Submitted on: 28 November 2001.
Revised on: 05 February 2002.
Accepted on: 25 February 2002.
___________________Journal of Petroleum Exploration and Production Technology
Submitted on: 05 October 2001.
Revised on: 07 January 2002.
Accepted on: 25 February 2002.
___________________Journal of Petroleum Exploration and Production Technology
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Submitted on: 29 June 2009.
Revised on: 10 October 2009.
Accepted on: 17 November 2009.
___________________Journal of Petroleum Exploration and Production Technology
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