| 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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| 02/28/1984 | US4434054 Filter for separating discrete solid elements from a fluid stream |
| 02/28/1984 | US4433728 Adding aqueous caustic solution containing a polyvalent cation |
| 02/28/1984 | US4433727 Oil recovery process |
| 02/28/1984 | US4433724 In an oil well |
| 02/28/1984 | CA1162843A1 Bar actuated vent assembly and perforating gun |
| 02/21/1984 | US4432668 Foot joint for connecting a movable service tower of an off-shore station to a foundation |
| 02/21/1984 | US4432416 Well flow control apparatus |
| 02/15/1984 | EP0100627A1 Helical gear pump |
| 02/14/1984 | US4432064 Apparatus for monitoring a plurality of operations |
| 02/14/1984 | US4431778 Process for secondary recovery |
| 02/14/1984 | US4431734 Using a polysaccharase and protease to remove microgels and cell framents; synergistic |
| 02/14/1984 | US4431534 Liquid-liquid separation apparatus |
| 02/14/1984 | US4431069 Method and apparatus for forming and using a bore hole |
| 02/14/1984 | US4431057 Process and device for injecting a liquid agent used for treating a geological formation in the vicinity of a well bore traversing this formation |
| 02/14/1984 | US4431056 For recovering viscous oil from a subterranean formation |
| 02/14/1984 | US4431055 Method for selective plugging of depleted channels or zones in in situ oil shale retorts |
| 02/08/1984 | EP0100230A2 Earth Boring Apparatus |
| 02/07/1984 | US4429745 Alternating processurization and depressurization by fluid injection |
| 02/07/1984 | US4429744 Injection of steam and hydrocarbon |
| 02/07/1984 | US4429743 Well servicing system employing sonic energy transmitted down the pipe string |
| 02/07/1984 | US4429740 Combination gas producing and waste-water disposal well |
| 02/07/1984 | EP0083646A4 Self-inverting water-in-oil emulsions of water-soluble polymers and a process for preparing the emulsions. |
| 02/07/1984 | CA1161748A1 Ball switch device and method |
| 02/07/1984 | CA1161697A1 Leaky pipe-fitting sensor and control system |
| 02/01/1984 | EP0099813A2 Method for the treatment of combustible gas, and installation for carrying out the method |
| 01/31/1984 | US4428841 Removal of particles, oil, and gas from produced water |
| 01/31/1984 | US4428839 Separator for oil, gas and water |
| 01/31/1984 | US4428440 In a well perforating apparatus |
| 01/31/1984 | US4428431 Perforable screen device for subterranean wells and method of producing multi-lobe zones |
| 01/31/1984 | US4428428 Tool and method for gravel packing a well |
| 01/31/1984 | US4428427 Consolidatable gravel pack method |
| 01/31/1984 | US4428425 Single pass filtration of oil or gas well completion fluids |
| 01/31/1984 | US4428424 Method of improving oil/water production ratio |
| 01/31/1984 | US4428423 Well screen end fitting assembly and method of making same |
| 01/31/1984 | CA1161359A1 Method for underground gasification of fossil fuel |
| 01/31/1984 | CA1161358A1 Maximizing fracture extension in massive hydraulic fracturing |
| 01/31/1984 | CA1161259A1 Method and apparatus for the recovery of power from lhv gas |
| 01/24/1984 | US4427528 Slurrying with a trahalose lipid and water |
| 01/24/1984 | US4427236 Injection of leaching agent, foaming agent, and oxidant |
| 01/24/1984 | US4427235 Injection of lixiviant containing leaching and oxidizing agent, recovering solution, then reduction in conventration of oxidizer |
| 01/24/1984 | US4427072 Method and apparatus for deep underwater well drilling and completion |
| 01/24/1984 | US4427068 Sintered spherical pellets containing clay as a major component useful for gas and oil well proppants |
| 01/24/1984 | US4427067 Water and miscible fluid flooding method having good vertical conformance for recovering oil |
| 01/24/1984 | US4427066 Oil recovery method |
| 01/24/1984 | CA1160951A2 Submergible pump installation |
| 01/18/1984 | EP0098779A2 A single-wire selective perforation system having firing safeguards |
| 01/18/1984 | EP0098613A2 Apparatus for extending and retracting telescoping booms and pipelines |
