Polymeric ionic liquid clay control agents

Patent metadata

Field	Value
Publication number	US-10351760-B2
Application number	US-201415318226-A
Country	US
Kind code	B2
Filing date	Jul 15, 2014
Priority date	Jul 15, 2014
Publication date	Jul 16, 2019
Grant date	Jul 16, 2019

Abstract

Polymeric clay stabilizers including at least one ionic repeating unit for treatment of subterranean formations. A method of treating a subterranean formation that can include obtaining or providing a composition comprising including a polymeric clay stabilizer including at least one ionic repeating unit, wherein the clay stabilizer has a melting point or glass transition temperature that is equal to or less than 100° C. The method can also include placing the composition in a subterranean formation.

First claim

What is claimed is:

1. A method of treating a subterranean formation, comprising:
placing a composition comprising a polymeric clay stabilizer into the subterranean formation,
wherein the polymeric clay stabilizer comprises at least one ionic repeating unit,
wherein the ionic repeating unit is about 50 mol % to 99.99 mol % of the total repeating units in the clay stabilizer, and
wherein the clay stabilizer has a melting point or glass transition temperature that is equal to or less than 100° C.

2. The method of claim 1 , wherein the clay stabilizer is at least partially dissolved in a water-phase or an oil-phase of an emulsion.

3. The method of claim 1 , wherein the composition comprises a carrier fluid, and wherein the carrier fluid is about 50 wt % to about 99.999 wt % of the composition.

4. The method of claim 1 , wherein the melting point of the clay stabilizer is less than 30° C., or wherein the glass transition temperature of the clay stabilizer is about −100° C. to about 50° C.

5. The method of claim 1 , wherein the ionic repeating unit has the structure:

wherein:
A is selected from the group consisting of a substituted or unsubstituted (C 2 -C 20 )hydrocarbylene interrupted or terminated by 0, 1, 2, or 3 atoms selected from the group consisting of —O—, —S—, and substituted or unsubstituted —NH—, a substituted or unsubstituted (C 1 -C 10 )heterocycle comprising at least one O, N, or S atom, and a substituted or unsubstituted siloxane or polysiloxane,
L 1 and L 2 are each independently selected from the group consisting of a bond, a poly(oxy(substituted or unsubstituted (C 2 -C 20 )hydrocarbylene)), a substituted or unsubstituted siloxane or polysiloxane, and a substituted or unsubstituted (C 1 -C 20 )hydrocarbylene interrupted or terminated by 0, 1, 2, or 3 atoms selected from the group consisting of —O—, —S—, a substituted or unsubstituted —NH—, and a substituted or unsubstituted —BH—, and
IG is a substituted or unsubstituted ionic group charge balanced by a counterion.

6. The method of claim 5 , wherein A is selected from the group consisting of:

wherein R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , and R 7 are each independently selected from the group consisting of —H, halide, and substituted or unsubstituted (C 1 -C 20 )hydrocarbyl interrupted by 0, 1, 2, or 3 atoms selected from the group consisting of —O—, —S—, and substituted or unsubstituted —NH.

7. The method of claim 6 , wherein R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , and R 7 are each independently selected from the group consisting of —H, methyl, and methoxy.

8. The method of claim 5 , wherein L 1 is selected from the group consisting of —C(O)O-L 3 -, C(O)NH-L 3 -, and —Ph-L 3 -, wherein L 3 is selected from the group consisting of a bond and a (C 1 -C 10 )alkylene interrupted or terminated by 0, 1, 2, or 3 atoms selected from the group consisting of —O— and a substituted or unsubstituted —NH—.

9. The method of claim 8 , wherein L 3 is selected from the group consisting of a bond and a (C 1 -C 10 )alkylene.

10. The method of claim 5 , wherein at each occurrence L 2 is independently a substituted or unsubstituted (C 1 -C 20 )alkylene interrupted or terminated by 0, 1, 2, or 3 atoms selected from the group consisting of —O—, —S—, a substituted or unsubstituted —NH—, and a substituted or unsubstituted —BH—.

