COMPOSITIONS AND METHODS FOR CEMENTING A WELLBORE USING MICROBES OR ENZYMES

摘要

A method of cementing a wellbore penetrating a subterranean formation comprises injecting into the wellbore a settable slurry comprising: an aqueous carrier; an aggregate; urea; a calcium source; and a calcium carbonate producing agent comprising a microbe, an enzyme, or a combination comprising at least one of the foregoing; and allowing the slurry to set.