Settable, form-filling loss circulation control compositions comprising in situ foamed non-hydraulic sorel cement systems and method of use
First Claim
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1. A method of treating a lost circulation zone, the method comprising:
- a) forming a foamed cementitious composition comprising;
magnesium oxide (MgO);
a salt selected from the group consisting of magnesium chloride (MgCl2), magnesium sulfate (MgSO4), ammonium hydrogen phosphate (NH4H2PO4), and hydrates thereof;
an oxidizer;
a nitrogen gas-generating compound; and
a foam surfactant; and
b) introducing the foamed cementitious composition into the lost circulation zone.
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Abstract
This document relates to settable, non-hydraulic foamed cement compositions comprising nitrogen gas-generating compositions used for loss circulation control.
24 Citations
5 Claims
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1. A method of treating a lost circulation zone, the method comprising:
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a) forming a foamed cementitious composition comprising; magnesium oxide (MgO); a salt selected from the group consisting of magnesium chloride (MgCl2), magnesium sulfate (MgSO4), ammonium hydrogen phosphate (NH4H2PO4), and hydrates thereof; an oxidizer; a nitrogen gas-generating compound; and a foam surfactant; and b) introducing the foamed cementitious composition into the lost circulation zone. - View Dependent Claims (2, 3, 4, 5)
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Specification