Methods, systems, and compositions for in-situ foam generation for liquid unloading

Abstract

Methods for unloading accumulated liquids from a wellbore may comprise: providing a plurality of encapsulated foam generating agents comprising a gas-producing agent; a foam stabilizer; a foaming agent; an optional internal coating material; an external coating material; and placing the encapsulated foam generating agents into a wellbore, the wellbore having accumulated liquids; allowing a foam to generate in the wellbore through decomposition of the coating materials of the encapsulating foam generating agents; and unloading at least some of the accumulated liquids from the wellbore through recovery of the foam. Systems for unloading accumulated liquids from a wellbore may comprise the foregoing encapsulated foam generating agents and stimulating device configured to stimulate the encapsulated foam generating agent.

Dependencies are inferred from the claim text.