Abstract: The invention relates to an explosive charge assembly for cutting tubular members, particularly underwater. The assembly is lowered into the tubular member to a distance where the cut is to be performed. A shaped charge carrier has a pair of parallel circular plates, a casing unitary connected to the plates and a truncated shaped charge liner. An inflatable bladder surrounding the casing expands to create a stand off distance between the wall of the tubular member and the shell of the assembly. A plurality of centralizer members allow to adjust position of the shell in the tubular member prior to detonation.

Abstract: A method and apparatus for severing tubular members below a mud line. The mud is evacuated from the target area of the tubular member and the apparatus is lowered through the inner opening of the tubular member to the target area. A housing of the apparatus carries a plurality of centralizing fins which hinge 90 degrees in relation to their pre-deployed position and centralize the housing in the target area. An explosive material contained in the housing is extruded, by movement of the piston, into a flexible bag secured at a lower portion of the housing, forcing the bag to form a receptacle for the explosive. A sidewall of the bag protector pivots at a right angle to form a support for the receptacle with the explosive.