We believe Talisman Energy Inc. will continue to exploit its existing asset base to internally replace reserves and maintain a fairly stable production profile. The company has a strong balance sheet and liquidity that provides support as the company executes its strategy to develop its unconventional assets. We affirmed our 'BBB' corporate credit and senior unsecured debt ratings on the company. TORONTO (Standard&Poor's) Sept. 4, 2009--Standard&Poor's Ratings Services today said it affirmed its 'BBB' long-term corporate credit and senior unsecured debt ratings on Calgary, Alta.-based Talisman Energy Inc. The outlook is stable. "We have affirmed the ratings on Talisman based on our expectation that the company will be continue to execute its new strategy with a