Aqueous tackifier and methods of controlling particulates
The present invention relates to aqueous tackifiers and methods of controlling particulates in subterranean formations using aqueous tackifiers. Some embodiments of the present invention provide methods of controlling particulates, comprising placing an aqueous tackifier compound into a portion of a subterranean formation comprising unconsolidated particulates; and, activating the aqueous tackifier compound. Other embodiments of the present invention provide methods of coating a portion of a surface in a subterranean formation comprising substantially coating an aqueous tackifier compound onto a portion of a subterranean formation; and, activating the aqueous tackifier compound. Other embodiments of the present invention provide treatment fluids for controlling fine particulates, comprising a servicing fluid and an aqueous tackifier compound.
1. A method comprising:
providing a servicing fluid comprising an aqueous tackifier compound, wherein the aqueous tackifier compound comprises at least one compound selected from the group consisting of: an acrylic acid ester polymer, an acrylic acid homopolymer, an acrylic acid ester homopolymer, an acrylamido-methyl-propane sulfonate homopolymer, an acrylamido-methyl-propane sulfonate derivative homopolymer, and any mixture thereof;
activating the aqueous tackifier compound with a chemical activator to form an activated aqueous tackifier compound, wherein the chemical activator comprises at least one compound selected from the group consisting of: an organic acid, an anhydride of an organic acid, an inorganic acid, a charged surfactant, a charged polymer, and any combination thereof,
wherein activating involves transforming the aqueous tackifier compound from a not tacky form to a tacky form that is the activated aqueous tackifier compound; and
placing the servicing fluid into a subterranean formation via a well bore; and allowing the activated aqueous tackifier compound in the servicing fluid to enhance the grain-to-grain contact between subterranean formation particulates.
2. The method of claim 1 , wherein the servicing fluid comprises at least one fluid selected from the group consisting of: an aqueous fluid, an emulsion, and a foam.
3. The method of claim 1 , wherein the servicing fluid is crosslinked.
4. The method of claim 1 , wherein the aqueous tackifier compound is activated before placing the servicing fluid into the subterranean formation.
5. The method of claim 1 , wherein the aqueous tackifier compound is activated while placing the servicing fluid into the subterranean formation.
6. The method of claim 1 , wherein the aqueous tackifier compound is activated subsequent to placing the servicing fluid into the subterranean formation.
7. The method of claim 1 , wherein the activated aqueous tackifier compound preferentially binds to surfaces having a positive zeta potential.
8. The method of claim 1 , wherein the activated aqueous tackifier compound preferentially binds to hydrophobic surfaces.
9. The method of claim 1 , wherein the activated aqueous tackifier compound preferentially binds to surfaces having a negative zeta potential.
10. The method of claim 1 , wherein the activated aqueous tackifier compound preferentially binds to hydrophilic surfaces.
11. The method of claim 1 , wherein activating the aqueous tackifier compound with a chemical activator comprises destabilizing the aqueous tackifier compound.
12. The method of claim 1 , wherein the chemical activator further comprises an acetic acid/acetic anhydride blend.
13. The method of claim 1 , further comprising, before placing the servicing fluid into a portion of a subterranean fracture, introducing a pretreatment fluid into the portion of the subterranean formation.
14. The method of claim 13 , wherein the pretreatment fluid is introduced into the subterranean fracture prior to introducing the servicing fluid into the subterranean fracture.
15. The method of claim 13 wherein the pretreatment fluid comprises at least one compound selected from the group consisting of: a charged surfactant, a charged polymer, and any combination thereof.
16. The method of claim 1 , wherein the chemical activator is present in the subterranean formation prior to placing the aqueous tackifier compound therein.
17. A method comprising:
providing a servicing fluid comprising an aqueous tackifier compound wherein the aqueous tackifier compound comprises at least one compound selected from the group consisting of: an acrylic acid polymer, an acrylic acid ester polymer, an acrylic acid homopolymer, an acrylic acid ester homopolymer, an acrylamido-methyl-propane sulfonate homopolymer, an acrylamido-methyl-propane sulfonate derivative homopolymer, and any mixture thereof;
activating the aqueous tackifier compound with a chemical activator to form an activated aqueous tackifier compound and placing the servicing fluid into a subterranean formation via a well bore,
wherein activating involves transforming the aqueous tackifier compound from a not tacky form to a tacky form that is the activated aqueous tackifier compound; and
allowing the activated aqueous tackifier compound in the servicing fluid to at least partially coat and form an adhesive surface on an exposed surface of the subterranean formation.
18. A method comprising:
providing a servicing fluid comprising an aqueous tackifier compound;
activating the aqueous tackifier compound with a chemical activator comprising an acetic acid/acetic anhydride blend to form an activated aqueous tackifier compound, and placing the activated aqueous tackifier compound servicing fluid into a subterranean formation via a well bore after; and
allowing the activated aqueous tackifier compound in the servicing fluid to consolidate particulates within the formation.
19. The method of claim 18 , wherein the servicing fluid comprises at least one fluid selected from the group consisting of: an aqueous fluid, an emulsion, and a foam.
20. The method of claim 18 , wherein the servicing fluid is crosslinked.
21. The method of claim 18 , wherein the aqueous tackifier compound is activated before placing the servicing fluid into the subterranean formation.
22. The method of claim 18 , wherein the aqueous tackifier compound is activated while placing the servicing fluid into the subterranean formation.
23. The method of claim 18 , wherein the aqueous tackifier compound is activated subsequent to placing the servicing fluid into the subterranean formation.
24. The method of claim 18 , wherein the activated aqueous tackifier compound preferentially binds to surfaces having a positive zeta potential.
25. The method of claim 18 , wherein the activated aqueous tackifier compound preferentially binds to hydrophobic surfaces.
26. The method of claim 18 , wherein the activated aqueous tackifier compound preferentially binds to surfaces having a negative zeta potential.
27. The method of claim 18 , wherein the activated aqueous tackifier compound preferentially binds to hydrophilic surfaces.
28. The method of claim 18 , wherein activating the aqueous tackifier compound with a chemical activator comprises destabilizing the aqueous tackifier compound.
29. The method of claim 18 , wherein the chemical activator further comprises at least one compound selected from the group consisting of: an organic acid, an anhydride of an organic acid, an inorganic acid, an inorganic salt, a charged surfactant, a charged polymer, and any combination thereof.
30. The method of claim 18 , further comprising, before placing the servicing fluid into a portion of a subterranean fracture, introducing a pretreatment fluid into the portion of the subterranean formation.
31. The method of claim 30 , wherein the pretreatment fluid is introduced into the subterranean fracture prior to introducing the servicing fluid into the subterranean fracture.
32. The method of claim 30 wherein the pretreatment fluid comprises at least one compound selected from the group consisting of: a charged surfactant, a charged polymer, and any combination thereof.