作者: Louis H. Eilers , Erik B. Nelson
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摘要: A hydratable cement composition useful for preparing a pectolite-containing expanding at temperatures above about 150° C. comprising water soluble sodium salt of weak acid, 0.1 molar aqueous solution which has pH between 7.5 and 11.5, calcium source, silicon where the atomic ratio to ranges from 0.3:0.6:1 0.03:1:1; slurries prepared therefrom use such plugging subterranean cavities temperature least The invention is expansive having 0.2 2 percent expansion, by volume, when cured