A process for recovering hydrocarbons with steam assisted gravity drainage (SAGD) with pressure differential injection. Methods for producing hydrocarbons in a subterranean formation having at least two well pairs include installing a highest pressure well pair in the subterranean formation; installing a lowest pressure well pair in the subterranean formation; applying a pressure differential across the highest pressure well pair and the lowest pressure well pair; injecting steam into the first injection well to form a first steam chamber; injecting steam into the final injection well to form an adjacent steam chamber; monitoring the steam chambers until they merge into a final steam chamber; ceasing the flow of steam into the first injection well; and injecting steam into the final injection well to maintain the final steam chamber.