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Settable, form-filling loss circulation control compositions comprising in situ foamed calcium aluminate cement systems and methods of using them

  • US 10,450,495 B2
  • Filed: 10/25/2018
  • Issued: 10/22/2019
  • Est. Priority Date: 01/24/2018
  • Status: Active Grant
First Claim
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1. A method of treating a loss circulation zone in a subterranean formation, the method comprising:

  • a) forming a foamed cementitious composition comprising;

    calcium aluminate;

    a nitrogen gas-generating compound;

    an amine activator comprising an ethyleneamine; and

    a foam surfactant; and

    b) introducing the foamed cementitious composition into the loss circulation zone.

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