Apparatus for severing tubular members

Details Apparatus for severing tubular members Apparatus for severing tubular members

1991-07-22

1993-01-05

Nelson, Peter A.

Ammunition and explosives

Blasting

Patterned blasting

102313, 166 55, 166299, 175 451, F42B 300, E21B 43117

Patent

active

051773210

ABSTRACT:
The invention relates to an apparatus for severing tubular members and is provided with a carrier, which carries a sparging assembly and an explosive assembly downwardly into the tubular member to be severed. The outlet of the sparging assembly is below the lower end of the carrier and is at a level adjacent to the level of the explosive charge carried by the explosive assembly. The sparging assembly dislodges and agitates the debris accumulated within the tubular member and evacuates it from the level, wherein it is deployed, simultaneously allowing progression of the explosive assembly downward along the interior of the tubular member.

REFERENCES:
patent: 3958639 (1976-05-01), Daniel
patent: 4181196 (1980-01-01), Darby et al.
patent: 4662451 (1987-05-01), Boade
patent: 4683943 (1987-08-01), Hill et al.
patent: 4756371 (1988-07-01), Brieger
patent: 5031940 (1991-07-01), Kenny

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