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Retarded acid systems, emulsions, and methods for using in acidizing carbonate formations
In one embodiment, a retarded acid system comprises an aqueous acid and a retarding surfactant. The aqueous acid may comprise from 5 wt. % to 25 wt. % of a strong acid, that is, an acid having a Ka greater than or equal to 0.01. The aqueous acid may further comprise from 75 wt. % to 95 wt. % water. The retarding surfactant may have the general chemical formula R—(OC2H4)X—OH where R is a hydrocarbon having from 11 to 15 carbon atoms and x is an integer from 6 to 10. The retarding surfactant may have a hydrophilic-lipophilic balance from 8 to 16.
Retarded acid systems, emulsions, and methods for using in acidizing carbonate formations
In one embodiment, a retarded acid system comprises an aqueous acid and a retarding surfactant. The aqueous acid may comprise from 5 wt. % to 25 wt. % of a strong acid, that is, an acid having a Ka greater than or equal to 0.01. The aqueous acid may further comprise from 75 wt. % to 95 wt. % water. The retarding surfactant may have the general chemical formula R—(OC2H4)X—OH where R is a hydrocarbon having from 11 to 15 carbon atoms and x is an integer from 6 to 10. The retarding surfactant may have a hydrophilic-lipophilic balance from 8 to 16.
Retarded acid systems, emulsions, and methods for using in acidizing carbonate formations
AL-YAMI ABDULLAH (Autor:in) / WAGLE VIKRANT (Autor:in) / SAFRAN ALI (Autor:in)
03.11.2020
Patent
Elektronische Ressource
Englisch
IPC:
C09K
Materialien für Anwendungen, soweit nicht anderweitig vorgesehen
,
MATERIALS FOR APPLICATIONS NOT OTHERWISE PROVIDED FOR
/
C04B
Kalk
,
LIME
/
C10M
LUBRICATING COMPOSITIONS
,
Schmiermittelzusammensetzungen
/
C10N
Index-Schema nur im Zusammenhang mit Unterklasse C10M zu benutzen
,
INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M
/
E21B
EARTH OR ROCK DRILLING
,
Erd- oder Gesteinsbohren
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