Reuters reports that John Dashwood, Exxon Mobil Australia chairman, said it will be an expensive project that is difficult to justify when Exxon Mobil has US gas supplies could start going to Asia.
The partners are evaluating a range of options including supplying gas to other companies' LNG plants or building a floating LNG platform, Dashwood said.
Exxon Mobil also is developing a $15.7 billion LNG project in Papua New Guinea and is a 25% partner in the $37 billion Gorgon LNG project, operated by Chevron.
Scarborough, a 50/50 joint venture between Exxon Mobil and BHP Billiton, is 280 km (174 mi) offshore.