Patent ID: 11898431
Assignee: UNIVERSAL CHEMICAL SOLUTIONS, INC.
Field: Basic materials chemistry (Chemistry)
Classification: CPC E  C | IPC C  E

Claim 0:
1. A method for treating a hydrocarbon-bearing formation previously subjected to hydraulic fracturing comprising:
(a) pumping into a wellbore a non-emulsified treatment composition comprising liquefied petroleum gas (LPG), one or more surfactants, a non-emulsifier, and a defoamer; wherein the non-emulsified treatment composition contains no separately added water;
(b) causing the treatment composition to make contact with water residing in the formation such that no emulsion is formed with the water residing in the formation,
(c) recovering a non-emulsified production composition that includes (i) residual hydrocarbons, (ii) a portion of the LPG that was previously pumped into the wellbore in step (a), (iii) a portion of the water that resided in the formation and (iv) a portion of the one or more surfactants that were pumped into the wellbore in step (a).