1. Department
of Petroleum Engineering, Curtin University, GPO Box U1987, Perth, WA 6845, Australia
2. Curtin
Corrosion Engineering Industry Centre, Curtin University, GPO Box U1987, Perth, WA 6845, Australia
3. Gas Measurement and Auditing Pty Ltd, P.O
Box 458, Kalamunda, Perth, WA 6926, Australia