摘要:
The present invention is directed to alkylxylene sulfonate for enhanced oil recovery processes. The alkylxylene moiety in the alkylxylene sulfonate contains a high percentage of the 4-alkyl-1,2-dimethyl benzene isomer and a high percentage of alkyl group attachment to the xylene ring at positions higher than the 2-position on the alkyl carbon chain. The present invention is also directed to a method for enhancing the recovery of oil from a subterranean reservoir which method employs the alkylxylene sulfonate of the present invention. The alkylxylene sulfonate is employed in an aqueous media. The method optionally employs co-surfactants. It has surprisingly been discovered that the high percentage of the 4-alkyl-1,2-dimethyl benzene isomer and the high percentage alkyl group attachment to the xylene moiety at positions higher than the 2-position along the alkyl carbon chain on the alkylxylene sulfonate of the present invention provides an enhanced oil recovery (EOR) surfactant having low Interfacial Tension (IFT).
摘要:
A process for alkylating an aromatic compound comprising reacting at least one aromatic compound with a mixture of olefins having from about 8 to about 100 carbon atoms, in the presence of a strong acid catalyst wherein the resulting product comprises at least about 60 weight percent of a 1,2,4 tri-alkylsubstituted aromatic compound.
摘要:
A process for preparing a synthetic petroleum sulfonate comprising (a) reacting a first amount of at least one aromatic compound with a first amount of a mixture of olefins having from about 8 to about 100 carbon atoms, in the presence of a strong acid catalyst, wherein the resulting product comprises at least about 60 weight percent of a 1,2,4-trialkylsubstituted aromatic compound; (b) sulfonating the product of (a); and (c) neutralizing the product of (b) with an alkali or alkaline earth metal hydroxide or ammonia.
摘要:
Disclosed is a method for improving filtration in the preparation of an alkaline earth metal alkyltoluene sulfonate concentrate by selectively controlling the meta, ortho, para isomer distribution of the alkyl group of the alkyltoluene produced by the process comprising alkylating toluene with at least one isomerized normal alpha olefin, having from about 18 to about 30 carbon atoms and having from 20% to 100% branching in an alkylation process which includes monitoring % isomer formation and adjusting an alkylation process parameter in order to provide a target specified isomer content of less than 38% meta-isomer content; and thereafter sulfonating and neutralizing to produce a low base number sulfonated alkyltoluene concentrate having a Base Number of about 2 to 60 (ASTM D 2896).
摘要翻译:公开了一种通过选择性地控制烷基甲苯的烷基的间位,邻位,对位异构体分布来制备碱土金属烷基甲苯磺酸盐浓缩物的方法,该方法包括使甲苯与至少一种异构化的正常α 烯烃,其具有约18至约30个碳原子并且在烷基化方法中具有20%至100%的支化,其包括监测%异构体形成和调节烷基化方法参数,以提供小于38%的目标特异异构体含量, 间 - 异构体含量; 然后磺化和中和以产生碱值为约2至60(ASTM D 2896)的低碱值磺化烷基甲苯浓缩物。
摘要:
A process for alkylating an aromatic compound comprising reacting at least one aromatic compound with a mixture of olefins having from about 8 to about 100 carbon atoms, in the presence of a strong acid catalyst wherein the resulting product comprises at least about 60 weight percent of a 1, 2, 4 tri-alkylsubstituted aromatic compound.
摘要:
The present invention is directed to a method for enhancing the recovery of oil from a subterranean reservoir which method employs an alkylxylene sulfonate that contains a high percentage of the 4-alkyl-1,2-dimethyl benzene isomer and a high percentage of alkyl group attachment to the xylene ring at positions higher than the 2-position on the alkyl carbon chain in an aqueous media, since it has surprisingly been discovered that the high percentage of the 4-alkyl-1,2-dimethyl benzene isomer and the high percentage alkyl group attachment to the xylene moiety at positions higher than the 2-position along the alkyl carbon chain on the alkylxylene sulfonate provides an enhanced oil recovery surfactant having low Interfacial Tension. The method optionally employs co-surfactants.
摘要:
The present invention is directed to an under-neutralized alkylxylene sulfonic acid composition for enhanced oil recovery processes. The present invention is also directed to a method for enhancing the recovery of oil from a subterranean reservoir which method employs the under-neutralized alkylxylene sulfonic acid compositions of the present invention. The under-neutralized alkylxylene sulfonic acid compositions are employed in an aqueous media. The method optionally employs suitable co-surfactants, such as alcohols, alcohol ethers, polyalkylene glycols, poly(oxyalkylene)glycols and/or poly(oxyalkylene)glycol ethers.
摘要:
A carboxylate detergent prepared by the process comprising (a) alkylating a hydroxyaromatic compound with at least one normal alpha olefin having from about 12 to about 30 carbon atoms per molecule that has been isomerized to obtain an isomerized alpha olefin having 15-98 wt % branching and a residual alpha olefin content of between from about 0.1 to about 30 wt %, thereby producing an alkylated hydroxyaromatic compound; (b) neutralizing the resulting alkylated hydroxyaromatic compound with an alkali metal base; (c) carbonating the alkali metal salt from step (b) with carbon dioxide; (d) acidifying the salt produced in step (c); and (e) overbasing the resulting alkylated hydroxyaromatic carboxylic acid.
摘要:
Disclosed is a method for improving filtration in the preparation of an alkaline earth metal alkyltoluene sulfonate concentrate by selectively controlling the meta, ortho, para isomer distribution of the alkyl group of the alkyltoluene produced by the process comprising alkylating toluene with at least one isomerized normal alpha olefin, having from about 18 to about 30 carbon atoms and having from 20% to 100% branching in an alkylation process which includes monitoring % isomer formation and adjusting an alkylation process parameter in order to provide a target specified isomer content of less than 38% meta-isomer content; and thereafter sulfonating and neutralizing to produce a low base number sulfonated alkyltoluene concentrate having a Base Number of about 2 to 60 (ASTM D 2896).
摘要翻译:公开了一种通过选择性地控制烷基甲苯的烷基的间位,邻位,对位异构体分布来制备碱土金属烷基甲苯磺酸盐浓缩物的方法,该方法包括使甲苯与至少一种异构化的正常α 烯烃,其具有约18至约30个碳原子并且在烷基化方法中具有20%至100%的支化,其包括监测%异构体形成和调节烷基化方法参数,以提供小于38%的目标特异异构体含量, 间 - 异构体含量; 然后磺化和中和以产生碱值为约2至60(ASTM D 2896)的低碱值磺化烷基甲苯浓缩物。
摘要:
A carboxylate detergent prepared by the process comprising (a) alkylating a hydroxyaromatic compound with at least one normal alpha olefin having from about 12 to about 30 carbon atoms per molecule that has been isomerized to obtain an isomerized alpha olefin having 15-98 wt % branching and a residual alpha olefin content of between from about 0.1 to about 30 wt %, thereby producing an alkylated hydroxyaromatic compound; (b) neutralizing the resulting alkylated hydroxyaromatic compound with an alkali metal base; (c) carbonating the alkali metal salt from step (b) with carbon dioxide; (d) acidifying the salt produced in step (c); and (e) overbasing the resulting alkylated hydroxyaromatic carboxylic acid.