CATIONIC VISCOELASTIC SURFACTANT WITH NON-CATIONIC CORROSION INHIBITOR AND ORGANIC ANION FOR ACIDIZING

A treatment fluid and method treating a zone of a subterranean formation penetrated by a wellbore. The treatment fluid includes: (i) water; (ii) a strong acid; (iii) a cationic viscoelastic surfactant; (iv) an anionic organic component having at least 4 carbon atoms; and (v) a non-cationic corrosion...

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Hauptverfasser: WADEKAR SUSHANT DATTARAM, PANDYA NISHA KAUSTUBH, SALGAONKAR LALIT PANDURANG, SABHAPONDIT ANUPOM
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creator WADEKAR SUSHANT DATTARAM
PANDYA NISHA KAUSTUBH
SALGAONKAR LALIT PANDURANG
SABHAPONDIT ANUPOM
description A treatment fluid and method treating a zone of a subterranean formation penetrated by a wellbore. The treatment fluid includes: (i) water; (ii) a strong acid; (iii) a cationic viscoelastic surfactant; (iv) an anionic organic component having at least 4 carbon atoms; and (v) a non-cationic corrosion inhibitor; wherein the pH of the treatment fluid is less than 0.5. Preferably, the viscosity of the treatment fluid is less than 5 cP at 40 sec-1. The method includes the steps of: (A) forming the treatment fluid; (B) introducing the treatment fluid through the wellbore into the zone; and (C) allowing time for the strong acid in the treatment fluid to spend in the formation. Preferably, as the acid spends in the subterranean formation, the viscosity of the treatment fluid increases in the well to above 5 cP. Such a treatment fluid shows good rheological properties at temperatures above 93° C. (200° F.).
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subjects ADHESIVES
CHEMISTRY
DYES
MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE
METALLURGY
MISCELLANEOUS APPLICATIONS OF MATERIALS
MISCELLANEOUS COMPOSITIONS
NATURAL RESINS
PAINTS
POLISHES
title CATIONIC VISCOELASTIC SURFACTANT WITH NON-CATIONIC CORROSION INHIBITOR AND ORGANIC ANION FOR ACIDIZING
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