Fluro-inorganics for inhibiting or removing silica or metal silicate deposits

The present invention generally relates to methods for removing and inhibiting deposits, reducing the pH of aqueous mixtures, and increasing recovery of crude oil from subterranean formations, the methods comprising contacting an acid composition with a liquid that is in contact with a metal surface...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	Gill, Jasbir S, Batton, Carol B, Hoots, John E, Rodman, David, Miller, Thomas M, Weberski, Michael Patrick, Godfrey, Martin Ray, Sommese, Anthony G
Format:	Patent
Sprache:	eng
Schlagworte:	ADHESIVES CHEMISTRY DYES MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS PAINTS POLISHES
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Beschreibung
Zusammenfassung:	The present invention generally relates to methods for removing and inhibiting deposits, reducing the pH of aqueous mixtures, and increasing recovery of crude oil from subterranean formations, the methods comprising contacting an acid composition with a liquid that is in contact with a metal surface or with a well or formation. In particular, the present invention relates to the use of an an acid composition comprising nitrogen base salts having a fluoro-inorganic borate or phosphate anion within methods of increasing recovery of crude oil from a subterranean hydrocarbon containing formation and methods of removing inorganic or organic deposit from the internal surface of a well.