Aqueous-based tackifier fluids and methods of use
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
E21B-033/138
E21B-043/04
E21B-043/02
E21B-043/267
E21B-043/25
출원번호
US-0864618
(2004-06-09)
발명자
/ 주소
Blauch,Matthew E.
Welton,Thomas D.
Nguyen,Philip D.
출원인 / 주소
Halliburton Energy Services, Inc.
대리인 / 주소
Baker Botts
인용정보
피인용 횟수 :
134인용 특허 :
33
초록▼
The present invention relates to aqueous based tackifier fluids and their use in stabilizing particulates in propped fractures. Some embodiments of the present invention provide methods of creating a proppant pack in a subterranean formation, comprising introducing an aqueous servicing fluid compri
The present invention relates to aqueous based tackifier fluids and their use in stabilizing particulates in propped fractures. Some embodiments of the present invention provide methods of creating a proppant pack in a subterranean formation, comprising introducing an aqueous servicing fluid comprising proppant particulates, wherein at least some of the proppant particulates are at least partially coated with an aqueous tackifier compound, into a subterranean fracture; and, activating the aqueous tackifier compound so as to form a proppant pack. Other embodiments provide methods of stabilizing a proppant pack comprising introducing an aqueous tackifier compound to at least a portion of an existing proppant pack; and, activating the aqueous tackifier compound so as to stabilize the proppant pack. Other embodiments provide servicing fluids comprising proppant particulates and an aqueous fluid wherein at least some of the proppant particulates are at least partially coated with an aqueous tackifier compound.
대표청구항▼
What is claimed is: 1. A method of creating a proppant pack in a subterranean formation, comprising: introducing an aqueous servicing fluid comprising proppant particulates, wherein at least some of the proppant particulates are at least partially coated with an aqueous tackifier compound, into a s
What is claimed is: 1. A method of creating a proppant pack in a subterranean formation, comprising: introducing an aqueous servicing fluid comprising proppant particulates, wherein at least some of the proppant particulates are at least partially coated with an aqueous tackifier compound, into a subterranean fracture; and activating the aqueous tackifier compound by exposing the aqueous tackifier compound to an activator so as to form a proppant pack. 2. The method of claim 1 wherein activating the aqueous tackifier compound forms a stable proppant pack. 3. The method of claim 1 wherein the servicing fluid comprises an aqueous fluid, emulsion, or foam. 4. The method of claim 1 wherein the servicing fluid comprises fresh water, salt water, or a combination thereof. 5. The method of claim 1 wherein the servicing fluid is crosslinked. 6. The method of claim 1 wherein the servicing fluid further comprises the activator. 7. The method of claim 1 wherein the activator is 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 a combination thereof. 8. The method of claim 1 wherein the aqueous tackifier compound is activated before introducing the proppant particulates into the subterranean fracture. 9. The method of claim 1 wherein the aqueous tackifier compound is activated while the proppant particulates are introduced into the subterranean fracture. 10. The method of claim 1 wherein the aqueous tackifier compound is activated subsequent to introducing the proppant particulates into the subterranean fracture. 11. The method of claim 1 wherein the aqueous tackifier compound preferentially binds to surfaces having a positive zeta potential. 12. The method of claim 1 wherein the aqueous tackifier compound preferentially binds to hydrophobic surfaces. 13. The method of claim 1 wherein the aqueous tackifier compound preferentially binds to surfaces having a negative zeta potential. 14. The method of claim 1 wherein the aqueous tackifier compound preferentially binds to hydrophilic surfaces. 15. The method of claim 1 wherein the aqueous tackifier compound is selected from the group consisting of an acrylic acid polymer, an acrylic acid ester polymer, an acrylic acid derivative polymer, an acrylic acid homopolymer, an acrylic acid ester homopolymer, an acrylamido-methyl-propane sulfonate polymer, an acrylamido-methyl-propane sulfonate derivative polymer, an acrylamido-methyl-propane sulfonate co-polymer, an acrylic acidlacrylamido-methyl-propane sulfonate co-polymer, a copolymer thereof, and a mixture thereof. 