Oil refinery stocks fell sharply on Friday with potential losses of between 17-43% in net profits this year after the government asked for the cooperation of companies to channel their profits into the Oil Fuel Fund for three months from July to September to help control fuel prices. The government is expecting profits from three kinds of businesses: diesel refineries, gasoline refineries and separation plants. Diesel refineries are expected to contribute 5-6 billion baht per month, while gasoline refineries are expected to contribute 1 billion per month. Gas separation plants are to contribut…