SELF-DIVERTING FOAMED SYSTEM

A METHOD IS GIVEN FOR DIVERTING ACIDS IN MATRIX ACIDIZING AND ACID FRACTURING. THE ACIDS ARE DIVERTED WITH A DIVERTING AGENT THAT IS AN ENERGIZED OR FOAMED ACIDIC VISCOELASTIC SURFACTANT SYSTEM THAT CONTAINS A VISCOELASTIC SURFACTANT THAT GELS AND INCREASES IN VISCOSITY WHEN THE ACID IN THE FOAMED A...

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Hauptverfasser:	MARK BRADY, CHRISTOPHER FREDD, PIA-ANGELA FRANCINI, KENG S. CHAN
Format:	Patent
Sprache:	eng
Schlagworte:	ADHESIVES CHEMISTRY DYES EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FIXED CONSTRUCTIONS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS 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 TECHNICAL SUBJECTS COVERED BY FORMER USPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ARTCOLLECTIONS [XRACs] AND DIGESTS
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Beschreibung
Zusammenfassung:	A METHOD IS GIVEN FOR DIVERTING ACIDS IN MATRIX ACIDIZING AND ACID FRACTURING. THE ACIDS ARE DIVERTED WITH A DIVERTING AGENT THAT IS AN ENERGIZED OR FOAMED ACIDIC VISCOELASTIC SURFACTANT SYSTEM THAT CONTAINS A VISCOELASTIC SURFACTANT THAT GELS AND INCREASES IN VISCOSITY WHEN THE ACID IN THE FOAMED ACIDIC VISCOELASTIC SURFACTANT SYSTEM IS SPENT. THE METHOD PROVIDES A SYNERGISTIC COMBINATION OF THE DIVERTING CAPABILITIES OF FOAMS AND THE DIVERTING CAPABILITIES OF VISCOELASTIC GEL SYSTEMS. THE RESISTANCE TO FLOW OF THE GELLED FOAMED VISCOELASTIC SURFACTANT SYSTEM IS GREATER THAN EXPECTED FROM A FOAM OR A VISCOELASTIC GEL SYSTEM ALONE.