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US 2009/0023618 A1Published application
Method for recovering crude oil from a subterranean formation
AssigneeRhodia Inc.
InventorsTobias Johannes FUTTERER, Lawrence Alan HOUGH, Robert Lee REIERSON
Life of this patent
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Abstract
An aqueous fluid useful for the recovery of crude oil from a subterranean formation, including water and one or more organophosphorus materials and methods for using same.
Claims28
An aqueous fluid composition useful for the recovery of crude oil from a subterranean formation, comprising:
- (a) brine and
- (b) one or more organophosphorus materials selected from:
- (b)(1) organophosphorus compounds according to structure (I):
- wherein:
- each R1 is and each R2 is independently absent or O, provided that at least one of R1 and R2 is O,
- each R3 is independently alkyleneoxy, poly(alkyleneoxy), which may optionally, be substituted on one or more carbon atom of such alkyleneoxy, or poly(alkyleneoxy) group by hydroxyl, alkyl, hydroxyalkyl, alkoxy, alkenyl, aryl, or aryloxy,
- R5 is and each R4 is independently absent or alkyleneoxy, poly(alkyleneoxy), which may optionally, be substituted on one or more carbon atom of such alkyleneoxy, or poly(alkyleneoxy) group by hydroxyl, alkyl, hydroxyalkyl, alkoxy, alkenyl, aryl, or aryloxy,
- R6 and R8 are each and each R7 is independently H, or (C1-C30)hydrocarbon, which hydrocarbon may optionally be substituted on one or more carbon atoms by hydroxyl, fluorine, alkyl, alkenyl or aryl and/or interrupted at one or more sites by an O, N, or S heteroatom, or —POR9R10,
- R9 and R10 are each independently hydroxyl, alkoxy, aryloxy, or (C1-C30)hydrocarbon, which hydrocarbon may optionally be substituted on one or more carbon atoms by hydroxyl, fluorine, alkyl, alkenyl or aryl and/or interrupted at one or more sites by an O, N, or S heteroatom, and
- m is an integer of from 1 to 5,
- (b)(2) salts of organophosphorus compounds according to structure (I),
- (b)(3) condensation reaction products of two or more molecules of one or more organophosphorus compounds according to structure (I), and
- (b)(4) mixtures comprising two or more of the compounds, salts, and/or reaction products of (b)(1), (b)(2), and (b)(3).
10 more elements
A method for recovering crude oil from a subterranean formation, comprising introducing to the formation an aqueous fluid comprising
- (a) water or brine and
- (b) an organophosphorus material selected from:
- (b)(I)(1) organophosphorus compounds according to structure (I):
- wherein:
- each R1 is and each R2 is independently absent or O, provided that at least one of R1 and R2 is O,
- each R3 is independently alkyleneoxy, poly(alkyleneoxy), which may optionally, be substituted on one or more carbon atom of such alkyleneoxy, or poly(alkyleneoxy) group by hydroxyl, alkyl, hydroxyalkyl, alkoxy, alkenyl, aryl, or aryloxy,
- R5 is and each R4 is independently absent or alkyleneoxy, poly(alkyleneoxy), which may optionally, be substituted on one or more carbon atom of such alkyleneoxy, or poly(alkyleneoxy) group by hydroxyl, alkyl, hydroxyalkyl, alkoxy, alkenyl, aryl, or aryloxy,
- R6 and R8 are each and each R7 is independently H, or (C1-C30)hydrocarbon, which hydrocarbon may optionally be substituted on one or more carbon atoms by hydroxyl, fluorine, alkyl, alkenyl or aryl and/or interrupted at one or more sites by an O, N, or S heteroatom, or —POR9R10,
- R9 and R10 are each independently hydroxyl, alkoxy, aryloxy, or (C1-C30)hydrocarbon, which hydrocarbon may optionally be substituted on one or more carbon atoms by hydroxyl, fluorine, alkyl, alkenyl or aryl and/or interrupted at one or more sites by an O, N, or S heteroatom, and
- m is an integer of from 1 to 5,
- (b)(I)(2) salts of organophosphorus compounds according to structure (I),
- (b)(I)(3) condensation reaction products of two or more molecules of one or more organophosphorus compounds according to structure (I), and
- (b)(I)(4) mixtures comprising two or more of the compounds, salts, and/or reaction products of (b)(I)(1), (b)(I)(2), and (b)(I)(3).
10 more elements
Dependencies are inferred from the claim text.