Becker explains the physical chemical problems associated with waxes and emulsions and the new technologies for treatment of these problems. Contents: Petroleum companies and emulsions Forces involved in macroscopic physical behavior of emulsions Oil and water emulsion breakers Petroleum companies and waxes Chemical surfaces Wax crystal order and temperature Wax: physical properties and quantum effects Ashaltenes and crude oil Ashaltenes: bulk behavior and testing methods Physical properties of treating chemicals Appendices.