MICROEMULSIONI UTILIZZABILI PER IL RECUPERO DI PETROLIO IN GIACIMENTI AD ELEVATA TEMPERATURA CONTENENTI ACQUA FORTEMENTE SALINA

A microemulsion comprises a mixture of water containing an excess of 60 g/l of mono- and divalent salts, a hydrocarbon, an amphoteric surfactant of the formula: wherein m is a whole number ranging from 1 to 5, inclusive, n is a whole number ranging from 1 to 22 inclusive, X is a member selected from...

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Bibliographische Detailangaben
Hauptverfasser:	GRANGETTE HENRI, COSTE JEAN FRANCOIS
Format:	Patent
Sprache:	ita
Schlagworte:	ADHESIVES CHEMISTRY DYES EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FIXED CONSTRUCTIONS MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE METALLURGY MINING MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS PAINTS POLISHES
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Beschreibung
Zusammenfassung:	A microemulsion comprises a mixture of water containing an excess of 60 g/l of mono- and divalent salts, a hydrocarbon, an amphoteric surfactant of the formula: wherein m is a whole number ranging from 1 to 5, inclusive, n is a whole number ranging from 1 to 22 inclusive, X is a member selected from the group consisting of COO, SO3 and a sulphonated ethylene polyoxide, and R1 and R2 are hydrocarbon groups containing from 1 to 22 carbon atoms and a co- surfactant comprising at least one C1 to C10 alcohol. This microemulsion may be used for recovering petroleum in beds containing water of high salinity.