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

Patent metadata

Field	Value
Publication number	US-9701889-B2
Application number	US-201213979747-A
Country	US
Kind code	B2
Filing date	Jan 13, 2012
Priority date	Jan 13, 2011
Publication date	Jul 11, 2017
Grant date	Jul 11, 2017

Abstract

A method of treating a siliciclastic, hydrocarbon-bearing formation includes contacting the hydrocarbon-bearing formation with a composition comprising solvent and a fluorinated amine oxide. The method can provide siliciclastic, hydrocarbon-bearing formations treated according to the method.

First claim

What is claimed is:

1. A method of treating a siliciclastic, hydrocarbon-bearing formation, the method comprising contacting the siliciclastic, hydrocarbon-bearing formation with a treatment composition comprising solvent and a fluorinated amine oxide, wherein the fluorinated amine oxide does not have polymeric repeating units comprising amine oxide groups.

2. The method of claim 1 , wherein the siliciclastic, hydrocarbon-bearing formation has at least one fracture, and wherein the fracture has a plurality of proppants therein.

3. The method of 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.

4. The method of claim 1 , wherein the fluorinated amine oxide is represented by formula

wherein
Rf is independently fluoroalkyl having up to 10 carbon atoms or a polyfluoropolyether group;
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.

5. The method of claim 1 , further comprising:
receiving data comprising a temperature and a brine composition of the siliciclastic, hydrocarbon-bearing formation; and
selecting the treatment composition for contacting the siliciclastic, 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.

6. The method of claim 1 , further comprising:
receiving data comprising a temperature and a brine composition of the siliciclastic, hydrocarbon-bearing formation; and
selecting the treatment composition for contacting the siliciclastic, 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.

7. The method of claim 1 , further comprising:
receiving data comprising a temperature and a first brine composition of the siliciclastic, hydrocarbon-bearing formation;
contacting the siliciclastic, hydrocarbon-bearing formation with a fluid, wherein after the fluid contacts the siliciclastic, hydrocarbon-bearing formation, the siliciclastic, hydrocarbon-bearing formation has a second brine composition that is different from the first brine composition; and
selecting the treatment composition for contacting the siliciclastic, 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.

8. The siliciclastic, hydrocarbon-bearing formation treated according to the method of claim 1 .

9. The method of claim 1 , wherein the siliciclastic, hydrocarbon-bearing formation comprises sandstone.

10. The method of claim 1 , wherein the siliciclastic, hydrocarbon-bearing formation has at least one fracture, wherein the at least one fracture has a plurality of proppants therein, and wherein the plurality of proppants comprises ceramic proppants.

11. The method of claim 10 , wherein the plurality of proppants comprises bauxite proppants.

12. The method of 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 or a polyfluoropolyether group;
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)— and optionally substituted by hydroxyl;
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—.

13. The method of claim 12 , 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.

14. The method of claim 12 , 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.

15. The method of claim 12 , wherein Rf is C 3 F 7 O(CF(CF 3 )CF 2 O) x CF(CF 3 )—, C 3 F 7 O(CF 2 CF 2 CF 2 O) x CF 2 CF 2 —, CF 3 O(C 2 F 4 O) y CF 2 —, or CF 3 O(CF 2 O) x′ (C 2 F 4 O) y′ CF 2 —, wherein x has an average value in a range from 3 to 50, and wherein y, x′, and y′ have average values in a range from 6 to 50.

16. A method of treating a siliciclastic, hydrocarbon-bearing formation, the method comprising contacting the siliciclastic, hydrocarbon-bearing formation with a treatment composition comprising solvent and a fluorinated amine oxide, wherein the siliciclastic, hydrocarbon-bearing formation has at least one fracture, wherein the fracture has a plurality of proppants therein, and wherein the fluorinated amine oxide is polymeric and comprises:
a first divalent unit represented by formula

and
a second divalent unit represented by formula

wherein
each Rf 1 is independently fluoroalkyl having up to 10 carbon atoms or a polyfluoropolyether group;
each Q is independently —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)— and optionally substi

Assignees

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

Inventors

• Dams Rudolf J
• Wu Yong K
• Martin Steven J
• Johnson Douglas E

Classifications

• E21B43/16

  Enhanced recovery methods for obtaining hydrocarbons · CPC title

• C09K8/565 Primary

  Oil-based compositions · CPC title

• C09K8/575

  containing organic compounds · CPC title

• C09K8/80

  Compositions for reinforcing fractures, e.g. compositions of proppants used to keep the fractures open · CPC title

• C07C311/05

  to acyclic carbon atoms of hydrocarbon radicals substituted by nitrogen atoms, not being part of nitro or nitroso groups · CPC title