Compositions and methods for stabilizing water sensitive clays and migrating fines in subterranean formations

Patent metadata

Field	Value
Publication number	US-11208590-B2
Application number	US-201715800424-A
Country	US
Kind code	B2
Filing date	Nov 1, 2017
Priority date	Nov 1, 2016
Publication date	Dec 28, 2021
Grant date	Dec 28, 2021

Abstract

Clay stabilization compositions include one or a plurality of triamino compounds and/or derivatives thereof, fluids containing an effective amount of the clay stabilization compositions and methods for making and using same.

First claim

We claim:

1. A clay stabilizing composition comprising:
one or more tri-functional primary amine compounds comprise one or more compounds of Formula I:
HC(RNR 1 R 2 )(R′NR 3 R 4 )(R″NR 5 R 6 )  (I)

and
one or more salts comprise one or more compounds of Formula II:
HC(RN + R 1 R 2 R 7 )(R′N + R 3 R 4 R 8 )(R″N + R 5 R 6 R 9 )X n   (II)

wherein:
the R, R′, and R″ groups are the same or different that are hydrocarbyl linking groups having between 1 and 8 carbon atoms,
when the R, R′, and R″ groups include 2 to 8 carbon atoms, then one or more carbon atoms may be replaced by acetate groups, or carbonyl groups,

the R 1-6 groups are the same or different and are hydrogen atoms or hydrocarbyl groups including from 1 to 6 carbon atoms,
when the R 1-6 groups include 2 to 6 carbon atoms, then one or more carbon atoms may be replaced by oxygen atoms, acetate groups, or carbonyl groups,

the R 7-9 groups are the same or different and are: (a) absent and their associated nitrogen atoms would not bear a charge, (b) a hydrogen atom and their associated nitrogen atoms would bear a charge, or (c) a hydrocarbyl group including from 1 to 24 carbon atoms and their associated nitrogen atoms would bear a charge;
provided that at least one of the R 7-9 groups is a hydrogen atom or a hydrocarbyl group, and
when the R 7-9 groups include 2 to 24 carbon atoms, then one or more carbon atoms may be replaced by oxygen atoms, acetate groups, or carbonyl groups, and

the X groups are the same or different counterions derived from an organic acid, an alkylating agent, a quaternizing agent, or mixtures thereof,
n is an integer having a value of 1, 2 or 3 so that each of the compounds of Formula (II) is neutral, and
the composition, when added to a drilling fluid, a fracturing fluid, or a stimulation fluid, stabilizes clay, reduces clay swelling and reduces fines migration during drilling, fracturing, or stimulating operations of a subterranean formation.

2. The composition of claim 1 , wherein:
the R, R′, and R″ groups are the same or different and are linear alkyl linking groups of the formula —(CH 2 ) m —, and
m is an integer having a value between 1 and 8, and
when m has a value between 2 and 8, then one or more carbon atoms may be replaced by oxygen atoms.

3. The composition of claim 1 , wherein:
the R group is a linear alkyl linking group having between 1 and 3 carbon atoms,
the R′ group is linear alkyl linking group having between 2 and 4 carbon atoms, and
the R″ group is linear alkyl linking groups having between 3 and 5 carbon atoms.

4. The composition of claim 1 , wherein:
the organic acid is selected from the group consisting of formic acid, acetic acid, citric acid, lactic acid, fumaric acid, and mixtures thereof,
the alkylating agent is selected from the group consisting of:
(a) dialkylsulfates, wherein alkyl groups of the dialkylsulfates are the same or different and between 1 and 6 carbon atoms,
(b) chloroalkylbenzenes, wherein an alkyl group of the chloroalkylbenzenes has between 1 and 6 carbon atoms,
(c) alkylchlorides, wherein an alkyl group of the alkylchlorides has between 1 and 24 carbon atoms,
(d) chloroethers having between 4 and 24 carbon atoms,
(e) alkylsulfonates, wherein an alkyl group of the alkylsulfonates is a straight chain alkyl group, a branched alkyl group, or a cyclic alkyl group having between 1 to 24 carbon atoms, and
(f) mixtures or combinations thereof, and

the quaternizing agent is selected from the group consisting of:
(a) the dialkylsulfates,
(b) the chloroalkylbenzenes,
(c) the alkylchlorides,
(d) the chloroethers,
(e) the alkylsulfonates, and
(f) mixtures or combinations thereof.

