To stabilize concentrated surfactant solutions utilized for enhanced oil recovery that include active surfactant content ranging from 35% to 90%, alcohols such as isopropyl alcohol (IPA) or isobutyl alcohol (IBA) are added to the concentrated solutions to stabilize them. It is preferable to blend these surfactant solutions at a convenient industrial facility rather than in the field, at a location proximate to the geographic region of use. In order to avoid having to blend the surfactant solution in the field, however, suitable storage during transportation and while awaiting use is necessary.
There is, therefore, a need in the art for improved surfactant solution storage.