1. Ph.D. Student, Australian School of Petroleum (Engineering Discipline), Univ. of Adelaide, North Terrace, Adelaide 5005, South Australia, Australia. E-mail: Bronwyn.Camac@adelaide.edu.au
2. Senior Lecturer, Australian School of Petroleum (Engineering Discipline), Univ. of Adelaide, North Terrace, Adelaide 5005, South Australia, Australia. E-mail: Suzanne.Hunt@adelaide.edu.au
3. Chief Petroleum Geologist, Primary Industries of South Australia, Office of Minerals and Energy Resources, South Australia, GPO Box 1671, Adelaide 5001, South Australia, Australia. E-mail: Boult.Peter@saugov.sa.gov.au