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Patentes

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Patente citante Fecha de presentación Fecha de emisión Cesionario original Título
US402636114 Jun 197631 May 1977Shell Oil CompanyTreating wells with a temporarily thickening cellulose ether solution
US412289614 Oct 197731 Oct 1978Shell Oil CompanyAcidizing carbonate reservoirs with chlorocarboxylic acid salt solutions
US42190836 Abr 197926 Ago 1980Shell Oil CompanyChemical process for backsurging fluid through well casing perforations
US435239620 Nov 19805 Oct 1982Getty Oil CompanyMethod for selective plugging using resin emulsions
US448726522 Dic 198111 Dic 1984Union Oil Company of CaliforniaAcidizing a subterranean reservoir
US45044009 Ene 198412 Mar 1985The Dow Chemical CompanyFluid and method for placing gravel packs
US456794613 Jun 19844 Feb 1986Union Oil Company of CaliforniaIncreasing the permeability of a subterranean reservoir
US461799422 Nov 198521 Oct 1986Shell Oil CompanyDetermining residual oil saturation by injecting CO.sub.2 and base generating reactant
US49571638 Ene 199018 Sep 1990Texaco Inc.Method of stabilizing polymer solutions in a subterranean formation
US508205616 Oct 199021 Ene 1992Marathon Oil CompanyIn situ reversible crosslinked polymer gel used in hydrocarbon recovery applications
US688360820 Ago 200326 Abr 2005Schlumberger Technology CorporationGravel packing method
US717859413 Jul 200420 Feb 2007M-I L.L.C.Method for using reversible phase oil-based drilling fluid
US737397818 Dic 200320 May 2008ExxonMobil Upstream Research CompanyMethod for drilling and completing wells
US76614769 Nov 200716 Feb 2010ExxonMobil Upstream Research CompanyGravel packing methods
US797164212 Feb 20105 Jul 2011ExxonMobil Upstream Research CompanyGravel packing methods