油田堵水剂及其新发展

油田堵水已作为油田控水稳油的重要手段，文中综述３０多年发展起来的单液法堵水剂和双液法堵水剂。单液法堵水剂有粒状堵水剂、酸类、聚丙烯酰胺及衍生物、凝胶、冻胶、树脂和稠油类；双液法堵水剂有沉淀型、凝胶型、冻胶型和胶体分散型类。新发展的堵水剂有胶体分散体冻胶、新型沉淀型和复合型等。并对它们的作用、性质等进行了分析。

WATER SHUTOFF AGENTS USED IN OILFLELDS AND THEIR NEW DEVELOPMENT

Water plugging is a major method in oilfields to control water and maintain oil production. In this paper,the single-fluid and double-fluid water shutoff agents developed for more than 30 years were reviewed. The single-fluid water shutoff agents are composed of grain-type,acid-type,polyacrylamide and its derivatives,gel-type from sol or from polymer solution and heavy-crude type. The double-fluid water shutoff agents are classified as precipitation-type,gel-type from sol,gel-type from polymer solution and colloidal dispersant type.Newly developed water shutoff agents are colloidal dispersant gel (CDG),new precipitation-type and complex type. Their functions and properties are also analyzed in this paper.