油田堵水、封窜用改性氰凝材料  

MODIFIED URETHANE PRECONDENSATES OTPT AND WTPT AS GELLING MATERIALS FOR WATER SHUTOFF/PROFILE MODIFICATION AGENTS

作　　者：刘双平[1] 郝健[1] 张顺军[1] 

机构地区：[1]天津大学化工实验厂,天津300072

出　　处：《油田化学》1999年第4期314-316,371,共4页Oilfield Chemistry

摘　　要：氰凝是一种聚氨酯类的化学灌浆材料。由于它与水反应速度快，在应用于油田堵水和封窜时施工较为困难。为此。Urethane precondensate Qingning TPT is a chemical gelling material for such oilfield operations as water shutoff, profile modification, and channellings sealing in oil production and water injection wells. Its applications are restricted owing to fast reaction with water. Two modified urethane precondensates with all reactive -NCO end groups terminated are prepared: oil soluble, OTPT, and water soluble, WTPT. The OTPT in aqueous emulsion prepared with a surfactant under an appropriate catalyst at elevated temperatures and the WTPT in aqueous solution under an appropriate catalyst(at lower temperatures) or inhibitor (at higher temperatures) can be activated at least after 2 hrs to form strong and elastic gels. WTPT can be used as crosslinker for emulsion type PAM in aqueous solution.

关 键 词：改性 氰凝堵剂 凝胶化 堵水 调剖剂 采油井 封窜 

分 类 号：TE358.3[石油与天然气工程—油气田开发工程]