Diamond Offshore Drilling, Inc. has signed a two-year contract with Total E&P Angola in Angola for the 4th generation semisubmersible Ocean Valiant that could earn maximum revenue, excluding mobilization fees, totaling approximately $452 million. The contract is convertible into either a 2-1/2 year or a three-year agreement at the option of the operator at dayrates that could earn maximum total revenue, excluding mobilization fees, totaling between $552 million and $646 million...more...