Heavy oil well stimulation composition and process

摘要: A composition for, and an improved process of, enhancing petroleum recovery from a reservoir by injecting said into the through wellbore are provided. The aqueous is derived concentrate which includes defoaming agent, demulsifying optionally stabilizing agent suitable for as emulsion. In one embodiment, dispersed in carrier solvent further emulsifying water. preferably injected at high pumping rate directly formation tubing-casing annulus allowed to permeate surrounding before oil production commences. method particularly suited used conjunction with steam injection techniques.