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Brevets

Référencé par

Brevet citant Date de dépôt Date de délivrance Cessionnaire d'origine Titre
US404359717 févr. 197623 août 1977Occidental Oil Shale, Inc.Multiple level preparation of oil shale retort
US404359820 févr. 197623 août 1977Occidental Oil Shale, Inc.Multiple zone preparation of oil shale retort
US407235124 janv. 19777 févr. 1978Radial mining method
US445248920 sept. 19825 juin 1984Methane Drainage VenturesMultiple level methane drainage shaft method
US461185511 mai 198416 sept. 1986Methane Drainage VenturesMultiple level methane drainage method
US469005827 févr. 19871 sept. 1987C-I-L Inc.Smooth wall blasting in rock
US493853622 nov. 19893 juil. 1990Conic mass caving structure and method
US694203011 févr. 200413 sept. 2005CDX Gas, LLCThree-dimensional well system for accessing subterranean zones
US696429820 janv. 200415 nov. 2005CDX Gas, LLCMethod and system for accessing subterranean deposits from the surface
US69643088 oct. 200215 nov. 2005CDX Gas, LLCMethod of drilling lateral wellbores from a slant well without utilizing a whipstock
US697653315 août 200320 déc. 2005CDX Gas, LLCMethod and system for accessing subterranean deposits from the surface
US69863882 avr. 200317 janv. 2006CDX Gas, LLCMethod and system for accessing a subterranean zone from a limited surface area
US699104712 juil. 200231 janv. 2006CDX Gas, LLCWellbore sealing system and method
US699104812 juil. 200231 janv. 2006CDX Gas, LLCWellbore plug system and method
US702513712 sept. 200211 avr. 2006CDX Gas, LLCThree-dimensional well system for accessing subterranean zones
US702515418 déc. 200211 avr. 2006CDX Gas, LLCMethod and system for circulating fluid in a well system
US704804930 oct. 200123 mai 2006CDX Gas, LLCSlant entry well system and method
US707359512 sept. 200211 juil. 2006CDX Gas, LLCMethod and system for controlling pressure in a dual well system
US709000914 févr. 200515 août 2006CDX Gas, LLCThree-dimensional well system for accessing subterranean zones
US710068717 nov. 20035 sept. 2006CDX Gas, LLCMulti-purpose well bores and method for accessing a subterranean zone from the surface
US71344945 juin 200314 nov. 2006CDX Gas, LLCMethod and system for recirculating fluid in a well system
US720739530 janv. 200424 avr. 2007CDX Gas, LLCMethod and system for testing a partially formed hydrocarbon well for evaluation and well planning refinement
US722267027 févr. 200429 mai 2007CDX Gas, LLCSystem and method for multiple wells from a common surface location
US726404821 avr. 20034 sept. 2007CDX Gas, LLCSlot cavity
US73605958 mai 200222 avr. 2008CDX GAS, LLCMethod and system for underground treatment of materials
US757177131 mai 200511 août 2009CDX Gas, LLCCavity well system