11. The method of claim 5 , wherein the ionic group of IG is selected from the group consisting of a substituted or unsubstituted imidazolium, a substituted or unsubstituted pyridinium, a substituted or unsubstituted pyrrolidinium, a substituted or unsubstituted ammonium, a substituted or unsubstituted phosphonium, a carboxylate, a sulfonate, a phosphonate, and a substituted or unsubstituted guanidinium, wherein the ionic group comprises 0 or 1 bonds to another ionic group or to L 1 or L 2 of the same or a different polymer molecule.

12. The method of claim 5 , wherein the ionic group of IG is selected from the group consisting of —SO 3 − Y + , —PO 3 − Y + , —COO − Y + ,

wherein:
R 8 , R 9 , R 10 , R 11 , R 12 , R 13 , R 14 , R 15 , R 16 , R 17 , R 18 , R 19 , R 20 , R 21 , R 22 , and R 23 are each independently selected from the group consisting of —H, halide, and substituted or unsubstituted (C 1 -C 20 )hydrocarbyl interrupted by 0, 1, 2, or 3 atoms selected from the group consisting of —O—, —S—, and substituted or unsubstituted —NH, and X − or Y + is the counterion.

13. The method of claim 12 , wherein R 8 , R 9 , R 10 , R 11 , R 12 , R 13 , R 14 , R 15 , R 16 , R 17 , R 18 , R 19 , R 20 , R 21 , R 22 and R 23 are each independently selected from the group consisting of —H, methyl, methoxy, ethyl, ethoxy, propyl, propoxy, butyl, and butoxy.

14. The method of claim 5 , wherein the ionic repeating group has the structure:

wherein:
R 8 , R 11 , R 12 , R 18 and R 19 are each independently selected from the group consisting of —H, substituted or unsubstituted (C 1 -C 20 )alkyl, and substituted or unsubstituted (C 1 -C 20 )alkoxy, and
X − is the counterion.

15. The method of claim 5 , wherein the ionic repeating group has a structure selected from the group consisting of:

wherein:
L 3 is selected from the group consisting of a bond and a (C 1 -C 10 )alkylene interrupted or terminated by 0, 1, 2, or 3 atoms selected from the group consisting of —O— and a substituted or unsubstituted —NH—.

16. A method of treating a subterranean formation, comprising:
placing a drilling fluid, fracturing fluid, or cementing fluid into the subterranean formation,
wherein the drilling fluid, fracturing fluid, or cementing fluid comprises about 0.001 wt % to about 10 wt % of a polymeric clay stabilizer comprising at least one ionic repeating unit that is about 50 mol % to 100 mol % of the total repeating units in the clay stabilizer, the clay stabilizer having a melting point or glass transition temperature that is equal to or less than 30° C.,
wherein the ionic repeating unit has the structure:

wherein:
A is selected from the group consisting of a substituted or unsubstituted (C 2 -C 20 )hydrocarbylene interrupted or terminated by 0, 1, 2, or 3 atoms selected from the group consisting of —O—, —S—, and substituted or unsubstituted —NH—, a substituted or unsubstituted (C 1 -C 10 )heterocycle comprising at least one O, N, or S atom, and a substituted or unsubstituted siloxane or polysiloxane,
L 1 and L 2 are each independently selected from the group consisting of a bond, a poly(oxy(substituted or unsubstituted (C 2 -C 20 )hydrocarbylene)), a substituted or unsubstituted siloxane or polysiloxane, and a substituted or unsubstituted (C 1 -C 20 )hydrocarbylene interrupted or terminated by 0, 1, 2, or 3 atoms selected from the group consisting of —O—, —S—, a substituted or unsubstituted —NH—, and a substituted or unsubstituted —BH—, and
IG is a substituted or unsubstituted ionic group charge balanced by a counterion.

17. A system for p

Assignees

• Halliburton Energy Services Inc

Inventors

• Schultheiss Nathan Carl
• Oliveira Humberto Almeida
• Palla-Venkata Chandra Sekhar
• Lu Zheng

Classifications

• C09K8/62

  Compositions for forming crevices or fractures · CPC title

• E21B33/14

  for cementing casings into boreholes · CPC title

• E21B21/00

  Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor (freeing objects stuck in boreholes by flushing E21B31/03) · CPC title

• C09K8/608 Primary

  Polymer compositions · CPC title

• C09K8/035

  Organic additives · CPC title