COMPOSITION AND METHOD FOR OILFIELD WATER CLARIFICATION PROCESSES

Disclosed are aqueous water clarifier compositions used to demulsify and clarify oil-water dispersions and emulsions derived from petroleum industry operations. The disclosed aqueous water clarifier composition comprises an anionic polymer, a chelating agent, optionally a base, and optionally an alcohol. Specifically the anionic polymer is a latex dispersion of an anionic polymers comprise an anionic polymer comprising: A) 2 to 80 percent by weight of at least one C-Cα,β-ethylenically unsaturated carboxylic acid monomer; B) 15 to 80 percent by weight of at least one nonionic, copolymerizable α,β-ethylenically unsaturated monomer; C) 0 to 50 percent by weight of one or more of the following monomers: C1) at least one nonionic vinyl surfactant ester; or C2) at least one nonionic, copolymerizable α,β-ethylenically unsaturated monomer having longer polymer chains than monomer B), or C3) at least one nonionic urethane monomer; and, optionally, D) 0 to 5 percent by weight of at least one crosslinker. Said aqueous water clarifier compositions demonstrate good pumpability with reduced tendency to foul pumps. 1. An aqueous water clarifier composition comprising: [{'sub': 3', '8, 'A) at least one C-Cα,β-ethylenically unsaturated carboxylic acid monomer;'}, 'B) at least one nonionic, copolymerizable α,β-ethylenically unsaturated monomer;', 1) at least one nonionic vinyl surfactant ester,', '2) at least one nonionic, copolymerizable α,β-ethylenically unsaturated monomer having longer polymer chains than monomer B), and', '3) at least one nonionic urethane monomer;, 'C) optionally, one or more of the following, 'and', 'D) optionally, at least one crosslinker;, 'i) a latex dispersion of an anionic polymer wherein the anionic polymer comprisesii) a chelating agent;iii) optionally a base,and(iv) optionally an alcohol.3. The composition of further comprising:iv) an alcohol in the amount of from 5 to 70 weight percent based on the total weight of the aqueous water clarifier ...

Stabilized aqueous water clarifier composition and methods of use

Oil-water dispersions and emulsions derived from petroleum industry operations are demulsified and clarified using an aqueous water clarifier composition. Formation of such oil-water dispersion and emulsions is inhibited and mitigated using the aqueous water clarifier composition comprising a latex dispersion of an anionic polymer, an alcohol, and a base. The latex dispersion of an anionic polymers comprise an anionic polymer comprising: A) 2-80% by weight of at least one C 3 -C 8 α,β-ethylenically unsaturated carboxylic acid monomer; B) 15-80% by weight of at least one nonionic, copolymerizable α,β-ethylenically unsaturated monomer; C) 0-50% by weight of one or more of the following monomers: C1) at least one nonionic vinyl surfactant ester; or C2) at least one nonionic, copolymerizable α,β-ethylenically unsaturated monomer having longer polymer chains than monomer B), or C3) at least one nonionic urethane monomer; and, optionally, D) 0-5% by weight of at least one crosslinker.

N-vinylpyrrolidone-based cationic copolymer for separating an oil-in-water emulsion

Embodiments of the present disclosure include a method of separating an oil-in-water emulsion formed during crude oil production into a water phase and an oil phase that includes adding 1 part-per-million (ppm) to 10000 ppm of an N-vinylpyrrolidone based cationic copolymer to the oil-in-water emulsion, based on the total volume of the oil-in-water emulsion, to form a water phase and an oil phase, and separating the water phase from the oil phase.

Amphiphilic block copolymer-toughened epoxy resins and ambient cure high-solids coatings made therefrom

The invention relates to amphiphilic block copolymer-toughened epoxy resins and ambient cure high-solids Coatings made therefrom. A curable ambient cure high-solids coating composition including: (a) an epoxy resin; (b) an amphiphilic block copolymer containing at least one epoxy resin miscible block segment and at least one epoxy resin immiscible block segment; wherein the immiscible block segment comprises at least one polyether structure provided that the polyether structure of said immiscible block segment contains at least one or more alkylene oxide monomer units; such that when the epoxy resin composition is cured, the toughness of the resulting cured epoxy resin composition is increased; and (c) a sufficient amount of a nitrogen-containing curing agent to cure the coating composition at ambient temperature of less than 60 DEG C. The amphiphilic block copolymer is preferably an all polyether block copolymer such as a PEO-PBO diblock copolymer or a PEO-PBO-PEO triblock copolymer.

