Methods for treating carbonate hydrocarbon-bearing formations with fluorinated amine oxides

Patent metadata

Field	Value
Publication number	US-9624422-B2
Application number	US-201113996143-A
Country	US
Kind code	B2
Filing date	Dec 20, 2011
Priority date	Dec 20, 2010
Publication date	Apr 18, 2017
Grant date	Apr 18, 2017

Abstract

A method of treating a carbonate hydrocarbon-bearing formation is disclosed. The method includes contacting the hydrocarbon-bearing formation with a composition comprising solvent and a fluorinated amine oxide. Carbonate hydrocarbon-bearing formations treated according to the method are also disclosed.

First claim

What is claimed is:

1. A method of treating a hydrocarbon-bearing formation, the method comprising contacting the hydrocarbon-bearing formation with a treatment composition comprising solvent and a fluorinated amine oxide, wherein a surface of the hydrocarbon-bearing formation comprises a carbonate, and wherein the fluorinated amine oxide is non-polymeric.

2. A method according to claim 1 , wherein the solvent comprises at least one of water, a monohydroxy alcohol, an ether, a ketone, a glycol, a glycol ether, or supercritical carbon dioxide.

3. A method according to claim 1 , wherein the fluorinated amine oxide is represented by formula Rf-Q-N(R) 2 —O,
wherein
Rf is independently fluoroalkyl having up to 10 carbon atoms;
Q is —SO 2 —N(R′)—W—, —C(O)—N(R′)—W—, alkylene, arylalkylene, or arylene, wherein alkylene and arylalkylene are each optionally interrupted by —O—, —S—, —SO 2 — or —C(O)—;
R′ is hydrogen, alkyl having up to six carbon atoms, or aryl;
W is alkylene, arylalkylene, or arylene, wherein alkylene and arylalkylene are each optionally interrupted by —O— or —S— and optionally substituted by hydroxyl; and
each R is independently hydrogen, alkyl, or aryl, wherein alkyl may optionally be interrupted by —O— or substituted with hydroxyl or aryl, or two R groups taken together with the N atom to which they are attached can form a heterocyclic ring having up to six carbon atoms and optionally containing —O— or —S—.

4. A method according to claim 3 , wherein Rf is perfluoroalkyl having up to 6 carbon atoms, Q is —SO 2 —N(R′)—W— or alkylene having up to four carbon atoms, wherein R′ is hydrogen or alkyl having up to four carbon atoms, wherein W is alkylene having up to 4 carbon atoms, and wherein R is alkyl having up to four carbon atoms.

5. A method according to claim 1 , wherein the fluorinated amine oxide is represented by formula Rf-Q-N(R) 2 —O,
wherein Rf is selected from the group consisting of:
Rf a —(O) r —CHF—(CF 2 ) n′ —;

[Rf b —(O) t —C(L)H—CF 2 —O] m —W″—;

CF 3 CFH—O—(CF 2 ) p′ —;

CF 3 —(O—CF 2 ) z —; and

CF 3 —O—(CF 2 ) 3 —O—CF 2 —;

wherein
Rf a and Rf b independently represent a partially or fully fluorinated alkyl group having from 1 to 10 carbon atoms and optionally interrupted with at least one oxygen atom;
L is selected from the group consisting of F and CF 3 ;
W″ is selected from the group consisting of alkylene and arylene;
r is 0 or 1, wherein when r is 0, then Rf a is interrupted with at least one oxygen atom;
t is 0 or 1;
m is 1, 2, or 3;
n′ is 0 or 1;
each p′ is independently an integer from 1 to 6; and
z is an integer from 2 to 7;
wherein Q is —CO—N(R′)—W—, wherein R′ is hydrogen or alkyl having up to four carbon atoms, wherein W is alkylene having up to 4 carbon atoms, and wherein R is alkyl having up to four carbon atoms.

