Inflatable bore hole plug

Abstract

An inflatable down hole bag for insertion in a bore hole, comprising a sealed inflatable body for holding an inflation fluid; a first substance within the sealed inflatable body; a second substance separated from the first substance within the sealed inflatable body; and a release for allowing the second substance to contact the first substance; wherein release of the second substance causes an inflation fluid producing reaction within the sealed inflatable body, thereby inflating the inflatable body, the sealed inflatable body being vacuum sealed so as to hold in place one or both of the first and second substances prior to the release of the second substance.

Dependencies are inferred from the claim text.