COMPOSITION AND METHOD FOR OILFIELD WATER CLARIFICATION PROCESSES

Disclosed are aqueous water clarifier compositions used to demulsify and clarify oil-water dispersions and emulsions derived from petroleum industry operations. The disclosed aqueous water clarifier composition comprises an anionic polymer, a chelating agent, optionally a base, and optionally an alcohol. Specifically the anionic polymer is a latex dispersion of an anionic polymers comprise an anionic polymer comprising: A) 2 to 80 percent by weight of at least one C-Cα,β-ethylenically unsaturated carboxylic acid monomer; B) 15 to 80 percent by weight of at least one nonionic, copolymerizable α,β-ethylenically unsaturated monomer; C) 0 to 50 percent by weight of one or more of the following monomers: C1) at least one nonionic vinyl surfactant ester; or C2) at least one nonionic, copolymerizable α,β-ethylenically unsaturated monomer having longer polymer chains than monomer B), or C3) at least one nonionic urethane monomer; and, optionally, D) 0 to 5 percent by weight of at least one crosslinker. Said aqueous water clarifier compositions demonstrate good pumpability with reduced tendency to foul pumps. 112-. (canceled)14. The composition of claim 13 , wherein the chelating agent is sodium salt of ethylenediamine tetraacetic and the base is sodium hydroxide.15. The composition of claim 13 , wherein the latex dispersion includes from 28 to 30 percent active latex.16. The composition of claim 13 , wherein the aqueous water clarifier composition reduces pump fouling.17. A method for demulsifying and clarifying oil-in-water emulsions derived from petroleum production and refining operations claim 13 , the method comprising adding to the oil-in-water emulsions the aqueous water clarifier composition as claimed in .18. A method of for inhibiting and mitigating the formation of oil-water emulsions generated during petroleum industry operations from oil and aqueous precursors which become mixed during said operations claim 13 , said method comprising providing to the oil ...

METHOD FOR RECOVERING HYDROCARBON FLUIDS FROM A SUBTERRANEAN RESERVOIR

Disclosed is a composition and use thereof for the recovery of hydrocarbon fluids from a subterranean reservoir. More particularly, this invention concerns α-glycol containing sulfonated epoxy resin composition and method for preparing said composition. The α-glycol containing sulfonated epoxy resin composition is made by forming a reaction product comprising an epoxide-containing compound, a primary amino sulfonate, and optionally one or more of a primary monoamine alkylene oxide oligomer, followed by converting any unreacted epoxide groups in the reaction product to α-glycol groups by hydrolysis. Said α-glycol containing sulfonated epoxy resin compositions demonstrate good solubility in aqueous solutions and are useful for modifying the permeability of subterranean formations and increasing the mobilization and/or recovery rate of hydrocarbon fluids present in the formations. 1. A method of modifying the permeability to water of a subterranean formation comprising the step of injecting into the subterranean formation an aqueous composition comprising from about 0.005 percent to about 2 percent , by weight , of an α-glycol containing sulfonated epoxy resin composition wherein the α-glycol containing sulfonated epoxy resin composition is made by: (i) an epoxide-containing compound having an average of more than one epoxide group per molecule,', '(ii) a primary amino sulfonate,', '(iii) optionally a primary monoamine alkylene oxide oligomer, and', '(iv) optionally an epoxide reactive compound selected from a primary monoamine, a secondary diamine, a monohydroxyalkyl primary monoamine, a dihydroxyalkyl primary monoamine, a trihydroxyalkyl primary monoamine, a monohydroxycycloalkyl primary monoamine, a dihydroxycycloalkyl primary monoamine, or a trihydroxycycloalkyl primary monoamine and, '(A) forming a sulfonated epoxy resin polymer reaction product by reacting'}(B) converting unreacted epoxy groups in the reaction product from step (A) to α-glycol groups by ...

Cationic vinyl imidazolium-based copolymer for separating an oil-in-water emulsion

Embodiments of the present disclosure include a method of separating an oil-in-water emulsion formed during crude oil production into a water phase and an oil phase that includes adding 1 part-per-million (ppm) to 10000 ppm of a cationic vinyl imidazolium-based copolymer to the oil-in-water emulsion, based on the total volume of the oil-in-water emulsion, to form a water phase and an oil phase, and separating the water phase from the oil phase.

