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Flash point adjustment of wettability alteration chemicals in hydrocarbon solvents

  • US 10,577,528 B2
  • Filed: 02/19/2019
  • Issued: 03/03/2020
  • Est. Priority Date: 05/05/2014
  • Status: Active Grant
First Claim
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1. A chemical treatment composition that enhances both gas and condensate productivities from a hydrocarbon reservoir, the hydrocarbon reservoir having a reservoir surface, the chemical treatment composition comprising:

  • a wettability alteration chemical at between about 0.1% to about 10.0% by weight of the chemical treatment composition, wherein the wettability alteration chemical is selected from a group consisting of a fluorinated surfactant, a polymeric surfactant, a polymeric fluorinated surfactant, and combinations of the same,and a solvent mixture, the solvent mixture including a solvent, where the solvent comprises 2-butoxyethanol, and in addition a high molecular weight alcohol combination between about 20.0% and about 40.0% by weight of the chemical treatment composition,wherein the high molecular weight alcohol combination comprises 1-pentanol and 1-hexanol, and wherein the chemical treatment composition is soluble in water with an interfacial tension of less than 0.78 dyne/cm, the 2-butoxyethanol and high molecular weight alcohol combination being first combined before addition of the wettability alteration chemical in amounts operable to result in the selected flash point of at least 40°

    C.

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