16. The method of claim 1 wherein activating the aqueous tackifier compound comprises destabilizing the aqueous tackifier compound. 17. The method of claim 1 wherein the activator is 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 a combination thereof. 18. The method of claim 1 wherein the activator comprises an acetic acid/acetic anhydride blend. 19. The method of claim 1 wherein the proppant particulates are contacted with a pretreatment fluid before being at least partially coated with an aqueous tackifier compound. 20. The method of claim 19 wherein the pretreatment fluid is 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 a combination thereof. 21. The method of claim 1 wherein the proppant particulates is at least partially coated with resin before being at least partially coated with an aqueous tackifier compound. 22. A method of stabilizing a proppant pack comprising: introducing an aqueous tackifier compound to at least a portion of an existing proppant pack; and activating the aqueous tackifier compound by exposing the aqueous tackifier compound to an activator so as to stabilize the proppant pack. 23. The method of claim 22 wherein the aqueous tackifier compound is mixed with a servicing fluid before being placed into the portion of the subterranean formation. 24. The method of claim 23 wherein the servicing fluid comprises an aqueous fluid, emulsion, or foam. 25. The method of claim 23 wherein the servicing fluid comprises fresh water, salt water, or a combination thereof. 26. The method of claim 23 wherein the servicing fluid is crosslinked. 27. The method of claim 23 wherein the servicing fluid further comprises the activator. 28. The method of claim 22 wherein the activator is 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 a combination thereof. 29. The method of claim 22 wherein the aqueous tackifier compound is selected from the group consisting of an acrylic acid polymer, an acrylic acid ester polymer, an acrylic acid derivative polymer, an acrylic acid homopolymer, an acrylic acid ester homopolymer, an acrylamido-methyl-propane sulfonate polymer, an acrylamido-methyl-propane sulfonate derivative polymer, an acrylamido-methyl-propane sulfonate co-polymer, an acrylic acid/acrylamido-methyl-propane sulfonate co-polymer, a copolymer thereof, and a mixture thereof. 30. The method of claim 22 wherein activating the aqueous tackifier compound comprises destabilizing the aqueous tackifier compound. 31. The method of claim 22 wherein the activator is 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 a combination thereof. 32. The method of claim 22 wherein the activator comprises an acetic acid/acetic anhydride blend. 33. The method of claim 22 wherein at least a portion of the existing proppant pack is contacted with a pretreatment fluid before introducing the aqueous tackifier compound to at least a portion of an existing proppant pack. 34. The method of claim 33 wherein the pretreatment fluid is 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 a combination thereof. 35. The method of claim 22 wherein the proppant pack exhibits a higher conductivity after the aqueous tackifier has been activated than it had before the aqueous tackifier was activated. 36. A method of controlling proppant particulate flowback from a proppant pack, comprising: introducing an aqueous carrier fluid comprising proppant particulates, wherein at least some of the proppant particulates are at least partially coated with an aqueous tackifier compound, into a subterranean fracture so as to form a proppant pack; and activating the aqueous tackifier compound by exposing the aqueous tackifier compound to an activator. 37. The method of claim 36 wherein activating the aqueous tackifier compound forms a stable proppant pack. 38. The method of claim 36 wherein the servicing fluid comprises an aqueous fluid, emulsion, or foam. 39. The method of claim 36 wherein the servicing fluid comprises fresh water, salt water, or a combination thereof. 40. The method of claim 36 wherein the servicing fluid is crosslinked. 41. The method of claim 36 wherein the servicing fluid further comprises the activator. 42. The method of claim 36 wherein the activator is 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 a combination thereof. 