Fine particle size cement compositions.

摘要

Fine particle size cement compositions useful for cementing in a subterranean zone penetrated by a well bore, comprise a fine particle size hydraulic cement, from 20% to 90% (by weight of the cement) of a fine particle size pozzolanic material, and sufficient water to form a pumpable slurry. The particle size of the cement and of the pozzolanic material is not more than 30 microns. The Blaine Fineness of the cement is no less than 6000 cm<2>/g and of the pozzolanic material is no less than 5000 cm<2>/g.