TORONTO (Standard & Poor's) May 11, 2005--Standard & Poor's Ratings Services today said it assigned its 'BBB+' senior unsecured debt rating to Talisman Energy Inc.'s 5.125% 10-year US$375 million and 5.75% 30-year US$125 million bond issues. Standard & Poor's also affirmed its existing 'BBB+' long-term corporate credit and senior unsecured debt ratings on the company. The outlook is stable. "We expect Talisman will use the proceeds from these bond issues primarily to refinance its existing bank debt, and for general corporate purposes. The company's near-term debt maturities are not onerous, and these bonds will further strengthen Talisman's liability management," said Standard & Poor's credit analyst Michelle Dathorne. "Furthermore, we expect the company's total debt levels are unlikely to increase materially