Viscoelastic surfactant-based treatment fluids for use with lost circulation materials

A treatment fluid comprising:

• an aqueous base fluid;
• at least one viscoelastic surfactant;
• at least one component selected from the group consisting of:
• a divalent salt, a metal salt, a metal oxide, and any combination thereof;
• and
• a lost circulation material,
• wherein the treatment fluid comprises the metal salt and the metal oxide each in an amount of about 10% to about 20%, by weight, based on the weight of the treatment fluid and an amount insufficient to form a set cement.

A method comprising:

• introducing a first treatment fluid into a wellbore penetrating at least a portion of a subterranean formation, the first treatment fluid comprising:
• an aqueous base fluid,
• at least one viscoelastic surfactant;
• at least one component selected from the group consisting of:
• a divalent salt, a metal salt, a metal oxide, and any combination thereof, and
• a lost circulation material,
• wherein the treatment fluid comprises the metal salt and the metal oxide each in an amount of at least about 2 times less than required to set;
• forming a filter cake or a plug comprising at least a portion of the lost circulation material in at least the portion of the subterranean formation;
• introducing a second treatment fluid comprising an acid into the wellbore;
• and
• allowing the second treatment fluid to contact at least a portion of the filter cake or plug, wherein at least the portion of the filter cake or plug at least partially degrades in response to contacting the second treatment fluid.