Methods for curing lost circulation in subterranean formations

A method comprising:

• (a) introducing a first portion of a first fluid pill comprising calcium chloride into a subterranean formation containing a first lost circulation zone via a wellbore,
• wherein the first lost circulation zone comprises one or more lost circulation zones;
• (b) introducing a first portion of a second fluid pill comprising a sodium silicate into the subterranean formation via the wellbore;
• (c) allowing the first portion of the first fluid pill to interact with the first portion of the second fluid pill to form a solid within the first lost circulation zone;
• (d) introducing a first cement comprising an extender, a retarder, a defoamer, or any combination thereof into the subterranean formation after introducing the first portions of the first fluid pill and the second fluid pill into the subterranean formation via the wellbore;
• (e) allowing at least a portion of the first cement to solidify within the at least first lost circulation zone;
• (f) consecutively introducing a second portion of the first fluid pill and a second portion of the second fluid pill into the subterranean formation via the wellbore after allowing at least the portion of the first cement to solidify within the first lost circulation zone;
• (g) introducing a second cement having a higher thixotropy than the first cement into the subterranean formation via the wellbore after introducing the second portions of the first fluid pill and the second fluid pill into the subterranean formation;
• wherein the second cement does not comprise an extender and a retarder;
• (h) allowing at least a portion of the second cement to solidify within the first lost circulation zone;
• (i) consecutively introducing a third portion the first fluid pill and a third portion of the second fluid pill into the subterranean formation via the wellbore after allowing at least the portion of the second cement to solidify within the first lost circulation zone;
• (j) introducing a third cement having a higher thixotropy than the second cement into the subterranean formation via the wellbore;
• wherein the third cement does not comprise an extender and a retarder;
• and
• (k) allowing at least a portion of the third cement to solidify within the first lost circulation zone;
• wherein a flow of fluids from the wellbore into the subterranean formation is mitigated due to the solidification of at least the portions, respectively, of the first cement, the second cement, and the third cement in the first lost circulation zone.