VISCOSIFIER POLYMER FOR TREATMENT OF A SUBTERRANEAN FORMATION

• US 20160024367A1
• Filed: 03/03/2014
• Published: 01/28/2016
• Est. Priority Date: 03/03/2014
• Status: Active Grant

• Current Assignee: Halliburton Energy Services Incorporated (Halliburton Company)
• Original Assignee: Halliburton Energy Services Incorporated (Halliburton Company)
• Inventors: Zhou, Hui, Zha, Weibin
• Granted Patent: US 9,410,069 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: C09K 8/035 Organic additives
• CPC Class Codes: C09K 8/12 containing synthetic organic macromolecular compounds or their precursors
• CPC Class Codes: C09K 8/44 containing organic binders only
• CPC Class Codes: C09K 8/502 Oil-based compositions
• CPC Class Codes: C09K 8/508 macromolecular compounds C09K8/512 takes precedence
• CPC Class Codes: C09K 8/52 Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning
• CPC Class Codes: C09K 8/565 Oil-based compositions
• CPC Class Codes: C09K 8/5751 Macromolecular compounds C09K8/5756 takes precedence
• CPC Class Codes: C09K 8/64 Oil-based compositions
• CPC Class Codes: C09K 8/68 containing organic compounds
• CPC Class Codes: C09K 8/725 Compositions containing polymers
• CPC Class Codes: C09K 8/82 Oil-based compositions C09K8/64 takes precedence
• CPC Class Codes: C09K 8/88 macromolecular compounds
• CPC Class Codes: E21B 21/062 by mixing components
• CPC Class Codes: E21B 43/26 by forming crevices or fractures
• CPC Class Codes: E21B 7/00 Special methods or apparatus for drilling

Abstract

Various embodiments disclosed relate to a viscosifier polymer for treatment of a subterranean formation, and methods and systems including the same. In various embodiments, the present invention provides a method of treating a subterranean formation. The method can include obtaining or providing a composition including a viscosifier polymer. The method can also include placing the composition in a subterranean formation.

Claims

1. A method of treating a subterranean formation, the method comprising:

placing in the subterranean formation a composition comprising a viscosifier polymer comprising

an ethylene repeating unit comprising an —

NR^a—

C(O)—

R^b group, wherein at each occurrence R^a and R^b are each independently selected from —

H and substituted or unsubstituted (C₁-C₂₀)hydrocarbyl or R^a and R^b together form a substituted or unsubstituted (C₂-C₂₀)hydrocarbylene,

an ethylene repeating unit comprising an —

S(O)₂OR¹ group wherein at each occurrence R¹ is independently selected from the group consisting of —

H and a counterion,

an ethylene repeating unit at each occurrence independently linked to an ethylene repeating unit in the same viscosifier polymer molecule or in another molecule of the viscosifier polymer via a —

C(O)—

NH-(substituted or unsubstituted (C₁-C₂₀)hydrocarbylene)-NH—

C(O)—

group, and

an ethylene repeating unit bonded to an —

R²—

O—

R²—

C(—

R²—

OR³)₃ group, wherein at each occurrence R² is independently substituted or unsubstituted (C₁-C₁₀)hydrocarbylene and at each occurrence R³ is independently selected from the group consisting of —

H and -(substituted or unsubstituted (C₁-C₁₀)hydrocarbylene)-M wherein at each occurrence M is independently an ethylene repeating unit of the same viscosifier polymer molecule or an ethylene repeating unit of another molecule of the viscosifier polymer,

wherein the repeating units are in block, alternate, or random configuration.

4. The method of claim 1, wherein the method comprises at least one of drilling the subterranean formation, fracturing the subterranean formation, and performing fluid loss control or diversion.

7. The method of claim 1, wherein the composition comprises at least one of an aqueous liquid and a water-miscible liquid.

14. The method of claim 1, wherein about 0.001 wt % to about 100 wt % of the composition is the viscosifier polymer.

16. The method of claim 7, wherein about 0.01 wt % about 10 wt % of the composition is the viscosifier polymer.

17. The method of claim 1, wherein a viscosity of the composition, at standard temperature and pressure and at a shear rate of about 50 s⁻

1 to about 500 s<sup>−

1</sup>, is about 0.01 cP to about 1,000,000 cP.

19. The method of claim 1, wherein a viscosity of the composition, at 120°

F. and at a shear rate of about 50 s<sup>−

1</sup> to about 500 s<sup>−

1</sup>, is about 10 cP to about 1,000 cP.

22. The method of claim 1, wherein the viscosifier polymer has about A^mol mol % of the repeating unit comprising the —

S(O)₂OR¹, about B^mol mol % of the repeating unit comprising the —

NR^a—

C(O)—

R^b group, about C^mol mol % of the repeating unit comprising the —

C(O)—

NH-(substituted or unsubstituted (C₁-C₂₀)hydrocarbylene)-NH—

C(O)—

group, and about D^mol mol % of the repeating unit comprising the —

R²—

O—

R²—

C(—

R²—

OR³)₃ group, wherein A^mol is about 50 mol % to about 98 mol %.

