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    • 8. 发明授权
    • Method for acidizing subterranean formations
    • 酸化地下地层的方法
    • US4103742A
    • 1978-08-01
    • US643983
    • 1975-12-24
    • Billy L. Swanson
    • Billy L. Swanson
    • C09K8/72C09K17/22E21B43/27
    • C09K8/76Y10S507/903Y10S507/933
    • Gelled acidic compositions suitable for either matrix acidizing or fracture-acidizing of subterranean formations, and methods of using said compositions in acidizing operations, are provided. Said compositions comprise water, a water-dispersible polymer of acrylamide, an acid, and an aldehyde capable of causing gelation of an aqueous dispersion of said polymer, said acid, and said aldehyde. Preferably a mixture of aldehydes is used. However, either a mixture of aldehydes or a single aldehyde can be used with certain polymers, and in certain methods comprising particular combinations of steps.
    • 提供了适用于地下地层的基质酸化或断裂酸化的胶凝酸性组合物,以及在酸化操作中使用所述组合物的方法。 所述组合物包含水,能够引起所述聚合物,所述酸和所述醛的水分散体凝胶化的丙烯酰胺,酸和醛的水分散性聚合物。 优选使用醛的混合物。 然而,醛或单醛的混合物可以与某些聚合物一起使用,并且在某些方法中包括特定的步骤组合。
    • 9. 发明授权
    • Compositions for acid treating subterranean formations
    • 酸处理地层的组合物
    • US4997582A
    • 1991-03-05
    • US335150
    • 1989-04-07
    • Earl Clark, Jr.Billy L. Swanson
    • Earl Clark, Jr.Billy L. Swanson
    • C09K8/72
    • C09K8/74
    • Methods and compositions for acid treating subterranean formations penetrated by well bores are provided. The compositions are each comprised of an aqueous acid solution, one or more acrylamide polymers dissolved in the acid solution, a liquid hydrocarbon dispersed in the acid solution, and one or more nonionic surface active agents having at least one reactive hydroxyl group per molecule. The acrylamide polymer or polymers increase the viscosity of the acid solution and the surface active agent or agents interact with the polymer of polymers whereby stabilized high viscosity results. The subterranean formation acid treating methods of the invention are carried out by introducing the high viscosity acid compositions therein, allowing the compositions to react until spent and recovering the compositions.
    • 提供了用井眼渗透的地下地层的酸处理方法和组合物。 所述组合物各自包含酸水溶液,溶解在酸性溶液中的一种或多种丙烯酰胺聚合物,分散在酸性溶液中的液体烃,以及每分子具有至少一个反应性羟基的一种或多种非离子表面活性剂。 丙烯酰胺聚合物或聚合物增加酸溶液的粘度,并且表面活性剂或试剂与聚合物的聚合物相互作用,从而导致稳定的高粘度。 本发明的地层酸处理方法是通过在其中引入高粘度酸组合物进行的,使组合物反应直至消耗并回收组合物。
    • 10. 发明授权
    • Methods and compositions for acid treating subterranean formations
    • 酸处理地下地层的方法和组合物
    • US4775010A
    • 1988-10-04
    • US142484
    • 1988-01-06
    • Earl Clark, Jr.Billy L. Swanson
    • Earl Clark, Jr.Billy L. Swanson
    • C09K8/72E21B43/27
    • C09K8/74Y10S507/933
    • Methods and compositions for acid treating subterranean formations penetrated by well bores are provided. The compositions are each comprised of an aqueous acid solution, one or more acrylamide polymers dissolved in the acid solution, a liquid hydrocarbon dispersed in the acid solution, and one or more nonionic surface active agents having at least one reactive hydroxyl group per molecule. The acrylamide polymer or polymers increase the viscosity of the acid solution and the surface active agent or agents interact with the polymer or polymers whereby stabilized high viscosity results. The subterranean formation acid treating methods of the invention are carried out by introducing the high viscosity acid compositions therein, allowing the compositions to react until spent and recovering the compositions.
    • 提供了用井眼渗透的地下地层的酸处理方法和组合物。 所述组合物各自包含酸水溶液,溶解在酸性溶液中的一种或多种丙烯酰胺聚合物,分散在酸性溶液中的液体烃,以及每分子具有至少一个反应性羟基的一种或多种非离子表面活性剂。 丙烯酰胺聚合物或聚合物增加酸溶液的粘度,并且表面活性剂或试剂与聚合物或聚合物相互作用,从而导致稳定的高粘度。 本发明的地层酸处理方法是通过在其中引入高粘度酸组合物进行的,使组合物反应直至消耗并回收组合物。