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    • 10. 发明申请
    • METHOD FOR GENERATING SOFTENED INJECTION WATER
    • 生产强化注射水的方法
    • WO2009123683A3
    • 2009-11-26
    • PCT/US2009001816
    • 2009-03-24
    • BP CORP NORTH AMERICA INCMCGUIRE PATRICK LEE
    • MCGUIRE PATRICK LEE
    • C02F1/42
    • E21B43/20B01J49/53C02F1/42C02F2001/425C02F2103/10C02F2209/001C02F2209/055C02F2303/16C09K8/58
    • A method for generating a softened injection water comprising: (A) generating the softened injection water by (i) introducing a source water having a total dissolved solids content of up to 15,000 mg/litre and having a multivalent cation content of greater than 40 mg/litre to a vessel that contains a bed of a cation exchange resin in its monovalent cation form, (ii) passing the source water through the cation exchange resin bed so that at least a portion of the multivalent cations in the source water are replaced by monovalent cations from the cation exchange resin, and (iii) withdrawing from the vessel the softened injection water having a multivalent cation content of up to 40 mg/litre; (B) regenerating the cation exchange resin by (i) introducing a regenerating brine to the vessel, (ii) passing the regenerating brine through the resin bed and (iii) withdrawing from the vessel a brine containing displaced multivalent cations, wherein the regenerating brine is a naturally occurring high salinity water having a concentration of monovalent cations and of multivalent cations such that the Softening Limit for the source water is up to 40 mg/litre of multivalent cations wherein the Softening Limit for the source water is defined as the Softening Ratio multiplied by the concentration of multivalent cations in the source water (mg/litre) and wherein the Softening Ratio is defined as: (molar concentration of monovalent cations in the source water)2/(molar concentration of multivalent cations in the source water) : (molar concentration of monovalent cations in the regenerating brine)2/(molar concentration of multivalent cations in the regenerating brine).
    • 一种用于产生软化注射用水的方法,包括:(A)通过(i)引入总溶解固体含量高达15,000mg /升并且多价阳离子含量大于40mg的源水,产生软化注入水 /升至含有一价阳离子形式的阳离子交换树脂床的容器,(ii)使源水通过阳离子交换树脂床,使得源水中的至少一部分多价阳离子被 来自阳离子交换树脂的一价阳离子,和(iii)从容器中取出多价阳离子含量高达40mg /升的软化注入水; (B)通过(i)将再生盐水引入容器中再生阳离子交换树脂,(ii)使再生盐水通过树脂床,和(iii)从容器中取出含有置换的多价阳离子的盐水,其中再生盐水 是具有一价阳离子和多价阳离子浓度的天然存在的高盐度水,使得源水的软化限度高达40mg /升多价阳离子,其中源水的软化极限定义为软化比 乘以源水中多价阳离子的浓度(mg / l),其中软化比定义为:(源水中一价阳离子的摩尔浓度)2 /(源水中多价阳离子的摩尔浓度): (再生盐水中的一价阳离子的摩尔浓度)2 /(再生盐水中多价阳离子的摩尔浓度)。