Method and apparatus for severing tubular members

Details Method and apparatus for severing tubular members Method and apparatus for severing tubular members

1994-05-17

1996-06-11

Taylor, Dennis L.

Hydraulic and earth engineering

Marine structure or fabrication thereof

102313, 166 55, 166361, 405228, 405232, E02D 904

Patent

active

055250106

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.

REFERENCES:
patent: 4015433 (1977-04-01), Shibata
patent: 4528910 (1985-07-01), Blanc et al.
patent: 4768899 (1988-09-01), Dysarz
patent: 4787315 (1988-11-01), Kenny
patent: 4808037 (1989-02-01), Wade et al.
patent: 4909320 (1990-03-01), Hebert et al.
patent: 5177321 (1993-01-01), Kenny
patent: 5238063 (1993-08-01), Hebert
patent: 5360292 (1994-11-01), Allen et al.

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