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Investigation of the mechanism of chemical destruction of surfactants applied for EOR
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, IOR 1991 - 6th European Symposium on Improved Oil Recovery, May 1991, cp-44-00080
- ISBN: 978-94-6282-133-0
Abstract
Chemical destruction of nonionic surfactants occurs under the action of elements in catalytic amounts, involved in the reservoir medium. In some oil fields the destruction can be as high as 80% (OΠ-10). Main products resulted from the chemical destruction are alkylphenols, paraffins, residuals of polyoxyethylene fragments followed by interetherification to form sulphide and sulphoxide compounds.