5. The composition of claim 1 , wherein the one or more compounds of Formula I comprises the compound of Formula III:

6. The composition of claim 1 , wherein the one or more compounds of Formula II comprises one or more compounds of Formula IV:

7. The composition of claim 1 , wherein the one or more compounds of Formula I comprises one or more compounds Formula V:

8. The composition of claim 1 , wherein the one or more compounds of Formula II comprises one or more compounds of Formula VI:

and/or one or more compounds of Formula VII:

9. A composition comprising:
a downhole fluid, and
an effective amount of a clay stabilizing composition comprising:
one or more tri-functional primary amine compounds comprise one or more compounds of Formula I:
HC(RNR 1 R 2 )(R′NR 3 R 4 )(R″NR 5 R 6 )  (I)

and
one or more salts comprise one or more compounds of Formula II:
HC(RN + R 1 R 2 R 7 )(R′N + R 3 R 4 R 8 )(R″N + R 5 R 6 R 9 )X n   (II)

wherein:
the R, R′, and R″ groups are the same or different that are hydrocarbyl linking groups having between 1 and 8 carbon atoms,
when the R, R′, and R″ groups include 2 to 8 carbon atoms, then one or more carbon atoms may be replaced by acetate groups, or carbonyl groups,

the R 1-6 groups are the same or different and are hydrogen atoms or hydrocarbyl groups including from 1 to 6 carbon atoms,
when the R 1-6 groups include 2 to 6 carbon atoms, then one or more carbon atoms may be replaced by oxygen atoms, acetate groups, or carbonyl groups,

the R 7-9 groups are the same or different and are: (a) absent and their associated nitrogen atoms would not bear a charge, (b) a hydrogen atom and their associated nitrogen atoms would bear a charge, or (c) a hydrocarbyl group including from 1 to 24 carbon atoms and their associated nitrogen atoms would bear a charge:
provided that at least one of the R 7-9 groups is a hydrogen atom or a hydrocarbyl group, and
when the R 7-9 groups include 2 to 24 carbon atoms, then one or more carbon atoms may be replaced by oxygen atoms, acetate groups, or carbonyl groups, and

the X groups are the same or different counterions derived from an organic acid, an alkylating agent, a quaternizing agent, or mixtures thereof,
n is an integer having a value of 1, 2 or 3 so that each of the compounds of Formula (II) is neutral,
the clay stabilizing composition stabilizes clay, reduces clay swelling, and reduces fines migration during drilling, fracturing or stimulating operations of a subterranean formation, and
the downhole fluid comprises a drilling fluid, a fracturing fluid, or a stimulation fluid.

10. The composition of claim 9 , wherein:
the R, R′, and R″ groups are the same or different and are linear alkyl linking groups of the formula —(CH 2 ) m —, and
m is an integer having a value between 1 and 8, and
when m has a value between 2 and 8, then one or more carbon atoms may be replaced by oxygen atoms.

11. The composition of claim 9 , wherein:
the R group is a linear alkyl linking group having between 1 and 3 carbon atoms,
the R′ group is linear alkyl linking group having between 2 and 4 carbon atoms, and
the R″ group is linear alkyl linking groups having between 3 and 5 carbon atoms.

12. The composition of claim 9 , wherein:
the organic acid is selected from the group consisting of formic acid, acetic acid, citric acid, lactic acid, fumaric acid, and mixtures thereof,
t

Assignees

• Pfp Tech Llc
• Ascend Performance Mat Operations Llc

Inventors

• Hikem Aziz
• Chetty Madhukar
• Vaughn Derek
• Taranekar Prasad
• Balko Jeffery W

Classifications

• C09K8/86

  containing organic compounds · CPC title

• C09K8/607

  specially adapted for clay formations · CPC title

• C09K2208/12

  Swell inhibition, i.e. using additives to drilling or well treatment fluids for inhibiting clay or shale swelling or disintegrating · CPC title

• C09K8/575 Primary

  containing organic compounds · CPC title

• C07C55/02

  Dicarboxylic acids · CPC title