Water Treatment

Marathon's advanced filtration technology removes sulfate ions from seawater prior to injection using sulfate removal technology (SRT) membranes.

Barium sulfate scaling can be a severe problem in deepwater operations. Such scaling results from the combination of sulfate ions in injection seawater and barium ions in formation waters. Removal of these scale accumulations can be extremely difficult and expensive. Treatment with scale-inhibitor chemicals on sub-sea well completions is nearly impossible, dramatically increasing the need for sulfate removal technology.

Marathon's SRT is used in 35 large projects worldwide. Projects (operators) include North Sea (Marathon, Statoil, Encana), Angola (BP, TFE, Chevron, ExxonMobil), Brazil (Petrobras, Shell), Equatorial Guinea (Hess) and the U.S. (Shell).

For more information, please contact:

PRATT Technology Management
George P. Southwell
P.O. Box 101973
Denver, CO 80250-1973
Phone: +1 303-692-0139
Fax: +1 303-756-4020
Email: george@prattllc.net