N-VINYLPYRROLIDONE-BASED CATIONIC COPOLYMER FOR SEPARATING AN OIL-IN-WATER EMULSION

Embodiments of the present disclosure include a method of separating an oil-in-water emulsion formed during crude oil production into a water phase and an oil phase that includes adding 1 part-per-million (ppm) to 10000 ppm of an N-vinylpyrrolidone based cationic copolymer to the oil-in-water emulsion, based on the total volume of the oil-in-water emulsion, to form a water phase and an oil phase, and separating the water phase from the oil phase. 1. A method of separating an oil-in-water emulsion formed during crude oil production into a water phase and an oil phase , comprising:adding 1 part-per-million (ppm) to 10000 ppm of an N-vinylpyrrolidone-based cationic copolymer formed with monomers of N-vinyl-2-pyrrolidone and a quaternized dimethylaminoethyl methacrylate to the oil-in-water emulsion, based on a total volume of the oil-in-water emulsion, to form the water phase and the oil phase; andseparating the water phase from the oil phase.2. (canceled)3. The method of claim 1 , where the quaternized dimethylaminoethyl methacrylate is 2-ethyldimethylaminoethyl methacrylate ethyl sulfate.4. The method of claim 1 , where the N-vinylpyrrolidone-based cationic copolymer is poly[N-vinyl-2-pyrrolidone-co-quaternized dimethylaminoethyl methacrylate].5. The method of claim 4 , where the quaternized dimethylaminoethyl methacrylate is 2-ethyldimethylaminoethyl methacrylate ethyl sulfate.6. The method of claim 1 , where the N-vinylpyrrolidone-based cationic copolymer is formed as a reaction product of about 67 weight percent (wt. %) of N-vinyl-2-pyrrolidone and about 33 wt. % of a quaternized dimethylaminoethyl methacrylate.7. The method of claim 6 , where the quaternized dimethylaminoethyl methacrylate is 2-ethyldimethylaminoethyl methacrylate ethyl sulfate.8. The method of claim 1 , where the N-vinylpyrrolidone-based cationic copolymer has a weight average molecular weight of about 1000000 g/mol. The present disclosure relates to a method of separating an oil-in-water ...

STABILIZED AQUEOUS WATER CLARIFIER COMPOSITION AND METHODS OF USE

Oil-water dispersions and emulsions derived from petroleum industry operations are demulsified and clarified using an aqueous water clarifier composition. Formation of such oil-water dispersion and emulsions is inhibited and mitigated using the aqueous water clarifier composition comprising a latex dispersion of an anionic polymer, an alcohol, and a base. The latex dispersion of an anionic polymers comprise an anionic polymer comprising: A) 2-80% by weight of at least one C-Cα,β-ethylenically N unsaturated carboxylic acid monomer; B) 15-80% by weight of at least one nonionic, copolymerizable α,β-ethylenically unsaturated monomer; C) 0-50% by weight of one or more of the following monomers: C1) at least one nonionic vinyl surfactant ester; or C2) at least one nonionic, copolymerizable α,β-ethylenically unsaturated monomer having longer polymer chains than monomer B), or C3) at least one nonionic urethane monomer; and, optionally, D) 0-5% by weight of at least one crosslinker. 3. The composition of claim 1 , wherein the carboxylic acid monomer A) is methacrylic acid claim 1 , acrylic acid or a mixture thereof and the unsaturated monomer B) is a monovinyl ester.4. The composition of wherein the diol is propylene glycol or ethylene glycol.7. The method according to claim 5 , wherein the oil-water dispersion or emulsion is an oil in water dispersion or emulsion.8. The method according to claim 5 , wherein the oil-water dispersion or emulsion is a water in oil dispersion or emulsion.9. The method according to claim 5 , wherein the aqueous water clarifier composition is provided to the aqueous precursor.10. The method according to claim 5 , wherein the demulsifying effective amount of the aqueous water clarifier composition is 1 to 10 claim 5 ,000 ppm. The present invention relates to a freeze protected aqueous water clarifier composition and method for demulsifying and clarifying oil-water emulsions and dispersions derived from petroleum production and refining operations ...

