Polymeric ionic liquid clay control agents

Patent metadata

Field	Value
Publication number	US-2017190954-A1
Application number	US-201415318226-A
Country	US
Kind code	A1
Filing date	Jul 15, 2014
Priority date	Jul 15, 2014
Publication date	Jul 6, 2017
Grant date	—

Abstract

Various embodiments disclosed relate to polymeric clay stabilizers including at least one ionic repeating unit for treatment of subterranean formations. In various embodiments, the present invention provides 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

1 - 84 . (canceled)

85 . 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.

86 . The method of claim 85 , wherein the clay stabilizer is at least partially dissolved in a water-phase or an oil-phase of an emulsion.

87 . The method of claim 85 , wherein the composition comprises a carrier fluid, and wherein the carrier fluid is about 50 wt % to about 99.999 wt % of the composition.

88 . The method of claim 85 , 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.

89 . The method of claim 85 , 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.

90 . The method of claim 89 , 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.

91 . The method of claim 90 , 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.

92 . The method of claim 89 , 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—.

93 . The method of claim 92 , wherein L 3 is selected from the group consisting of a bond and a (C 1 -C 10 )alkylene.

94 . The method of claim 89 , 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—.

95 . The method of claim 89 , 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.

96 . The method of claim 89 , 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.

97 . The method of claim 96 , 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.

98 . The method of claim 89 , 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.

99 . The method of claim 89 , 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—.

100 . 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 c

Assignees

• Halliburton Energy Services Inc

Inventors

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

Classifications

• E21B33/14

  for cementing casings into boreholes · CPC title

• C09K8/42

  Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells (compositions for plastering C09K8/50) · 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

• E21B43/26

  by forming crevices or fractures · CPC title

• C09K8/62

  Compositions for forming crevices or fractures · CPC title