i believe there are a series of reports that report the decisions of
international arbitration with respect to petroleum agreements
somewhere on line either for a fee or free. please provide a site.

I believe the publication you are looking for is: 
 
"Yearbook Commercial Arbitration Volume Xxiii - 1998" $234.50

"An article by R. Doak Bishop entitled `International Arbitration of
Petroleum Disputes: The Development of a Lex Petrolea ' surveys
virtually all published arbitral awards relating to the petroleum
industry, and distills from them `a comprehensive roadmap' of the
issues and solutions found in these awards."
http://www.aspenpublishers.com/Product.asp?catalog%5Fname=Aspen&category%5Fname=Commercial+Arbitration+48CD&product%5Fid=9041111042&Mode=BROWSE&ProductType=M

Hope that helps a little.

Dr_Know