Calcium phosphate cement compositions comprising pumice and/or perlite and associated methods

摘要

Methods and compositions are provided that related to cementing operations. Methods and compositions that include pumice and/or perlite as a replacement for fly ash.

主权项

1. A well cement composition comprising:
calcium aluminate; sodium polyphosphate in an amount of about 2% to about 20% by weight of the cement composition; an additive comprising pumice, wherein the additive has a mean particle size of less than about 15 microns; and water in an amount sufficient to form a pumpable slurry; wherein the additive is present in an amount that will increase a compressive strength of the well cement composition by at least 20% compared to the well cement composition comprising a comparable amount of fly ash instead of the additive.