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    • 8. 发明授权
    • Maleimide-modified bioresistant polymers and enhanced oil recovery
method employing same
    • 马来酰亚胺改性的生物抗性聚合物和采用其的增强的油回收方法
    • US4653584A
    • 1987-03-31
    • US739480
    • 1985-05-30
    • Lawrence E. BallWilliam M. GriffinKathleen M. AntlogaAmy L. Nemecek
    • Lawrence E. BallWilliam M. GriffinKathleen M. AntlogaAmy L. Nemecek
    • C08F220/56C09K8/588E21B43/22
    • C09K8/588C08F220/56Y10S507/936
    • A polymer is disclosed which is represented by the formula ##STR1## wherein: Y is hydrogen, ammonium, an alkali metal or an alkaline earth metal; R.sup.1 and R.sup.2 are independently hydrogen, hydroxyl, amino, nitro, sulfo, phospho, carboxy, carboxyamido groups or hydrocarbon groups of 1 to about 20 carbon atoms; R.sup.3 is hydrogen or a hydrocarbon group of from 1 to about 12 carbon atoms; R.sup.4 and R.sup.5 are independently hydrogen or alkyl groups of 1 to about 3 carbon atoms; m is a number sufficient to provide the acid or salt portion of said polymer at a level of from zero to about 90% by weight of the total weight of said polymer; n is a number sufficient to provide the amide portion of said polymer at a level of from about 10% to about 99.5% by weight of the total weight of said polymer; p is a number sufficient to provide the maleimide portion of said polymer at a level of at least about 0.2% by weight of the total weight of said polymer; and x is a number sufficient to provide said polymer with a molecular weight of at least about 100,000. A method for recovering oil from a subterranean formation comprising injecting into said formation an aqueous composition comprising a thickening amount of the foregoing polymer is also disclosed.
    • 公开了由下式表示的聚合物:其中:Y是氢,铵,碱金属或碱土金属; R 1和R 2独立地是氢,羟基,氨基,硝基,磺基,磷酸基,羧基,羧基酰胺基或具有1至约20个碳原子的烃基; R3是氢或1至约12个碳原子的烃基; R 4和R 5独立地是氢或1至约3个碳原子的烷基; m是足以提供所述聚合物的酸或盐部分的量为所述聚合物总重量的0至约90重量%的数量; n是足以使所述聚合物的酰胺部分以所述聚合物总重量的约10重量%至约99.5重量%的水平提供的数字; p是足以提供所述聚合物的马来酰亚胺部分至少为所述聚合物总重量的约0.2重量%的数量; 并且x是足以提供所述聚合物具有至少约100,000的分子量的数字。 还公开了一种从地层中回收油的方法,包括向所述地层注入包含增稠量的上述聚合物的含水组合物。