Method for treating a fractured formation with a non-ionic fluorinated polymeric surfactant
AssigneesBoard of Regents, The University of Texas System, 3M Innovative Properties Company
InventorsGary A. Pope, Jimmie R. Baran, Jr., John Skildum, Vishal Bang, Mukul M. Sharma
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Abstract
The present invention includes compositions and methods of treating a hydrocarbon-bearing formation, the formation having at least one fracture, by contacting the fracture with a composition that includes a solvent and a nonionic fluorinated polymeric surfactant, wherein the composition interacts with at least a portion of the proppants in the fracture.
Claims20
A method of treating a hydrocarbon-bearing formation having at least one fracture, wherein the fracture has a volume, and wherein the fracture has a plurality of proppants therein, the method comprising:
- contacting the fracture with an amount of a composition, wherein the amount of the composition is based at least partially on the volume of the fracture, wherein the composition comprises solvent and a nonionic fluorinated polymeric surfactant, and wherein the nonionic fluorinated polymeric surfactant comprises:
- at least one divalent unit represented by formula:
- a poly(alkyleneoxy) segment
- wherein
- Rf represents a perfluoroalkyl group having from 1 to 8 carbon atoms;
- R and R2 are each independently hydrogen or alkyl of 1 to 4 carbon atoms;
- and
- n is an integer from 2 to 10;
- allowing the nonionic polymeric fluorinated surfactant to interact with at least a portion of the plurality of proppants.
A method of treating a hydrocarbon-bearing formation having at least one fracture, wherein the fracture has a volume, wherein the fracture has brine therein, and wherein the fracture has a plurality of proppants therein, the method comprising:
- pre-treating the hydrocarbon-bearing formation with a fluid that at least partially solubilizes or at least partially displaces the brine in the fracture;
- contacting the proppants in the fracture with an amount of a composition, wherein the amount of the composition is based at least partially on the volume of the fracture, wherein the composition comprises solvent and a nonionic fluorinated polymeric surfactant, and wherein the nonionic fluorinated polymeric surfactant comprises:
- at least one divalent unit represented by formula:
- a poly(alkyleneoxy) segment
- wherein
- Rf represents a perfluoroalkyl group having from 1 to 8 carbon atoms;
- R and R2 are each independently hydrogen or alkyl of 1 to 4 carbon atoms;
- and
- n is an integer from 2 to 10;
- allowing the nonionic polymeric fluorinated surfactant to interact with at least a portion of the proppants.
Dependencies are inferred from the claim text.