Spread crosslinker and method

Patent metadata

Field	Value
Publication number	US-9499733-B2
Application number	US-201414319627-A
Country	US
Kind code	B2
Filing date	Jun 30, 2014
Priority date	Jun 29, 2012
Publication date	Nov 22, 2016
Grant date	Nov 22, 2016

Abstract

A crosslinker composition including a spread crosslinker for treating a subterranean formation is provided along with methods of sealing a subterranean formation including introducing a crosslinkable fluid, the crosslinkable fluid containing a spread crosslinker and a crosslinkable component, into a subterranean formation.

First claim

What is claimed is:

1. A fluid for treating a subterranean formation comprising:
a solvent;
a crosslinkable component; and
a crosslinking composition comprising a spread crosslinker, the spread crosslinker having a plurality of headgroups separated by an intervening spacer that is covalently bound to the plurality of headgroups, wherein
each of the plurality of headgroups comprises at least one ring of at least five atoms, where at least two of the atoms in the at least one ring of the plurality of headgroups are chelated polyvalent metal atoms.

2. The fluid for treating a subterranean formation of claim 1 , wherein the at least two chelated polyvalent metal atoms of the plurality of headgroups are
the same or different, and
selected from the group consisting of aluminum, zirconium, and titanium.

3. The fluid for treating a subterranean formation of claim 1 , wherein the spread crosslinker has three or four headgroups.

4. The fluid for treating a subterranean formation of claim 1 , wherein the intervening spacer is:
an alkylene group having 1 to about 40 carbon atoms;
an arylene group having about 5 to about 40 carbon atoms;
an arylalkylene group having about 6 to about 40 carbon atoms; or
an alkylarylene group having about 6 to about 40 carbon atoms.

5. The fluid for treating a subterranean formation of claim 1 , wherein the spread crosslinker has a first headgroup, a second headgroup and a third headgroup,
the first headgroup contains two or more rings with each ring containing five, six, or seven atoms;
the second headgroup contains two or more rings with each ring containing five, six, or seven atoms; and/or
the third headgroup contains two or more rings with each ring containing five, six, or seven atoms.

6. The fluid for treating a subterranean formation of claim 1 , wherein the spread crosslinker comprises one or more compounds derived from a reaction of one or more chelating agents with a compound of formula V:

where
R 1 is:
an alkylene group having 1 to about 40 carbon atoms,
an arylene group having about 5 to about 40 carbon atoms,
an arylalkylene group having about 6 to about 40 carbon atoms, or
an alkylarylene group having about 6 to about 40 carbon atoms; and

R 2 , R 3 , R 4 , R 5 , R 6 and R 7 may be the same or different, and are selected from the group consisting of aluminum, zirconium, and titanium.

7. The fluid for treating a subterranean formation of claim 6 , wherein the one or more chelating agent is selected from the group consisting of carboxylic acids, aminocarboxylic acids, polyols, alkanolamines, glutamic acid, lactic acid, triethanolamine, alanine, aspartic acid, oxalic acid, acetylacetonate, fumaric acid, bis-hydroxyethylglycine, maleic acid, tartaric acid, citric acid, nitrilotriacetic acid, hydroxyethyliminodiacetic acid, hydroxyethylethylenediaminetetraacetic acid, ethylenediaminetetraacetic acid, cyclohexylenediaminetetraacetic acid, diethylenetriamine-pentaacetic, hydroxyethylethylenediaminetriacetic acid, diethylenetriaminepentaacetic acid, propylenediaminetetraacetic acid, ethylenediaminedi(o-hydroxyphenylacetic) acid, ammonium salts thereof, lithium salts thereof, sodium salts thereof, and mixtures thereof.

8. The fluid for treating a subterranean formation of claim 1 , wherein the spread crosslinker comprises one or more compounds derived from a reaction of one or more chelating agents with a compound of formula VI:

where R 1 is:
an alkylene group having 1 to about 40 carbon atoms,
an arylene group having about 5 to about 40 carbon atoms,
an arylalkylene group having about 6 to about 40 carbon atoms, or
an alkylarylene group having about 6 to about 40 carbon atoms.

