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Well cement compositions comprising biowaste ash and methods of use

  • US 8,733,440 B2
  • Filed: 07/02/2009
  • Issued: 05/27/2014
  • Est. Priority Date: 07/02/2009
  • Status: Expired due to Fees
First Claim
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1. A method of well cementing comprising:

  • introducing a cement composition into an annulus between a subterranean formation and a pipe string disposed in the subterranean formation, wherein the cement composition comprises;

    hydraulic cement comprising at least one cement selected from the group consisting of a Portland cement, a pozzolana cement, a gypsum cement, a high-alumina-content cement, a slag cement, a silica cement, and combinations thereof,water in an amount sufficient to form a pumpable slurry and present between about 40% to about 200% by weight of the cementitious components, andbiowaste ash that does not include fly ash or rice hull ash; and

    allowing the cement composition to set.

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