MELBOURNE (Standard&Poor's) Jan. 22, 2016--Standard&Poor's Ratings Services said today that it had revised its rating outlook on Woodside Petroleum Ltd. (Woodside) to negative from stable. At the same time, we affirmed the 'BBB+' long-term rating on the company and its related debt issues and programs. "The outlook revision reflects our view that in the next one-to-two years Woodside's financial performance will be pressured beyond our tolerance for the 'BBB+' rating because of the current low spot oil price, which we expect to remain subdued in the long term," said Standard&Poor's credit analyst Craig Parker. "Nevertheless, if current oil prices remain depressed, we expect Woodside would take action, as it has done in the past,