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CASINGS FOR USE IN A SYSTEM FOR FRACTURING ROCK WITHIN A BORE

United States Patent Application

20160153272
A1
View the Complete Application at the US Patent & Trademark Office
Los Alamos National Laboratory - Visit the Technology Transfer Division Website
In disclosed explosive units for use in a wellbore, the casing can include a tubular outer body comprising grooves, pockets, or other variances in thickness that create stress concentrations that promote shear and tensile fragmentation instead of ductile expansion of the casing, which can negatively impact permeability of a wellbore. In other embodiments, the casing can comprise non-ductile and/or reactive material which responds to explosive or high temperature loading by brittle failure, disintegration, melting, burning, and/or chemically reacting with the energetic materials and/or the borehole environment. Such embodiments can enhance the permeability of the wellbore after detonation.
Mace, Jonathan Lee (Los Alamos, NM), Bronisz, Lawrence E. (Los Alamos, NM), Steedman, David W. (Santa Fe, NM), Brandy, Christopher Robert (Chimayo, NM)
Los Almos National Security, LLC (Los Alamos NM)
14/ 905,361
July 15, 2014
ACKNOWLEDGMENT OF GOVERNMENT SUPPORT [0002] This invention was made with government support under Contract No. DE-AC52-06NA25396 awarded by the U.S. Department of Energy. The government has certain rights in the invention.