| 01/17/1984 | US4426173 Remote alignment method and apparatus |
| 01/17/1984 | US4426104 Underwater connector apparatus |
| 01/17/1984 | US4425968 Selective water exclusion |
| 01/17/1984 | US4425967 Ignition procedure and process for in situ retorting of oil shale |
| 01/17/1984 | CA1160565A1 Cementing collar and method of operation |
| 01/10/1984 | US4425307 Hydrogen peroxide in sulfuric acid extraction of uranium ores |
| 01/10/1984 | US4425003 Single well-multiple cavity solution mining of an inclined structure |
| 01/10/1984 | US4424866 Brine of calcium chloride or bromide, fracturing and release of gas |
| 01/10/1984 | US4424864 Isolation plug |
| 01/10/1984 | US4424863 Oil recovery by waterflooding |
| 01/10/1984 | US4424862 Injection devices |
| 01/10/1984 | US4424859 Multi-channel fluid injection system |
| 01/10/1984 | US4424858 Apparatus for recovering gaseous hydrocarbons from hydrocarbon-containing solid hydrates |
| 01/10/1984 | CA1160066A1 Hull heating system for an arctic offshore production structure |
| 01/05/1984 | WO1984000054A1 De-watering pump |
| 01/05/1984 | WO1984000047A1 Method for manufacturing a backing material for drill holes |
| 01/03/1984 | US4424068 Separator and method for separation of oil, gas and water |
| 01/03/1984 | US4423982 Method and equipment for running riser pipes for mooring offshore floating platforms |
| 01/03/1984 | US4423908 Formation of an in situ oil shale retort with control of mounding |
| 01/03/1984 | US4423906 Method of forming an in situ oil shale retort |
| 01/03/1984 | US4423782 Annulus safety apparatus |
| 01/03/1984 | US4423780 Method and apparatus for fracturing hydrocarbon-bearing well formations |
| 01/03/1984 | US4423779 Oil recovery system and process |
| 01/03/1984 | US4423773 Single acting subterranean well valve assembly with conduit fluid stripping means |
| 12/28/1983 | EP0097080A1 Production system for under water deposits of fluids |
| 12/27/1983 | US4422508 Methods for pulling sucker rod strings |
| 12/27/1983 | US4422505 Method for gasifying subterranean coal deposits |
| 12/27/1983 | CA1159363A1 Well system and method |
| 12/27/1983 | CA1159361A1 Method of placing pipe into deviated boreholes |
| 12/21/1983 | EP0096650A1 Supporting column for an offshore platform, and method for its construction |
| 12/21/1983 | EP0096636A1 System for obtaining fluids from a deposit |
| 12/20/1983 | US4421438 Sliding leg tower |
| 12/20/1983 | US4421436 Tension leg platform system |
| 12/20/1983 | US4421183 Flexible drive apparatus for boring lateral bore holes from well |
| 12/20/1983 | US4421169 Protective sheath for high temperature process wells |
| 12/20/1983 | US4421167 Method of controlling displacement of propping agent in fracturing treatments |
| 12/20/1983 | US4421163 Downhole steam generator and turbopump |
| 12/20/1983 | CA1158873A1 Emergency cable gripper |
| 12/13/1983 | US4420598 Acrylamide-acrylonitrile-ethoxylated acrylic acid terpolymer thickener |
| 12/13/1983 | US4420413 Breaking crude oil emulsions |
| 12/13/1983 | US4420187 Stationary drill string rotary hydraulic mining tool and method of hydraulic mining |
| 12/13/1983 | US4420044 Flow control system |
| 12/13/1983 | US4420041 Method of using a valve in gravel packing |
| 12/13/1983 | US4420040 Ball catcher |
| 12/13/1983 | CA1158446A1 Flameless nitrogen skid unit |
| 12/13/1983 | CA1158428A1 Method of inhibiting crosslinking of aqueous xanthan gums in the presence of ferric acid |
| 12/06/1983 | US4419265 Demulsification |
| 12/06/1983 | US4418961 Method for restoring contaminants to base levels in previously leached formations |
| 12/06/1983 | US4418960 Multiple-bed solution mining of an inclined structure |
| 12/06/1983 | US4418755 Methods of inhibiting the flow of water in subterranean formations |
| 12/06/1983 | US4418754 Method and apparatus for gravel packing a zone in a well |
| 12/06/1983 | US4418753 Method of enhanced oil recovery employing nitrogen injection |
| 12/06/1983 | US4418752 Thermal oil recovery with solvent recirculation |