24. The method of claim 1, wherein the viscosifier polymer has about A^mol mol % of the repeating unit comprising the —

S(O)₂OR¹, about B^mol mol % of the repeating unit comprising the —

NR^a—

C(O)—

R^b group, about C^mol mol % of the repeating unit comprising the —

C(O)—

NH-(substituted or unsubstituted (C₁-C₂₀)hydrocarbylene)-NH—

C(O)—

group, and about D^mol mol % of the repeating unit comprising the —

R²—

O—

R²—

C(—

R²—

OR³)₃ group, wherein B^mol is about 1 mol % to about 40 mol %.

26. The method of claim 1, wherein the viscosifier polymer has about A^mol mol % of the repeating unit comprising the —

S(O)₂OR¹, about B^mol mol % of the repeating unit comprising the —

NR^a—

C(O)—

R^b group, about C^mol mol % of the repeating unit comprising the —

C(O)—

NH-(substituted or unsubstituted (C₁-C₂₀)hydrocarbylene)-NH—

C(O)—

group, and about D^mol mol % of the repeating unit comprising the —

R²—

O—

R²—

C(—

R²—

OR³)₃ group, wherein C^mol is about 0.1 mol % to about 15 mol %.

28. The method of claim 1, wherein the viscosifier polymer has about A^mol mol % of the repeating unit comprising the —

S(O)₂OR¹, about B^mol mol % of the repeating unit comprising the —

NR^a—

C(O)—

R^b group, about C^mol mol % of the repeating unit comprising the —

C(O)—

NH-(substituted or unsubstituted (C₁-C₂₀)hydrocarbylene)-NH—

C(O)—

group, and about D^mol mol % of the repeating unit comprising the —

R²—

O—

R²—

C(—

R²—

OR³)₃ group, wherein D^mol is about 0.1 mol % to about 15 mol %.

30. The method of claim 1, wherein the viscosifier polymer has about A^mol mol % of the repeating unit comprising the —

S(O)₂OR¹, about B^mol mol % of the repeating unit comprising the —

NR^a—

C(O)—

R^b group, about C^mol mol % of the repeating unit comprising the —

C(O)—

NH-(substituted or unsubstituted (C₁-C₂₀)hydrocarbylene)-NH—

C(O)—

group, and about D^mol mol % of the repeating unit comprising the —

R²—

O—

R²—

C(—

R²—

OR³)₃ group, wherein A^mol+B^mol+C^mol+D^mol=about 100%.

31. The method of claim 1, wherein the viscosifier polymer comprises repeating units having the structure:

34. The method of claim 31, wherein at each occurrence R⁵, R⁶, and R⁷ are each —

H.

60. The method of claim 1, wherein the viscosifier polymer has a molecular weight of about 2,000,000 g/mol to about 1,000,000,000 g/mol.

66. The method of claim 1, wherein the viscosifier polymer comprises repeating units having the structure:

69. The method of claim 1, wherein the composition further comprises a secondary viscosifier.

76. The method of claim 1, wherein the composition further comprises a crosslinker comprising at least one of chromium, aluminum, antimony, zirconium, titanium, calcium, boron, iron, silicon, copper, zinc, magnesium, and an ion thereof.

2-3. -3. (canceled)

5-6. -6. (canceled)

8-13. -13. (canceled)

15. (canceled)

18. (canceled)

20-21. -21. (canceled)

23. (canceled)

25. (canceled)

27. (canceled)

29. (canceled)

32-33. -33. (canceled)

35-59. -59. (canceled)

61-65. -65. (canceled)

67-68. -68. (canceled)

70-75. -75. (canceled)

77-87. -87. (canceled)

88. A method of treating a subterranean formation, the method comprising:

placing in the subterranean formation a composition comprising a viscosifier polymer comprising repeating units having the structure;

89. A system comprising:

a tubular disposed in a subterranean formation; and

a pump configured to pump a composition comprising a viscosifier polymer through the tubular, the composition comprising the viscosifier polymer comprising

an ethylene repeating unit comprising an —

NR^a—

C(O)—

R^b group, wherein at each occurrence R^a and R^b are each independently selected from —

H and substituted or unsubstituted (C₁-C₂₀) hydrocarbyl or R^a and R^b together form a substituted or unsubstituted (C₂-C₂₀)hydrocarbylene,

an ethylene repeating unit comprising an —

S(O)₂OR¹ group wherein at each occurrence R¹ is independently selected from the group consisting of —

H and a counterion,

an ethylene repeating unit at each occurrence independently linked to an ethylene repeating unit in the same viscosifier polymer molecule or in another molecule of the viscosifier polymer via a —

C(O)—

NH-(substituted or unsubstituted (C₁-C₂₀)hydrocarbylene)-NH—

C(O)—

group, and

an ethylene repeating unit bonded to an —

R²—

O—

R²—

C(—

R²—

OR³)₃ group, wherein at each occurrence R² is independently substituted or unsubstituted (C₁-C₁₀)hydrocarbylene and at each occurrence R³ is independently selected from the group consisting of —

H and -(substituted or unsubstituted (C₁-C₁₀)hydrocarbylene)-M wherein at each occurrence M is independently an ethylene repeating unit of the same viscosifier polymer molecule or an ethylene repeating unit of another molecule of the viscosifier polymer,

wherein the repeating units are in block, alternate, or random configuration.

90-97. -97. (canceled)