| abstract |
This specification discloses a process of acidizing a subsurface formation, which formation is penetrated by a well extending from the surface of the earth. In accordance with this process, an amphipathic solvent is injected via the well into the formation. Thereafter, an aqueous solution of an acid is injected via the well into the formation to dissolve a portion of the formation. Subsequently, a fluid that is nonmiscible with the aqueous solution of the acid is injected via the well into the formation. |