| 摘要 |
FIELD: chemistry. ^ SUBSTANCE: invention relates to cement grout composition and a well cementing method using the said cement grout. The cement grout contains a cement mixture and water, in which the cement mixture contains at lest 70 vol. % cementing dispersed material and glass microspheres, wherein the water content of the mixture is not more than 50% of the volume of the cement grout, and the cementing dispersed material contains portland cement and microsilica and/or colloidal silicon dioxide in amount of at least 60 vol. %. The well cementing method involves preparation of the said cement grout and pumping into the well. The invention is developed in subclaims. ^ EFFECT: faster strength gain and higher strength. ^ 17 cl, 3 ex, 3 tbl |
