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Concentration Of Market And Credit Risk
12 Months Ended
Sep. 30, 2011
Concentration Of Market And Credit Risk 
Concentration Of Market And Credit Risk

NOTE 11—CONCENTRATION OF MARKET AND CREDIT RISK

All of our customers are in the oil and gas offshore exploration and production industry. This industry concentration has the potential to impact our overall exposure to market and credit risks, either positively or negatively, in that our customers could be affected by similar changes in economic, industry or other conditions. However, we believe that the credit risk posed by this industry concentration is offset by the creditworthiness of our customer base.

Revenues from significant customers are as follows (in thousands):

 

     Fiscal
2011		      Fiscal
2010		      Fiscal
2009		  

Chevron Australia

    $ 199,685         81,577         —     

Sarawak Shell Bhd.

      138,836         84,617         81,538   

Kosmos Energy Ghana Inc.

      136,205         90,936         —     

Noble Energy Mediterranean, Ltd.

      —           —           149,603   

Woodside Energy Ltd.

      —           —           114,637