COMPOSITION FOR RECOVERING HYDROCARBON FLUIDS FROM A SUBTERRANEAN RESERVOIR

Disclosed is a composition and use thereof for the recovery of hydrocarbon fluids from a subterranean reservoir. More particularly, this invention concerns sulfonated epoxy resin polymers comprising an epoxide-containing compound, a primary amino sulfonate, and optionally one or more of a primary monoamine alkylene oxide oligomer, that modify the permeability of subterranean formations and increase the mobilization and/or recovery rate of hydrocarbon fluids present in the formations. 1. A composition comprising a the reaction products of:(i) epoxide-containing compound having an average of more than one epoxide group per molecule,(ii) a primary amino sulfonate,(iii) optionally a primary monoamine alkylene oxide oligomer,and(iv) optionally a primary monoamine, a secondary diamine, a monohydroxyalkyl primary monoamine, a dihydroxyalkyl primary monoamine, a trihydroxyalkyl primary monoamine, a mono hydroxycycloalkyl primary monoamine, a dihydroxycycloalkyl primary monoamine, or a trihydroxycycloalkyl primary monoamine3. The composition of wherein the molar ratio of the epoxide-containing compound (i) to the primary amino sulfonate (ii) is 5:1 to 1:5.4. The reaction product of having an average molecular weight of from 300 to 100 claim 1 ,000.5. The composition of wherein the primary monoamine alkylene oxide oligomer is present in an amount of from 1 to 15 percent claim 1 , of the the amine hydrogen equivalents for reaction with the epoxide equivalents of component (i) claim 1 , the epoxide-containing compound.6. The composition of wherein the epoxide-containing compound is selected from diglycidyl ether of 4 claim 1 ,4′-isopropylidenediphenol (bisphenol A); cis-1 claim 1 ,3-cyclohexanedimethanol; trans-1 claim 1 ,3-cyclohexanedimethanol; cis-1 claim 1 ,4-cyclohexanedimethanol;or trans-1,4-cyclohexanedimethanol.7. The composition of wherein the primary amino sulfonate is selected from sulfanilic acid claim 1 , sodium salt; sulfanilic acid claim 1 , potassium salt; ...

WATER SOLUBLE ALPHA-GLYCOL SULFONATED EPOXY RESIN COMPOSITION AND PROCESS FOR PREPARING THE SAME

Disclosed is an α-glycol containing sulfonated epoxy resin composition and method for preparing said composition. The α-glycol containing sulfonated epoxy resin composition is made by forming a reaction product comprising an epoxide-containing compound, a primary amino sulfonate, and optionally one or more of a primary monoamine alkylene oxide oligomer, followed by converting any unreacted epoxide groups in the reaction product to α-glycol groups by hydrolysis. Said α-glycol containing sulfonated epoxy resin compositions demonstrate good solubility in aqueous solutions and are useful for modifying the permeability of subterranean formations and increasing the mobilization and/or recovery rate of hydrocarbon fluids present in the formations. 1. A method to make an α-glycol containing sulfonated epoxy resin composition comprising the steps of: (i) an epoxide-containing compound having an average of more than one epoxide group per molecule,', '(ii) a primary amino sulfonate,', '(iii) optionally a primary monoamine alkylene oxide oligomer,', 'and', '(iv) optionally an epoxide reactive compound selected from a primary monoamine, a secondary diamine, a monohydroxyalkyl primary monoamine, a dihydroxyalkyl primary monoamine, a trihydroxyalkyl primary monoamine, a monohydroxycycloalkyl primary monoamine, a dihydroxycycloalkyl primary monoamine, or a trihydroxycycloalkyl primary monoamine, '(A) forming a sulfonated epoxy resin polymer reaction product by reacting'}and(B) converting unreacted epoxy groups in the reaction product from step (A) to α-glycol groups by hydrolysis.3. The method of wherein the equivalent ratio of epoxide reactive groups in the primary monoamine sulfonate (ii) claim 1 , the optional primary monoamine alkylene oxide oligomer (iii) claim 1 , and the optional epoxide reactive compound (iv) to epoxy groups in the epoxide-containing compound (i) is 0.25:1 to 0.95:1.4. The method of wherein the α-glycol containing sulfonated epoxy resin composition has an ...

METHOD FOR REDUCING THE PERMEABILITY OF A SUBTERRANEAN FORMATION TO AQUEOUS-BASED FLUIDS

Disclosed is a composition and use thereof for the recovery of hydrocarbon fluids from a subterranean reservoir. More particularly, this invention concerns sulfonated epoxy resin polymers comprising an epoxide-containing compound, a primary amino sulfonate, and optionally one or more of a primary monoamine alkylene oxide oligomer, that modify the permeability of subterranean formations and increase the mobilization and/or recovery rate of hydrocarbon fluids present in the formations.

