Alberta petrochemical projects get C$500 mln royalty credits

CALGARY, Alberta, Dec 5 (Reuters) - The Canadian oil-producing province of Alberta will offer C$500 million ($377.84 million) in royalty credits to Pembina Pipeline Corp , Suncor Energy Inc's Petro-Canada and Inter Pipeline Ltd for their petrochemical projects, the government said on Monday as it seeks to diversify its ailing economy.