3823777 is referenced by 36 patents and cites 5 patents.
A petroleum recovery method employing a mixed solvent for use in formation in contact with and over-laying a substantially water saturated porous formation which is prone to bottom water coning. The mixed solvent density is less than the density of water and greater than the density of the formation petroleum, and has a boiling point less than the boiling point of the formation petroleum. The solvent is injected into the formation near the petroleum-water interface and the mixture comprising solvent and petroleum is recovered from production wells. The solvent may be separated from the produced petroleum-solvent mixture by distillation and recondensation for reinjection into the formation.