COMPOSITION AND SYNTHESIS OF HIGH MOLECULAR WEIGHT AROMATIC POLYOL POLYESTERS

A polyester demulsifier and method of synthesizing said polyester demulsifier including the step of reacting a mixture of polyol and aromatic di-acid, the aromatic di-acid solubilized into said polyol without sublimation or degradation during the reaction process. 1. A method of synthesizing a polyester demulsifier , said method comprising the step of:reacting a mixture of a polyol and an aromatic di-acid;wherein said aromatic di-acid is solubilized into said polyol without sublimation or degradation during the reaction process.2. The method of claim 1 , wherein said polyol is polyalkylene glycol.3. The method of claim 2 , wherein the wt. % of EO of said polyalkylene glycol is between 5 wt. % to 100 wt. % of the functional groups claim 2 , and the corresponding wt. % of PO of said polyalkylene glycol is 95 wt. % to 0 wt. % of the functional groups.4. The method of claim 1 , wherein the said reacting a mixture of polyol and aromatic di-acid step further comprises reacting said mixture with a catalyst.5. The method of claim 4 , wherein said catalyst is selected from the group consisting of titanium acetylacetonates and butylstannoic acid.6. The method of claim 2 , wherein the molecular weight of polyalkylene glycol is from about 200 g/mol to 10 claim 2 ,000 g/mol.7. The method of claim 1 , wherein said aromatic di-acid is selected from the group consisting of phthalic acid claim 1 , isophthalic acid claim 1 , terephthalic acid claim 1 , diphenic acid claim 1 , and 2 claim 1 ,6-naphthalenedicarboxylic acid.8. The method of claim 2 , wherein said aromatic di-acid is isophthalic acid.9. The method of claim 7 , wherein said polyalkylene glycol is reacted with said isophthalic acid at the stoichiometric ratio of 2 moles of said polyalkylene glycol to 1 mole of said isophthalic acid.10. The method of claim 7 , wherein said polyalkylene glycol is reacted with said isophthalic acid at the stoichiometric ratio of 5 moles of said polyalkylene glycol to 1 mole of said ...

METHOD OF USING HIGH MOLECULAR WEIGHT AROMATIC POLYOL POLYESTERS AS DEMULSIFIERS FOR CRUDE OIL TREATMENT

A method of demulsifying crude oil, said method comprising the step of reacting an amount of crude oil with a polyester demulsifier, therein the demulsifier is used in quantities from 0.0001% to 5% (1-50,000 ppm), preferably 0.0005% to 2% (5-20,000 ppm), more preferably 0.0008% to 1% (8-10,000 ppm) and most preferably 0.001 to 0.1 wt. % polymer (10-1,000 ppm) related to the oil fraction of the utilized emulsion. 3. The method of claim 1 , wherein said demulsifier is added to the crude oil at a concentration of about 1-50 claim 1 ,000 ppm.4. The method of claim 2 , wherein said demulsifier is added to the crude oil at a concentration of about 5-20 claim 2 ,000 ppm.5. The method of claim 3 , wherein said demulsifier is added to the crude oil at a concentration of about 8-10 claim 3 ,000 ppm.6. The method of claim 4 , wherein said demulsifier is added to the crude at a concentration of about 10-1 claim 4 ,000 ppm.7. The method of claim 1 , wherein the molecular weight of the demulsifier is between about 200 g/mol to about 100 claim 1 ,000 g/mol. This invention relates generally to the use of demulsifiers for crude oil treatment. More specifically, this invention relates to a method of treatment for crude oil utilizing an aromatic polyol polyester demulsifier, the aromatic polyol polyester being synthesized by reacting high molecular weight, low hydroxyl number polyols with an acid source which is solubilized into the polyol without sublimation or degradation during the reaction process.Demulsifiers, or emulsion breakers, are a class of chemicals used to separate emulsions, such as water in oil. Demulsifiers are commonly used in the processing of crude oil, which is typically produced along with significant quantities of saline water. This water (and salt) must be removed from the crude oil prior to refining. If the majority of the water and salt are not removed, significant corrosion problems can occur in the refining process.In crude oil applications, demulsifiers are ...

