Surfactant for carbon dioxide storage

Patent metadata

Field	Value
Publication number	US-2026071518-A1
Application number	US-202219107537-A
Country	US
Kind code	A1
Filing date	Aug 30, 2022
Priority date	Aug 30, 2022
Publication date	Mar 12, 2026
Grant date	—

Abstract

The invention relates to a method of storing carbon dioxide in a subterranean formation not containing any hydrocarbons, comprising injecting a surfactant into the subterranean formation, injecting carbon dioxide into the subterranean formation, wherein the surfactant is a compound of formula (I), wherein R 1 , R 2 , R 3 , and R 5 are independently a hydrogen atom or an alkyl group, A is an alkylene group, and the total number of carbon atoms in the surfactant compound of formula (I) is from 10 to 24.

First claim

1 . A method of storing carbon dioxide in a subterranean formation not containing any hydrocarbons, comprising:
injecting a surfactant into the subterranean formation; injecting carbon dioxide into the subterranean formation;
wherein the surfactant is a compound of formula (I):

wherein R 1 , R 2 , R 3 , and R 4 are independently a hydrogen atom or an alkyl group, A is an alkylene group, and the total number of carbon atoms in the surfactant compound of formula (I) is from 10 to 24.

2 . The method of claim 1 , wherein the surfactant and the carbon dioxide are injected simultaneously.

3 . The method of claim 1 , further comprising a step of premixing the surfactant and the carbon dioxide to make a CO 2 -surfactant composition, and comprising injecting the CO 2 -surfactant composition into the subterranean formation.

4 . The method of claim 3 , comprising a step of injecting carbon dioxide without surfactant into the subterranean formation after the step of injecting the CO 2 -surfactant composition into the subterranean formation.

5 . The method of claim 1 , wherein no water is injected into the subterranean formation.

6 . The method of claim 1 , wherein the surfactant and the carbon dioxide are injected separately.

7 . The method of claim 1 , further comprising a step of injecting water into the subterranean formation.

8 - 10 . (canceled)

11 . The method of claim 7 , further comprising a step of premixing the surfactant, the carbon dioxide, and the water to make a CO 2 -surfactant-water composition, and comprising injecting this CO 2 -surfactant-water composition into the subterranean formation.

12 . The method of claim 7 , further comprising a step of premixing the surfactant and the carbon dioxide to make a CO 2 -surfactant composition and comprising injecting this CO 2 -surfactant composition into the subterranean formation.

13 . The method of claim 12 , wherein the step of injecting the CO 2 -surfactant composition and the step of injecting the water are carried out alternately.

14 . The method of claim 7 , further comprising a step of premixing the surfactant and water to make a surfactant-water composition and injecting the surfactant-water composition into the subterranean formation.

15 . The method of claim 14 , wherein the step of injecting the carbon dioxide and the step of injecting the surfactant-water composition are carried out alternately.

16 . (canceled)

17 . The method of claim 1 , wherein the injecting step(s) is/are carried out via at least one injection well and wherein the injection well comprises a pipeline for injecting the surfactant, the pipeline being connected to a dosimetric pump.

18 . (canceled)

19 . The method of claim 1 , further comprising a step of collecting water present in the subterranean formation, via at least one production well.

20 . (canceled)

21 . The method of claim 1 , which does not comprise a step of collecting water present in the subterranean formation, via at least one production well.

22 . (canceled)

23 . The method of claim 1 , wherein the total number of carbon atoms in the surfactant compound of formula (I) is from 15 to 22.

24 - 25 . (canceled)

26 . The method of claim 1 , wherein at least one of R 1 , R 2 , R 3 and R 4 is an alkyl group comprising from 8 to 16 carbon atoms.

27 - 28 . (canceled)

29 . The method of claim 1 , wherein A comprises 3 carbon atoms, R 1 is an alkyl group comprising from 6 to 16 carbon atoms, R 2 is a hydrogen atom, R 3 is a methyl group and R 4 is a methyl group.

30 . The method of claim 29 , wherein R 1 is an alkyl group comprising from 10 to 16 carbon atoms.

31 . The method of claim 1 , wherein the compound of formula (I) is selected from N 1 -dodecyl-N 3 ,N 3 -dimethylpropane-1,3-diamine, N 1 -dodecyl-N 1 ,N 3 ,N 3 -trimethylpropane-1,3-diamine, N 1 -(2,2-diethyloctyl)-N 3 ,N 3 -dimethylpropane-1,3-diamine, N 1 -octyl-N 3 ,N 3 -dimethylpropane-1,3-diamine, N 1 -decyl-N 3 ,N 3 -dimethylpropane-1,3-diamine, N 1 -tetradecyl-N 3 ,N 3 -dimethylpropane-1,3-diamine, N 1 -hexadecyl-N 1 ,N 3 ,N 3 -trimethylpropane-1,3-diamine, N 1 -heptadecyl-N 1 ,N 3 ,N 3 -trimethylpropane-1,3-diamine, N 1 -octadecyl-N 1 ,N 3 ,N 3 -trimethylpropane-1,3-diamine, and N-dodecyl-1,3-propanediamine.

32 - 33 . (canceled)

Assignees

• Totalenergies Onetech
• Ecole Superieure Physique & Chimie Ind Ville De Paris
• Univ Sorbonne
• Centre Nat Rech Scient

Inventors

• Klimenko Alexandra
• Blondeau Christophe
• Joly Michèle
• Ding Lei

Classifications

• Y02C20/40

  of CO2 · CPC title

• E21B43/00

  Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells (applicable only to water E03B) · CPC title

• C09K8/594

  Compositions used in combination with injected gas {, e.g. CO2 orcarbonated gas}(C09K8/592 takes precedence) · CPC title

• C09K8/584

  characterised by the use of specific surfactants · CPC title

• B65G5/005

  in porous layers · CPC title