Fluorosurfactants and treatment fluids for reduction of water blocks, oil blocks, and/or gas condensates and associated methods

• US 8,669,212 B2
• Filed: 09/03/2009
• Issued: 03/11/2014
• Est. Priority Date: 09/03/2009
• Status: Active Grant

• Current Assignee: Halliburton Energy Services Incorporated (Halliburton Company)
• Original Assignee: Halliburton Energy Services Incorporated (Halliburton Company)
• Inventors: Norman, Lewis R., Saini, Rajesh K.
• Primary Examiner(s): Figueroa, John J
• Application Number:
  US12/553,764
• Publication Number:
  US 20110053810A1
• Time in Patent Office: 1,650 Days
• Field of Search: None
• US Class Current: 507/205
• CPC Class Codes: C09K 8/035 Organic additives
• CPC Class Codes: C09K 8/52 Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning
• CPC Class Codes: C09K 8/602 containing surfactants
• CPC Class Codes: C09K 8/604 Polymeric surfactants
• CPC Class Codes: C09K 8/68 containing organic compounds
• CPC Class Codes: C09K 8/78 for preventing sealing

Abstract

The present invention relates to fluids useful for subterranean operations, and more particularly, to fluorosurfactants useful for the reduction of water blocks, gas blocks, and/or gas condensates and their associated treatment fluids and methods. Provided is a method of treating a subterranean formation. The method may comprise contacting the subterranean formation with a fluorosurfactant. The fluorosurfactant may comprise an amine group, wherein the amine group comprises at least one substituent selected from the group consisting of a fluoroalkyl group, a fluoroalkenyl group, and combinations thereof, wherein the at least one substituent comprises about 3 carbons to about 22 carbons. Also provided are polymeric surfactants and treatment fluids that comprise fluorosurfactants.

Claims

1. A method of treating a gas well comprising:

contacting a subterranean formation with a cationic fluorosurfactant, wherein the cationic fluorosurfactant comprises an amine group, wherein the amine group comprises at least one substituent comprising about 3 carbons to about 22 carbons and selected from the group consisting of a fluoroalkyl group, a fluoroalkenyl group, and combinations thereof.

2. The method of claim 1 wherein the fluorosurfactant reduces the occurrence of water blocks and/or gas condensates in a portion of the subterranean formation.

3. The method of claim 1 wherein the fluorosurfactant is a polymeric surfactant comprising repeating nitrogens that comprise the at least one substituent.

4. The method of claim 1 wherein the amine group is positively charged.

5. The method of claim 1 wherein the amine group is a quaternary amine.

6. The method of claim 1 wherein the fluorosurfactant comprises a surfactant having the following general structure:

7. The method of claim 1 wherein the fluorosurfactant comprises a surfactant having the following general structure:

8. The method of claim 1 wherein the fluorosurfactant comprises a surfactant having the following general structure:

9. The method of claim 1 wherein the fluorosurfactant is present in a treatment fluid in an amount of about 0.01% to about 10% by weight of the treatment fluid.

10. The method of claim 1 wherein the fluorosurfactant comprises a reaction product of a reaction comprising polyethylene imine and perfluoroalkyl halide.

11. The method of claim 1 wherein the substituent comprises the fluoroalkyl group and wherein the fluoroalkyl group comprises a perfluoroalkyl group.

12. The method of claim 1 further comprising contacting the subterranean formation with at least one non-fluoro surfactant for reducing the occurrence of water blocks.

13. The method of claim 1 wherein the treatment fluid further comprises at least one additive selected from the group consisting of a proppant particulate, a gravel particulate, a gelling agent, a crosslinking agent, a salt, an additional surfactant, a fluid loss control additive, an acid, gas, a surface modifying agent, a tackifying agent, a foamer, a corrosion inhibitor, a scale inhibitor, a catalyst, a clay control agent, a biocide, a friction reducer, an antifoam agent, a bridging agent, a dispersant, a flocculant, H₂S scavenger, CO₂ scavenger, an oxygen scavenger, a lubricant, a viscosifier, a breaker, a weighting agent, a relative permeability modifier, a resin, a wetting agent, and a coating enhancement agent.

14. The method of claim 1 further comprising introducing a treatment fluid comprising the fluorosurfactant into a subterranean formation at or above formation fracture pressure.

15. The method of claim 1 further comprising circulating a drilling fluid comprising the fluorosurfactant in a well bore penetrating the subterranean formation while drilling the well bore.

16. The method of claim 1 further comprising introducing a treatment fluid comprising the fluorosurfactant and an acid into the subterranean formation.

17. The method of claim 1 wherein the subterranean formation comprises coal bed methane.

18. The method of claim 1 wherein the fluorosurfactant is present in a treatment fluid, the treatment fluid comprising a hydrocarbon-based carrier fluid.

19. The method of claim 1, wherein the cationic fluorosurfactant has as a cationic moiety and an anionic salt moiety.

20. A method of treating a subterranean formation comprising:

introducing a treatment fluid into the subterranean formation, the treatment fluid comprising a carrier fluid and a fluorosurfactant having the following general structure;

21. The method of claim 20 wherein the fluorosurfactant is present in a treatment fluid, the treatment fluid comprising a hydrocarbon-based carrier fluid.