Foaming oil preparation and its use

A foaming oil composition comprising at least a surfactant mixture and an oil component, characterized in that the surfactant mixture comprises (a) an anionic or zwitterionic surfactant;

• (b) a nonionic surfactant and (c) at least one ethoxylated alkyl phosphate ester component;
• wherein said ethoxylated alkyl phosphate ester is selected from one of the following structures:
• where R7 is chosen from the group consisting of unbranched and branched, saturated and unsaturated alkyl groups having from 8 to 24 carbon atoms;
• R8 and R9 are in each case and independently of one another chosen from the alkyl group consisting of H and unbranched and branched, saturated and unsaturated groups having from 8 to 24 carbon atoms;
• Y1 and Y2 are in each case and independently of one another chosen from the group consisting of alkali metal ions, alkaline earth metal ions and ammonium ions, the nitrogen atom of the ammonium ion being substituted by ≧0 groups and/or ≧0 hydroxyalkyl groups;
• and
• p, q, and r are in each case and independently of one another an integer between 0 and 10, wherein the composition comprises at least one ethoxylated phosphate ester of the above formula wherein at least one of p, q and r is an integer between 1 and 10;
• wherein said composition comprises at least one anionic or zwitterionic surfactant which is different from said at least one ethoxylated alkyl phosphate and at least one nonionic surfactant which is different from said at least one ethoxylated alkyl phosphate.