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Cement compositions containing metphosphate and methods of use

  • US 9,038,722 B2
  • Filed: 06/04/2013
  • Issued: 05/26/2015
  • Est. Priority Date: 10/15/2012
  • Status: Active Grant
First Claim
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1. A method of cementing a treatment zone of a well, the method comprising the steps of:

  • (A) forming a cement composition comprising;

    (i) hydraulic cement, wherein the hydraulic cement has a ratio of CaO to SiO2 in the range of 2.0 to 4.0;

    (ii) a water-soluble metaphosphate in a concentration of at least 2.5% bwoc; and

    (iii) water; and

    (B) introducing the cement composition into the well.

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