous minerals |
| 08/08/1978 | US4105073 Tubing conveyed sand consolidating method |
| 08/08/1978 | US4105072 Process for recovering carbonaceous values from post in situ oil shale retorting |
| 08/08/1978 | US4105069 Gravel pack liner assembly and selective opening sleeve positioner assembly for use therewith |
| 08/08/1978 | US4105068 Apparatus for producing oil and gas offshore |
| 08/08/1978 | US4105049 Abrasive resistant choke |
| 08/01/1978 | US4103963 Sodium hexametaphosphate |
| 07/25/1978 | US4102401 Well treatment fluid diversion with low density ball sealers |
| 07/25/1978 | US4102399 Consolidated sand control pack |
| 07/25/1978 | US4102398 Method of forming gravel packs |
| 07/25/1978 | US4102397 Sealing an underground coal deposit for in situ production |
| 07/25/1978 | US4102396 Determining residual oil saturation following flooding |
| 07/25/1978 | US4102395 Protected well screen |
| 07/25/1978 | US4102394 Control unit for oil wells |
| 07/25/1978 | US4102146 Method of and apparatus for handling hose underwater |
| 07/18/1978 | US4101172 In-situ methods of extracting bitumen values from oil-sand deposits |
| 07/18/1978 | US4100978 Technique for disarming and arming electrically fireable explosive well tool |
| 07/18/1978 | US4100967 System for decreasing resistance to flow of crude oil up from a well or through a pipeline |
| 07/18/1978 | US4100939 Time cycle actuator |
| 07/18/1978 | US4100754 Method and apparatus for installing pipes in off-shore locations |
| 07/18/1978 | US4100753 Marine structure with riser conductor and pipeline connection |
| 07/11/1978 | US4099783 Method for thermoshaft oil production |
| 07/11/1978 | US4099571 Down hold packing gland and method for long stroke pumper |
| 07/11/1978 | US4099570 Oil production processes and apparatus |
| 07/11/1978 | US4099568 Injection of steam and non-oxidizing gas |
| 07/11/1978 | US4099567 Generating medium BTU gas from coal in situ |
| 07/11/1978 | US4099566 Vicous oil recovery method |
| 07/11/1978 | CA1034487A1 Method for branching a submarine well to a steel tube discharge conduit |
| 07/04/1978 | US4098340 Method of and apparatus for cleaning down well valves of well pumps in situ |
| 07/04/1978 | US4098339 Utilization of low BTU natural gas |
| 07/04/1978 | US4098336 Oil recovery process utilizing air and superheated steam |
| 07/04/1978 | US4098334 Dual string tubing hanger |
| 07/04/1978 | US4098333 Offshore wells |
| 07/04/1978 | US4098091 Riser guide member |
| 07/04/1978 | CA1034037A1 Method of joining a central station to a well system and transfer ducts |
| 06/27/1978 | US4096913 Hydraulically set liner hanger and running tool with backup mechanical setting means |
| 06/27/1978 | US4096912 Methods for minimizing plastic flow of oil shale during in situ retorting |
| 06/27/1978 | US4096911 Channel base well screen |
| 06/20/1978 | US4096175 Extraction method |
| 06/20/1978 | US4095650 Method for increasing the calorific value of gas produced by the in situ combustion of coal |
| 06/20/1978 | US4095649 Reentry system for subsea well apparatus |
| 06/20/1978 | US4095437 Submersible pipe installation systems |
| 06/06/1978 | US4093310 Sealing an underground coal deposit for in situ production |
| 06/06/1978 | US4093030 Run-in and tie back apparatus |
| 06/06/1978 | US4093029 Reforming, reduction |
| 06/06/1978 | US4093028 Methods of use of cementitious materials and sonic or energy-carrying waves within subsurface formations |
| 06/06/1978 | US4093027 Method of assisting the recovery of oil using steam |
| 06/06/1978 | US4093026 Removal of sulfur dioxide from process gas using treated oil shale and water |
| 06/06/1978 | US4093025 Methods of fluidized production of coal in situ |
| 05/30/1978 | US4092052 Converting underground coal fires into commercial products |
| 05/30/1978 | US4092045 Subterranean hydraulic mining method |