Cationic vinyl imidazolium-based copolymer for separating an oil-in-water emulsion

Embodiments of the present disclosure include a method of separating an oil-in-water emulsion formed during crude oil production into a water phase and an oil phase that includes adding 1 part-per-million (ppm) to 10000 ppm of a cationic vinyl imidazolium-based copolymer to the oil-in-water emulsion, based on the total volume of the oil-in-water emulsion, to form a water phase and an oil phase, and separating the water phase from the oil phase.

Stabilized aqueous water clarifier composition and methods of use

Oil-water dispersions and emulsions derived from petroleum industry operations are demulsified and clarified using an aqueous water clarifier composition. Formation of such oil-water dispersion and emulsions is inhibited and mitigated using the aqueous water clarifier composition comprising a latex dispersion of an anionic polymer, an alcohol, and a base. The latex dispersion of an anionic polymers comprise an anionic polymer comprising: A) 2-80 % by weight of at least one C 3 -C 8 α,β-ethylenically unsaturated carboxylic acid monomer; B) 15-80 % by weight of at least one nonionic, copolymerizable α,β-ethylenically unsaturated monomer; C) 0-50 % by weight of one or more of the following monomers: C1) at least one nonionic vinyl surfactant ester; or C2) at least one nonionic, copolymerizable α,β-ethylenically unsaturated monomer having longer polymer chains than monomer B), or C3) at least one nonionic urethane monomer; and, optionally, D) 0-5 % by weight of at least one crosslinker.

COMPOSITION AND METHOD FOR PROCEDURES FOR CLARIFICATION OF WATER IN OIL FIELD

Se describen composiciones acuosas clarificadoras de agua utilizadas para desemulsificar y clarificar dispersiones y emulsiones de petróleo-agua derivadas de las operaciones de la industria del petróleo. La composición acuosa clarificadora de agua descrita comprende un polímero aniónico, un agente quelante, opcionalmente una base, y opcionalmente un alcohol. De manera específica el polímero aniónico es una dispersión de látex de un polímero aniónico que comprende un polímero aniónico que comprende: A) 2 a 80 por ciento en peso de por lo menos un monómero de ácido carboxílico a,b-insaturado etilénicamente C₃₋₈; B) 15 a 80 por ciento en peso de por lo menos un monómero a,b-insaturado etilénicamente, copolimerizable, no iónico; C) 0 a 50 por ciento en peso de uno o más de los siguientes monómeros: C1) por lo menos un éster de agente tensoactivo vinílico no iónico; o C2) por lo menos un monómero a,b-insaturado etilénicamente, copolimerizable, no iónico que tiene cadenas de polímero más largas que el monómero B), o C3) por lo menos un monómero de uretano no iónico; y, opcionalmente, D) 0 a 5 por ciento en peso de por lo menos un entrelazador. Dichas composiciones acuosas clarificadoras de agua demuestran buena capacidad de bombeo con una tendencia reducida a ensuciar las bombas. Aqueous water clarifying compositions used to demulsify and clarify oil-water dispersions and emulsions derived from petroleum industry operations are described. The water clarifying aqueous composition described comprises an anionic polymer, a chelating agent, optionally a base, and optionally an alcohol. Specifically, the anionic polymer is a latex dispersion of an anionic polymer comprising an anionic polymer comprising: A) 2 to 80 percent by weight of at least one C-ethylenically, b-unsaturated carboxylic acid monomer ; B) 15 to 80 percent by weight of at least one a, b-unsaturated ethylenically, copolymerizable, non-ionic monomer; C) 0 to 50 percent by weight of one or more of the following ...

Cationic vinyl imidazolium-based copolymer for separating an oil-in-water emulsion

Embodiments of the present disclosure include a method of separating an oil-in-water emulsion formed during crude oil production into a water phase and an oil phase that includes adding 1 part-per-million (ppm) to 10000 ppm of a cationic vinyl imidazolium-based copolymer to the oil-in-water emulsion, based on the total volume of the oil-in-water emulsion, to form a water phase and an oil phase, and separating the water phase from the oil phase.

Epoxy resing and process for making the same

EPOXIDIC RESINS STRENGTHENED WITH COPOLIMEROS OF AMPHIFILIC BLOCKS AND COATINGS WITH HIGH CONTENT IN SOLID CURED TO ENVIRONMENTAL TEMPERATURE OBTAINED FROM THEM.

