EXPANDABLE METAL ALLOY PLUGS FOR ABANDONED WELLS

摘要

Methods and systems are provided for plugging a wellbore having a casing and cement surrounding the casing and traversing a formation, which involves at least one tool located in the wellbore that is configured and used to deliver alloy material to a target area in the wellbore, wherein the alloy material includes a metal alloy. The at least one tool can be further configured and used to apply heat to the alloy material in the target area to melt the metal alloy of the alloy material. Volumetric expansion of the metal alloy is confined while permitting the melted metal alloy to cool and solidify to form a plug at the target area in the wellbore.