Abstract: An apparatus and system designed to prevent cutting gas buildup and explosion of same during the cutting of underwater abandoned wellheads and the like. The present system as configured is primarily designed for use in conjunction with generally longitudinally arranged pipes such as wellhead conductor pipe or the like, and teaches an apparatus configured to slidingly envelope the pipe, having the capability for excavating the area immediately about the pipe such that the apparatus migrates about and down the pipe to a predetermined depth, flushing out the mud about the conductor pipe which sometimes traps cutting torch gas during cutting operations and causes explosions or the like.