6. A method according to claim 1 , wherein the fluorinated amine oxide is represented by formula

wherein
Rf is independently fluoroalkyl having up to 10 carbon atoms;
Q′ is —SO 2 N(—)(—), —(CH 2 ) p CH(O—)(—), or —(CH 2 ) p —CH(O—)(CH 2 ) p O—, where p is an integer of 1 to 11;
W′ is alkylene, arylalkylene, or arylene, wherein alkylene and arylalkylene are each optionally interrupted by —O— or —S— and optionally substituted by hydroxyl;
each R is independently hydrogen, alkyl, or aryl, wherein alkyl may optionally be interrupted by —O— or substituted with hydroxyl or aryl, or two R groups taken together with the N atom to which they are attached can form a heterocyclic ring having up to six carbon atoms and optionally containing —O— or —S—; and
each n is independently 0 to 11.

7. A method according to claim 1 , further comprising:
receiving data comprising a temperature and a brine composition of the hydrocarbon-bearing formation; and
selecting the treatment composition for treating the hydrocarbon-bearing formation, wherein, at the temperature, a mixture of an amount of the brine composition and the treatment composition is transparent and free of precipitated solid, and wherein the mixture does not separate into layers.

8. A method according to claim 1 , further comprising:
receiving data comprising a temperature and a brine composition of the hydrocarbon-bearing formation; and
selecting the treatment composition for treating the hydrocarbon-bearing formation, wherein, at the temperature, a mixture of the brine composition and the treatment composition separates into at least two separate transparent liquid layers, and wherein the mixture is free of precipitated solid.

9. A method according to claim 1 , further comprising:
receiving data comprising a temperature and a first brine composition of the hydrocarbon-bearing formation;
contacting the hydrocarbon-bearing formation with a fluid, wherein after the fluid contacts the hydrocarbon-bearing formation, the hydrocarbon-bearing formation has a second brine composition that is different from the first brine composition; and
selecting the treatment composition for treating the hydrocarbon-bearing formation, wherein, at the temperature, a mixture of an amount of the second brine composition and the treatment composition is transparent and free of precipitated solid, and wherein the mixture does not separate into layers.

10. A method according to claim 1 , the method further comprising fracturing the hydrocarbon-bearing formation, wherein contacting the hydrocarbon-bearing formation with the treatment composition is carried out during the fracturing, after the fracturing, or during and after the fracturing.

11. A method according to claim 1 , wherein the method does not include intentionally fracturing the hydrocarbon-bearing formation.

12. A method according to claim 1 , wherein the fluorinated amine oxide is present in the treatment composition in at up to 2 weight percent, based on the total weight of the treatment composition.

13. A method according to claim 1 , wherein the hydrocarbon-bearing formation is a gas producing formation penetrated by a wellbore, and wherein a region near the wellbore is contacted with the treatment composition.

14. A method according to claim 1 , wherein the hydrocarbon-bearing formation comprises limestone.

15. A method according to claim 1 , wherein before contacting the hydrocarbon-bearing formation with the treatment composition, the hydrocarbon-bearing formation has retrograde gas condensate, volatile oil, or black oil, and wherein the hydrocarbon-bearing formation has an increase in at least a gas permeability after it is contacted with the treatment composition.

16. A method according to claim 1 , wherein the hydrocarbon-bearing formation has at least one fracture, and wherein the at least one fracture has a plurality of proppants therein.

17. A method according to claim 16 , wherein the proppants comprise ceramic proppants.

18. A method according to claim 17 , wherein the proppants comprise bauxite proppants.

19. A method according to claim 1 , wherein the fluorinated amine oxide is adsorbed on the hydrocarbon-bearing formation.

20. A hydrocarbon-bearing formation treated according to the method of claim 1 .

Assignees

• Dams Rudolf J
• Wu Yong K
• Martin Steven J
• 3M Innovative Properties Co

Inventors

• Dams Rudolf J
• Wu Yong K
• Martin Steven J

Classifications

• C09K8/68

  containing organic compounds · CPC title

• C09K8/5751

  Macromolecular compounds (C09K8/5756 takes precedence) · CPC title

• C09K8/604

  Polymeric surfactants · CPC title

• C09K8/035 Primary

  Organic additives · CPC title

• C09K8/60 Primary

  Compositions for stimulating production by acting on the underground formation · CPC title