Una composición curable para revestimientos con alto contenido en sólidos de endurecimiento en frío que comprende: (a) una resina epoxi; (b) un copolímero de bloques anfifílico que contiene al menos un segmento de bloques miscible con la resina epoxi y al menos un segmento de bloques inmiscible con la resina epoxi; en el que el segmento de bloques inmiscible comprende al menos una estructura de poliéter; tal que cuando la composición de la resina epoxi se cura, aumenta la tenacidad de la composición de la resina epoxi curada resultante; y (c) una cantidad suficiente de un agente de curado que contiene nitrógeno para curar la composición del revestimiento a una temperatura ambiente menor que 60ºC. A curable composition for coatings with a high content of cold hardening solids comprising: (a) an epoxy resin; (b) an amphiphilic block copolymer containing at least one block segment miscible with the epoxy resin and at least one block segment immiscible with the epoxy resin; wherein the immiscible block segment comprises at least one polyether structure; such that when the composition of the epoxy resin is cured, the toughness of the resulting cured epoxy resin composition increases; and (c) a sufficient amount of a nitrogen-containing curing agent to cure the coating composition at an ambient temperature of less than 60 ° C.

Method of using high molecular weight aromatic polyol diesters as demulsifiers for crude oil treatment

A method of demulsifying crude oil, said method comprising the step of reacting an amount of crude oil with a polyester demulsifier, therein the demulsifier is used in quantities from 0.0001% to 5% (1 - 50,000 ppm), preferably 0.0005% to 2% (5 - 20,000 ppm), more preferably 0.0008% to 1% (8 - 10,000 ppm) and most preferably 0.001 to 0.1 wt. % polymer (10 - 1,000 ppm) related to the oil fraction of the utilized emulsion.

Stabilized aqueous water clarifier composition and methods of use

Oil-water dispersions and emulsions derived from petroleum industry operations are demulsified and clarified using an aqueous water clarifier composition. Formation of such oil-water dispersion and emulsions is inhibited and mitigated using the aqueous water clarifier composition comprising a latex dispersion of an anionic polymer, an alcohol, and a base. The latex dispersion of an anionic polymers comprise an anionic polymer comprising: A) 2-80 % by weight of at least one C3-C8 a,ß-ethylenically unsaturated carboxylic acid monomer; B) 15-80 % by weight of at least one nonionic, copolymerizable a,ß-ethylenically unsaturated monomer; C) 0-50 % by weight of one or more of the following monomers: C1) at least one nonionic vinyl surfactant ester; or C2) at least one nonionic, copolymerizable a,ß-ethylenically unsaturated monomer having longer polymer chains than monomer B), or C3) at least one nonionic urethane monomer; and, optionally, D) 0-5 % by weight of at least one crosslinker.

Method for recovering hydrocarbon fluids from a subterranean reservoir using alpha-glycol containing sulfonated epoxy resin compound

Disclosed is a composition and use thereof for the recovery of hydrocarbon fluids from a subterranean reservoir. More particularly, this invention concerns α-glycol containing sulfonated epoxy resin composition and method for preparing said composition. The α-glycol containing sulfonated epoxy resin composition is made by forming a reaction product comprising an epoxide-containing compound, a primary amino sulfonate, and optionally one or more of a primary monoamine alkylene oxide oligomer, followed by converting any unreacted epoxide groups in the reaction product to α-glycol groups by hydrolysis. Said α-glycol containing sulfonated epoxy resin compositions demonstrate good solubility in aqueous solutions and are useful for modifying the permeability of subterranean formations and increasing the mobilization and/or recovery rate of hydrocarbon fluids present in the formations.

composition and synthesis of high molecular weight aromatic polyester polyesters

Trata-se de um desmulsificador de poliéster e método para sintetizar o dito desmulsificador de poliéster, incluindo a etapa de reagir uma mistura de poliol e di-ácido aromático, o di-ácido aromático solubilizado no dito poliol sem sublimação ou degradação durante o processo de reação. It is a polyester demulsifier and method for synthesizing said polyester demulsifier, including the step of reacting a mixture of polyol and aromatic di-acid, the aromatic di-acid solubilized in said polyol without sublimation or degradation during the process of reaction.

Method for separating an oil-in-water emulsion with n-vinylpyrrolidone-based cationic copolymer

Composition for recovering hydrocarbon fluids from a subterranean reservoir

Disclosed is a composition and use thereof for the recovery of hydrocarbon fluids from a subterranean reservoir. More particularly, this invention concerns sulfonated epoxy resin polymers comprising an epoxide-containing compound, a primary amino sulfonate, and optionally one or more of a primary monoamine alkylene oxide oligomer, that modify the permeability of subterranean formations and increase the mobilization and/or recovery rate of hydrocarbon fluids present in the formations.