43. The method of claim 36 wherein the aqueous tackifier compound is activated before introducing the proppant particulates into the subterranean fracture. 44. The method of claim 36 wherein the aqueous tackifier compound is activated while the proppant particulates are introduced into the subterranean fracture. 45. The method of claim 36 wherein the aqueous tackifier compound is activated subsequent to introducing the proppant particulates into the subterranean fracture. 46. The method of claim 36 wherein the aqueous tackifier compound preferentially binds to surfaces having a positive zeta potential. 47. The method of claim 36 wherein the aqueous tackifier compound preferentially binds to surfaces having a negative zeta potential. 48. The method of claim 36 wherein the aqueous tackifier compound is selected from the group consisting of an acrylic acid polymer, an acrylic acid ester polymer, an acrylic acid derivative polymer, an acrylic acid homopolymer, an acrylic acid ester homopolymer, an acrylamido-methyl-propane sulfonate polymer, an acrylamido-methyl-propane sulfonate derivative polymer, an acrylamido-methyl-propane sulfonate co-polymer, an acrylic acid/acrylamido-methyl-propane sulfonate co-polymer, a copolymer thereof, and a combination thereof. 49. The method of claim 36 wherein activating the aqueous tackifier compound comprises destabilizing the aqueous tackifier compound. 50. The method of claim 36 wherein the activator is 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 a combination thereof. 51. The method of claim 36 wherein the activator comprises an acetic acid/acetic anhydride blend. 52. The method of claim 36 wherein the proppant particulates are contacted with a pretreatment fluid before being at least partially coated with an aqueous tackifier compound. 53. The method of claim 52 wherein the pretreatment fluid is 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 a combination thereof. 54. The method of claim 36 wherein the proppant particulates is at least partially coated with resin before being at least partially coated with an aqueous tackifier compound. 55. A servicing fluid comprising proppant particulates, an aqueous fluid wherein at least some of the proppant particulates are at least partially coated with an aqueous tackifier compound, and an activator operable to activate the aqueous tackifier compound. 56. The servicing fluid of claim 55 wherein the aqueous fluid comprises fresh water, salt water, or a combination thereof. 57. The servicing fluid of claim 55 wherein the aqueous fluid is crosslinked. 58. The servicing fluid of claim 55 wherein the activator is 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 a combination thereof. 59. The servicing fluid of claim claim 55 wherein the activator comprises an acetic acid/acetic anhydride blend. 60. The servicing fluid of claim 55 wherein the aqueous tackifier compound preferentially binds to surfaces having a positive zeta potential. 61. The servicing fluid of claim 55 wherein the aqueous tackifier compound preferentially binds to surfaces having a negative zeta potential. 62. The servicing fluid of claim 55 wherein the aqueous tackifier compound is selected from the group consisting of an acrylic acid polymer, an acrylic acid ester polymer, an acrylic acid derivative polymer, an acrylic acid homopolymer, an acrylic acid ester homopolymer, an acrylamido-methyl-propane sulfonate polymer, an acrylamido-methyl-propane sulfonate derivative polymer, an acrylamido-methyl-propane sulfonate co-polymer, an acrylic acid/acrylamido-methyl-propane sulfonate co-polymer, a copolymer thereof, and a mixture thereof. 63. Proppant particulates coated with an aqueous tackifier compound that preferentially binds to surfaces having a positive zeta potential. 64. Proppant particulates coated with an aqueous tackifier compound that preferentially binds to surfaces having a negative zeta potential. 65. Proppant particulates coated with an aqueous tackifier compound comprises an acrylic acid polymer, acrylic acid ester polymer, acrylic acid derivative polymer, acrylic acid homopolymer, acrylic acid ester homopolymer, acrylamido-methyl-propane sulfonate polymer, acrylamido-methyl-propane sulfonate derivative polymer, acrylamido-methyl-propane sulfonate co-polymer, acrylic acid/acrylamido-methyl-propane sulfonate co-polymer, and copolymers thereof, or mixtures thereof.
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