9. The fluid for treating a subterranean formation of claim 1 , wherein the spread crosslinker comprises one or more compounds derived from a reaction of one or more chelating agents with a compound of formula VII:

where
R 1 is:
an alkylene group having 1 to about 40 carbon atoms,
an arylene group having about 5 to about 40 carbon atoms,
an arylalkylene group having about 6 to about 40 carbon atoms, or
an alkylarylene group having about 6 to about 40 carbon atoms; and

R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 8 and R 9 may be the same or different, and are selected from the group consisting of aluminum, zirconium, and titanium.

10. The fluid for treating a subterranean formation of claim 1 , wherein the spread crosslinker comprises one or more compounds derived from a reaction of one or more chelating agents with a compound of formula VIII:

where R 1 is:
an alkylene group having 1 to about 40 carbon atoms,
an arylene group having about 5 to about 40 carbon atoms,
an arylalkylene group having about 6 to about 40 carbon atoms, or
an alkylarylene group having about 6 to about 40 carbon atoms.

11. The fluid for treating a subterranean formation of claim 1 , wherein the crosslinkable component comprises a guar gum, a locust bean gum, a tara gum, a honey locust gum, a tamarind gum, a karaya gum, an arabic gum, a ghatti gum, a tragacanth gum, a carrageenen, a succinoglycan, a xanthan, a diutan, a hydroxylethylguar hydroxypropyl guar, a carboxymethylhydroxyethyl guar, a carboxymethylhydroxypropylguar, an alkylcarboxyalkyl cellulose, an alkyl cellulose, an alkylhydroxyalkyl cellulose, a carboxyalkyl cellulose ether, a hydroxyethylcellulose, a carboxymethylhydroxyethyl cellulose, a carboxymethyl starch, a copolymer of 2-acrylamido-2methyl-propane sulfonic acid and acrylamide, a terpolymer of 2-acrylamido-2methyl-propane sulfonic acid, acrylic acid, acrylamide, or derivative thereof.

12. The fluid for treating a subterranean formation of claim 1 , further comprising one or more components selected from the group consisting of a gel breaker, a buffer, a proppant, a clay stabilizer, a gel stabilizer, a surfactant and a bactericide.

13. A method of treating a subterranean zone penetrated by a well bore comprising: providing a subterranean treating fluid comprising:
a solvent,
a crosslinkable component, and
a crosslinking composition comprising a spread crosslinker, the spread crosslinker having a plurality of headgroups separated by an intervening spacer that is covalently bound to the plurality of headgroups, wherein
each of the plurality of headgroups comprises at least one ring of at least five atoms, where at least two of the atoms in the at least one ring of the plurality of headgroups are chelated polyvalent metal atoms; and

contacting the subterranean zone with the subterranean treating fluid.

14. The method of claim 13 , wherein the spread crosslinker comprises one or more compounds obtained by reacting one or more chelating agents with a compound of formula V:

where
R 1 is:
an alkylene group having 1 to about 40 carbon atoms,
an arylene group having about 5 to about 40 carbon atoms,
an arylalkylene group having about 6 to about 40 carbon atoms, or
an alkylarylene group having about 6 to about 40 carbon atoms; and

R 2 , R 3 , R 4 , R 5 , R 6 and R 7 may be the same or different, and are selected from the group consisting

Assignees

• Schlumberger Technology Corp

Inventors

• Parris Michael D

Classifications

• C07F7/003

  without C-Metal linkages · CPC title

• C09K8/5083

  obtained by reactions only involving carbon-to-carbon unsaturated bonds · CPC title

• C09K8/685

  containing cross-linking agents · CPC title

• C09K8/512

  containing cross-linking agents · CPC title

• C09K8/887

  containing cross-linking agents · CPC title