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    • 6. 发明申请
    • Aqueous Two-Phase Emulsion Gel Systems for Zone Isolation
    • 用于区域隔离的水性两相乳液凝胶体系
    • US20090133868A1
    • 2009-05-28
    • US11944681
    • 2007-11-26
    • Philip F. SullivanGary John TustinYenny ChristantiGregory KubalaBruno DrochonTrevor LLoyd Hughes
    • Philip F. SullivanGary John TustinYenny ChristantiGregory KubalaBruno DrochonTrevor LLoyd Hughes
    • E21B33/124
    • C09K8/514C09K8/501C09K8/508C09K8/52C09K8/5751C09K8/588C09K8/68C09K8/88
    • A low viscosity wellbore polymer fluid gelling system comprising an aqueous medium and a water-in-water emulsion comprising a plurality of polymers or oligomers, including at least one removable polymer or oligomer, and at least one gelling polymer or oligomer, wherein said fluid has a low viscosity when injected, and the gelling polymer forms a gel downhole which has a storage modulus of at least about 60 Pa after the removable polymer is removed from the fluid. The invention also provides a method of isolating at least one zone of a subterranean formation penetrated by a wellbore, including the steps of preparing a water-in-water emulsion comprising a plurality of polymers or oligomers including at least one removable polymer or oligomer, and at least one gellable polymer or oligomer; combining the water-in-water emulsion with an aqueous medium to prepare a low viscosity polymer fluid; introducing the fluid into a zone in the formation, removing the at least one removable polymer or oligomer, and allowing a remaining gellable oligomer, polymer or polymers to form a gel, isolating the zone from at least one other zone in the formation.
    • 一种低粘度井筒聚合物流体胶凝体系,其包含含水介质和包含多种聚合物或低聚物(包括至少一种可除去的聚合物或低聚物)和至少一种胶凝聚合物或低聚物的水包油乳液,其中所述流体具有 注射时具有低粘度,并且胶凝聚合物形成凝胶井下,其中可除去的聚合物从流体中除去后具有至少约60Pa的储能模量。 本发明还提供了一种分离由井筒渗透的地层的至少一个区域的方法,包括以下步骤:制备包含多个聚合物或低聚物的水包油乳液,所述聚合物或低聚物包括至少一种可除去的聚合物或低聚物,以及 至少一种可凝胶聚合物或低聚物; 将水包油乳液与水性介质结合以制备低粘度聚合物流体; 将流体引入地层中的区域,除去至少一种可除去的聚合物或低聚物,并允许剩余的可凝胶低聚物,聚合物或聚合物形成凝胶,将该区域与地层中的至少一个其它区域隔离。