Downhole severing tools employing a two-stage energizing material and methods for use thereof

It is sometimes necessary to sever a downhole tubular structure in the course of conducting subterranean operations. Detonation of an explosive material may be used to sever a tubular structure in some instances. Downhole severing tools may comprise: a housing; a two-stage energizing material within...

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Bibliographic Details
Main Authors Davidson, Justine M, Morton, Kevin O, Lin, Steve S, Grattan, Antony F
Format Patent
LanguageEnglish
Published 09.10.2018
Subjects
AMMUNITION
BLASTING
CHEMISTRY
EARTH DRILLING
EARTH DRILLING, e.g. DEEP DRILLING
EXPLOSIVES
EXPLOSIVES OR THERMIC COMPOSITIONS
FIXED CONSTRUCTIONS
HEATING
LIGHTING
MANUFACTURE THEREOF
MATCHES
MECHANICAL ENGINEERING
METALLURGY
MINING
OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
USE OF SINGLE SUBSTANCES AS EXPLOSIVES
WEAPONS
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Summary:It is sometimes necessary to sever a downhole tubular structure in the course of conducting subterranean operations. Detonation of an explosive material may be used to sever a tubular structure in some instances. Downhole severing tools may comprise: a housing; a two-stage energizing material within the housing, the two-stage energizing material comprising a high explosive and a reactive energizing material; at least one initiator coupled to the two-stage energizing material at least at a first location; and a detonator coupled to the at least one initiator; wherein upon detonation of the two-stage energizing material, the high explosive undergoes a primary reaction that propagates a secondary reaction of the reactive energizing material.
Bibliography:Application Number: US201415121233