Patent ID: 7281576

Claim:
A downhole tool for sealing a void in a subterranean formation comprising: an inner tubing formed from a material comprising a ferrous metal and having at least one port disposed at a bottom end through which a first component of a sealant mixture is delivered downhole; an outer tubing disposed around the inner tubing thereby forming an annulus therebetween through which a second component of the sealant mixture is delivered downhole, the outer tubing having a closed bottom end, which extends below the bottom end of the inner tubing; a mixing chamber formed between the bottom end of the inner tubing and the bottom end of the outer tubing into which the first and second components of the sealant mixture combine to form the sealant mixture; and at least one discharge port formed at the bottom end of the outer tubing for discharging the sealant mixture from the mixing chamber.