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    • 3. 发明申请
    • METHODS AND COMPOSITIONS FOR VISCOSIFYING HEAVY AQUEOUS BRINES
    • 用于粘稠重质水的方法和组合物
    • WO2010141099A2
    • 2010-12-09
    • PCT/US2010/001633
    • 2010-06-04
    • RHODIA OPERATIONSKESAVAN, SubramanianDAHANAYAKE, Manilal, S.WOODWARD, Gary
    • KESAVAN, SubramanianDAHANAYAKE, Manilal, S.WOODWARD, Gary
    • C09K8/68
    • C09K8/08C09K8/40C09K8/665C09K8/68C09K8/90
    • A method for viscosifying brine systems utilized in oilfield applications comprising: a) preparing a heavy brine system comprising obtaining an aqueous brine system comprising a hydrated polysaccharide and at least one multivalent salt, wherein the density of the aqueous brine system is greater than about 10 pounds per gallon (ppg), and adding an effective amount of an alkaline agent, thereby increasing the viscosity of the brine system. Also disclosed are methods for viscosifying brine systems utilized in well servicing applications comprising obtaining an aqueous brine solution comprising at least one multivalent salt, wherein the density of the aqueous brine system is greater than about 10 pounds per gallon (ppg); adding a polysaccharide; adding an effective amount of an acid buffering agent to the brine system to lower the pH of the brine system, whereby the polysaccharide is capable of substantially hydrating into the brine system; and adding an effective amount of an alkaline agent, thereby substantially increasing the viscosity of the brine system.
    • 一种用于在油田应用中使用的盐水系统的增稠方法,包括:a)制备重盐水系统,其包括获得包含水合多糖和至少一种多价盐的含水盐水系统,其中所述含水盐水系统的密度大于约10磅 每加仑(ppg),并加入有效量的碱性试剂,从而提高盐水系统的粘度。 还公开了用于在井服务应用中使用的用于增稠盐水系统的方法,包括获得包含至少一种多价盐的盐水水溶液,其中所述含水盐水系统的密度大于约10磅/加仑(ppg); 加入多糖; 向盐水系统中加入有效量的酸缓冲剂以降低盐水系统的pH,由此多糖能够基本上水合进盐水系统; 并添加有效量的碱性试剂,从而显着提高盐水系统的粘度。
    • 4. 发明申请
    • ENHANCED FOAM STABILITY APPLICATIONS AND METHODS
    • 增强泡沫稳定性应用与方法
    • WO2013184116A1
    • 2013-12-12
    • PCT/US2012/041335
    • 2012-06-07
    • RHODIA OPERATIONSMORVAN, MikelCHABERT, MaxDAHANAYAKE, Manilal, S.
    • MORVAN, MikelCHABERT, MaxDAHANAYAKE, Manilal, S.
    • C09K8/035E21B43/22
    • C09K8/594
    • A method for enhancing foam stability in foaming compositions for use in oilfield treatment application, including but not limited to use in mobility control for gas flooding. The method comprises the step of adding to a foaming composition a foam stabilizer of formula (I): wherein R 1 is an alkylamido group or a branched or linear alkyi group; R 2 and R 3 are individually hydrogen or a methyl group; R 4 , R 5 and R 6 are individually hydrogen or a hydroxy group, with the proviso that at least one of R 4 , R 5 or R 6 is a hydroxyl group; wherein the alkyl group has greater than about 10 carbon atoms. Also disclosed are methods to enhance foam stability in an aqueous foaming composition, comprising the step of adding a foam stabilizer selected from alkyl dimethyl betaine, alkyl amidopropyl hydroxy sulfobetaine or alkyl hydroxy sulfobetaine, wherein the alkyl group has greater than 10 carbon atoms, or 12 carbon atoms or 16 carbon atoms.
    • 用于油田处理应用的发泡组合物中泡沫稳定性提高的方法,包括但不限于用于气驱的移动控制。 该方法包括向发泡组合物中加入式(I)的泡沫稳定剂的步骤:其中R 1是烷基酰氨基或支链或直链烷基; R2和R3分别是氢或甲基; R4,R5和R6分别是氢或羟基,条件是R4,R5或R6中的至少一个是羟基; 其中烷基具有大于约10个碳原子。 还公开了提高水性发泡组合物中的泡沫稳定性的方法,其包括添加选自烷基二甲基甜菜碱,烷基酰氨基丙基羟基磺基甜菜碱或烷基羟基磺基甜菜碱(其中烷基具有大于10个碳原子)的泡沫稳定剂或12 碳原子或16个碳原子。
    • 6. 发明申请
    • ENHANCED FOAM STABILITY APPLICATIONS AND METHODS
    • 增强泡沫稳定性应用与方法
    • WO2012158489A2
    • 2012-11-22
    • PCT/US2012/037442
    • 2012-05-11
    • RHODIA OPERATIONSMORVAN, MikelCHABERT, MaxDAHANAYAKE, Manilal, S.
    • MORVAN, MikelCHABERT, MaxDAHANAYAKE, Manilal, S.
    • C09K8/584C09K8/588C09K8/594
    • A method for enhancing foam stability In foaming compositions for use in oilfield treatment application, including but not limited to use in mobility control for gas flooding. The method comprises the step of adding to a foaming composition a foam stabilizer of formula (I): wherein R 1 is an alkylamido group or a branched or linear alkyl group; R 2 and R 3 are individually hydrogen or a methyl group; R 4 , R 5 and R 6 are individually hydrogen or a hydroxy group, with the proviso that at least one of R 4 ,R 5 or R 6 is a hydroxyl group; wherein the alkyl group has greater than about 10 carbon atoms. Also disclosed are methods to enhance foam stability in an aqueous foaming composition, comprising the step of adding a foam stabilizer selected from alkyl dimethyl betaine,. alkyl amidopropyl hydroxy sulfobetaine or alkyl hydroxy sulfobetaine, wherein the alkyl group has greater than 10 carbon atoms, or 12 carbon atoms or 16 carbon atoms.
    • 一种提高泡沫稳定性的方法在用于油田处理应用的发泡组合物中,包括但不限于用于气驱的迁移率控制。 该方法包括向发泡组合物中加入式(I)的泡沫稳定剂的步骤:其中R 1是烷基酰氨基或支链或直链烷基; R2和R3分别是氢或甲基; R4,R5和R6分别是氢或羟基,条件是R4,R5或R6中的至少一个是羟基; 其中烷基具有大于约10个碳原子。 还公开了增加水性发泡组合物中的泡沫稳定性的方法,包括添加选自烷基二甲基甜菜碱的泡沫稳定剂的步骤。 烷基酰氨基丙基羟基磺基甜菜碱或烷基羟基磺基甜菜碱,其中烷基具有大于10个碳原子,或12个碳原子或16个碳原子。