Method for modifying the permeability to water of a subterranean formation

Disclosed is a composition and use thereof for the recovery of hydrocarbon fluids from a subterranean reservoir. More particularly, this invention concerns α-glycol containing sulfonated epoxy resin composition and method for preparing said composition. The α-glycol containing sulfonated epoxy resin composition is made by forming a reaction product comprising an epoxide-containing compound, a primary amino sulfonate, and optionally one or more of a primary monoamine alkylene oxide oligomer, followed by converting any unreacted epoxide groups in the reaction product toα-glycol groups by hydrolysis. Said α-glycol containing sulfonated epoxy resin compositions demonstrate good solubility in aqueous solutions and are useful for modifying the permeability of subterranean formations and increasing the mobilization and/or recovery rate of hydrocarbon fluids present in the formations.

Method for modifying the permeability to water of a subterranean formation

Disclosed is a composition and use thereof for the recovery of hydrocarbon fluids from a subterranean reservoir. More particularly, this invention concerns α-glycol containing sulfonated epoxy resin composition and method for preparing said composition. The α-glycol containing sulfonated epoxy resin composition is made by forming a reaction product comprising an epoxide-containing compound, a primary amino sulfonate, and optionally one or more of a primary monoamine alkylene oxide oligomer, followed by converting any unreacted epoxide groups in the reaction product toα-glycol groups by hydrolysis. Said α-glycol containing sulfonated epoxy resin compositions demonstrate good solubility in aqueous solutions and are useful for modifying the permeability of subterranean formations and increasing the mobilization and/or recovery rate of hydrocarbon fluids present in the formations.

Stabilized aqueous water clarifier composition and methods of use.

Dispersiones y emulsiones aceite-agua derivadas de las operaciones de la industria del petróleo son desemulsionadas y clarificadas usando una composición acuosa clarificadora de agua. La formación de tales dispersiones y emulsiones aceite-agua es inhibida y mitigada usando la composición acuosa clarificadora de agua, que comprende una dispersión de látex de un polímero aniónico, un alcohol y una base. La dispersión de látex de polímero aniónico comprende un polímero aniónico que comprende: (A) 2-80 % en peso de por lo menos un monómero de ácido carboxílico a,ß-etilénicamente insaturado de C3-C8; (B) 15-80 % en peso de por lo menos un monómero no iónico copolimerizable a,ß-etilénicamente insaturado; (C) 0-50% en peso de uno o más de los siguientes monómeros: (C1) por lo menos un tensoactivo no iónico de éster de vinilo; o (C2) por lo menos un monómero no iónico copolimerizable a,ß-etilénicamente insaturado que tiene cadenas de polímero más grandes que el monómero (B); o (C3) por lo menos un monómero no iónico de uretano; y opcionalmente (D) 0-5 % en peso de por lo menos un entrelazador.

Composición acuosa clarificadora de agua estabilizada a baja temperatura y métodos de uso

Las composiciones acuosas clarificadoras de agua de la presente son de utilidad para desemulsionar y clarificar dispersiones y emulsiones de petróleo en agua derivadas de operaciones de la industria del petróleo. Reivindicación 1: Una composición acuosa clarificadora de agua que comprende: i) un copolímero de óxido de alquileno-uretano hidrofóbicamente modificado; ii) un diol; iii) un glicol éter con la estructura de fórmula (1), en donde R y R¹ son, de modo independiente, H o un grupo alquilo lineal o ramificado C₁ a C₅ y R² es R³-(OCH₂CH₂)ₙ-, en donde R³ es un H o un grupo alquilo C₁ a C₃ lineal o ramificado y n es igual a 1 ó 2; iv) agua; y v) opcionalmente, un viscosificante, en donde la composición acuosa clarificadora de agua es estable entre -40ºC y 60ºC.

Cationic vinyl imidazolium-based copolymer for separating an oil-in-water emulsion

Embodiments of the present disclosure include a method of separating an oil-in-water emulsion formed during crude oil production into a water phase and an oil phase that includes adding 1 part-per-million (ppm) to 10000 ppm of a cationic vinyl imidazolium-based copolymer to the oil-in-water emulsion, based on the total volume of the oil-in-water emulsion, to form a water phase and an oil phase, and separating the water phase from the oil phase.