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AssigneeCR Minerals Company, LLC
InventorsJoseph Earl Thomas, Jeffrey Alexander Whidden
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Some embodiments of the present invention comprise a method of cementing comprising: placing a settable composition into a well bore, the settable composition comprising remediated coal ash, hydraulic cement, and water; and allowing the settable composition to set. Other embodiments comprise a method of cementing comprising: placing a settable composition into a well bore, the settable composition comprising remediated coal ash, calcium hydroxide (lime), and water; and allowing the settable composition to set. Other embodiments comprise a settable composition comprising: remediated coal ash, hydraulic cement, calcium hydroxide, natural pozzolan and water; and allowing the composition to set. Other embodiments comprise a settable composition comprising remediated coal ash and any combination of hydraulic cement, calcium hydroxide, slag, fly ash, and natural or other pozzolan.
A settable composition for cementing, the settable composition comprising (a) remediated coal ash, (b) cement and/or calcium hydroxide, and (c) optionally water, wherein said remediated coal ash contains non-spec coal ash and a natural pozzolan, wherein said non-spec coal ash does not meet specifications under ASTM C618, ASTM C1697, and/or AASHTO M29, wherein said natural pozzolan is present in said remediated coal ash in a concentration of about 1 wt % to about 99 wt %, and wherein said remediated coal ash is pozzolanic.
Dependencies are inferred from the claim text.