Foaming formulations for enhanced oil recovery

A composition C, suitable as foaming composition, which comprises, within an aqueous medium M:

• at least one ethoxylated alkylamine;
• and
• at least one amphoteric or zwitterionic surfactant
• wherein the ethoxylated alkylamine has formula (I) below:
• where:
• n is a non-zero number between 1 and 12;
• m is a non-zero number between 1 and 12, the sum n+m remaining below 20;
• [A-] is a group comprising an alkyl group, selected from:
• an alkyl group R— comprising from 8 to 22 carbon atoms;
• or
• an ethoxylated alkylamine group of formula:
• where:
• R′— is an alkyl group, comprising from 8 to 22 carbon atoms;
• —R″— is an alkenyl group, a group —(CH2)q—
• where q is a whole number between 2 and 5
• p is a non-zero number, between 1 and 10
• with the sum n+m+p remaining below 20.