摘要
本文介绍一种新型油井水泥膨胀剂———镁氧类膨胀剂的组成、膨胀性能及应用情况。分析了膨胀机理和影响膨胀的因素，包括膨胀剂的煅烧温度、细度，水泥浆的养护温度、养护压力、水灰比、水泥的碱度等。掺有这种膨胀剂的水泥具有防气窜功能，可用于钻井堵漏、修井和固井作业。
In this review articled the composition of magnesia cement expandant is presented, the expansive mechanism of magnesia cement is described in terms of the hydation rates of expansion sources in the cement, the motive forces for the cement to expand in volume, and the pore structure of the cement stone formed, and some factors influecing the expansion of magnesia cement are discussed (setting temperature and pressure, particle size of magnesia expandant components, water to cement ratio, and alkalinity of the cement).
出处
《油田化学》
CAS
CSCD
北大核心
1997年第4期372-376,共5页
Oilfield Chemistry
关键词
镁氧类膨胀剂
水泥膨胀剂
固井
注水泥
Magnesia Epandant, Additive for Oilwell Cement, Magnesia Expansive Cement, Expansion of Cement System, Expansive Mechanism, Magnesium Oxide, Calcium Oxide, Review
