Patent ID: 7703536

Claim:
I claim a gas lift system comprising; a lift tube having an inside, an outside, a top end and a distal end being placed within a production string said top end in communication with a recovery system; a plurality of differential pressure control valves each having the same differential operation pressure adapted to be attached to said lift tube such that said inside of said lift tube is in communication with said production string through each of said differential pressure control valves and wherein fluid contained within said production string may freely pass into said lift tube through each of said differential pressure control valves when open and such that each of said differential control valves will close whenever the decreasing pressure within said lift tube approaches the pressure within said production string; a jet pump attached to the distal end of said lift tube said jet pump adapted to lift liquids up said lift tube whenever gas is applied therewith; and a source of pressured gas applied to said production string.