Maleic anhydride polymers and methods of treating subterranean formations
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C09J-135/02
C09K-008/508
C09K-008/512
C09J-123/22
E21B-033/14
C09K-008/035
C09K-008/50
C09K-008/42
출원번호
US-0263895
(2016-09-13)
등록번호
US-10160902
(2018-12-25)
발명자
/ 주소
Reddy, B. Raghava
출원인 / 주소
Saudi Arabian Oil Company
대리인 / 주소
Fish & Richardson P.C.
인용정보
피인용 횟수 :
0인용 특허 :
22
초록▼
This document relates to compositions including a maleic anhydride copolymer or a salt thereof and an amine crosslinker. The maleic anhydride copolymer includes repeat units I and II: Each R1 is independently selected from the group consisting of —H, —O(C1-C5)alkyl, and —(C1-C5)alkyl. Each R2 is in
This document relates to compositions including a maleic anhydride copolymer or a salt thereof and an amine crosslinker. The maleic anhydride copolymer includes repeat units I and II: Each R1 is independently selected from the group consisting of —H, —O(C1-C5)alkyl, and —(C1-C5)alkyl. Each R2 is independently selected from the group consisting of —H, —O(C1-C5)alkyl, and —(C1-C5)alkyl. The maleic anhydride copolymer further includes at least one hydrolyzed repeat unit selected from repeat units III and IV:
대표청구항▼
1. A composition comprising: a water-soluble maleic anhydride copolymer comprising: repeat units I and II: wherein the maleic anhydride copolymer is an alternating copolymer, with alternating repeat units I and II, each R1 is independently selected from the group consisting of —H, —O(C1-C5)alkyl, an
1. A composition comprising: a water-soluble maleic anhydride copolymer comprising: repeat units I and II: wherein the maleic anhydride copolymer is an alternating copolymer, with alternating repeat units I and II, each R1 is independently selected from the group consisting of —H, —O(C1-C5)alkyl, and (C1-C5)alkyl, and each R2 is independently selected from the group consisting of —H, —O(C1-C5)alkyl, and —(C1-C5)alkyl; and at least one hydrolyzed repeat unit selected from repeat units III and IV: or a salt thereof;an amine crosslinker;an aqueous carrier, anda salt from about 1% to about 10% by weight of the composition,wherein when the composition is crosslinked, the composition forms a sealant in the form of a gel, andwherein an amount of the maleic anhydride copolymer and amine crosslinker is about 5% to about 10% by weight of the composition. 2. The composition of claim 1, wherein the at least one hydrolyzed repeat unit comprises repeat unit III. 3. The composition of claim 2, wherein the ratio of repeat unit III to repeat unit II is about 1:10 to about 10:1. 4. The composition of claim 1, wherein the at least one hydrolyzed repeat unit comprises repeat unit IV. 5. The composition of claim 4, wherein the ratio of repeat unit IV to repeat unit II is about 1:10 to about 10:1. 6. The composition of claim 1, wherein the at least one hydrolyzed repeat unit comprises at least two hydrolyzed repeat units, and the at least two hydrolyzed repeat units comprise repeat unit III and repeat unit IV. 7. The composition of claim 6, wherein the ratio of repeat unit III to repeat unit II is about 1:10 to about 10:1, and the ratio of repeat unit IV to repeat unit II is about 1:10 to about 10:1. 8. The composition of claim 1, wherein each R1 is independently selected from the group consisting of —H, —OCH3, and —CH3, andeach R2 is independently selected from the group consisting of —H, —OCH3, and —CH3. 9. The composition of claim 8, wherein each R1 is H, andeach R2 is independently selected from the group consisting of —H, —OCH3, and —CH3. 10. The composition of claim 9, wherein repeat unit I is selected from the group consisting of: and combinations thereof. 11. The composition of claim 1, wherein the amine crosslinker is selected from the group consisting of a polyalkyleneimine, a polyetheramine, a polyalkylenepolyamine, an aliphatic amine, a polyfunctional aliphatic amine, an arylalkylamine, a heteroarylalkylamine, a chitosan, and combinations thereof. 12. The composition of claim 1, wherein the salt is selected from NaCl, NaBr, KCl, KBr, CaCl2, MgCl2, NaNO3, KNO3, NaC2H3O2, KC2H3O2, NaCHO2, KCHO2, and combinations thereof. 13. The composition of claim 1, wherein the salt is NaCl or KCl. 14. The composition of claim 1, wherein the amount of the salt is 2%, 4%, 4.5%, 7%, or 8% based on the weight of the composition. 15. The composition of claim 1, wherein: the at least one hydrolyzed repeat unit comprises repeat unit III;the ratio of repeat unit III to repeat unit II is about 1:10 to about 10:1;each R′ is independently selected from the group consisting of —H, —OCH3, and —CH3, andeach R2 is independently selected from the group consisting of —H, —OCH3, and —CH3;the amine crosslinker is selected from the group consisting of a polyalkyleneimine, a polyetheramine, a polyalkylenepolyamine, an aliphatic amine, a polyfunctional aliphatic amine, an arylalkylamine, a heteroarylalkylamine, a chitosan, and combinations thereof; andthe salt is selected from NaCl, NaBr, KCl, KBr, CaCl2, MgCl2, NaNO3, KNO3, NaC2H3O2, KC2H3O2, NaCHO2, KCHO2, and combinations thereof. 16. The composition of claim 1, wherein: the at least one hydrolyzed repeat unit comprises repeat unit IV;the ratio of repeat unit IV to repeat unit II is about 1:10 to about 10:1;each R1 is independently selected from the group consisting of —H, —OCH3, and —CH3, andeach R2 is independently selected from the group consisting of —H, —OCH3, and —CH3;the amine crosslinker is selected from the group consisting of a polyalkyleneimine, a polyetheramine, a polyalkylenepolyamine, an aliphatic amine, a polyfunctional aliphatic amine, an arylalkylamine, a heteroarylalkylamine, a chitosan, and combinations thereof; andthe salt is selected from NaCl, NaBr, KCl, KBr, CaCl2, MgCl2, NaNO3, KNO3, NaC2H3O2, KC2H3O2, NaCHO2, KCHO2, and combinations thereof. 17. The composition of claim 1, wherein: the at least one hydrolyzed repeat unit comprises at least two hydrolyzed repeat units, and the at least two hydrolyzed repeat units comprise repeat unit III and repeat unit IV;the ratio of repeat unit III to repeat unit II is about 1:10 to about 10:1, and the ratio of repeat unit IV to repeat unit II is about 1:10 to about 10:1;each R1 is independently selected from the group consisting of —H, —OCH3, and —CH3, andeach R2 is independently selected from the group consisting of —H, —OCH3, and —CH3;the amine crosslinker is selected from the group consisting of a polyalkyleneimine, a polyetheramine, a polyalkylenepolyamine, an aliphatic amine, a polyfunctional aliphatic amine, an arylalkylamine, a heteroarylalkylamine, a chitosan, and combinations thereof; andthe salt is selected from NaCl, NaBr, KCl, KBr, CaCl2, MgCl2, NaNO3, KNO3, NaC2H3O2, KC2H3O2, NaCHO2, KCHO2, and combinations thereof.
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