John Wisotski
Engineers at Knoxville Way, Denver, CO
License number
Colorado 8283
Issued Date
Dec 16, 1967
Renew Date
Apr 1, 1998
Expiration Date
Apr 1, 1998
Type
Professional Engineer
Address
Address
2713 S Knoxville Way S. KNOXVILLE WY, Denver, CO 80227
Professional information
Earth Fracturing Apparatus
US Patent:
4160412, Jul 10, 1979
Filed:
Jun 27, 1977
Appl. No.:
5/810072
Inventors:
William H. Snyer - Littleton CO
Ralph E. Williams - Denver CO
John Wisotski - Denver CO
Ralph E. Williams - Denver CO
John Wisotski - Denver CO
International Classification:
E21B 4311
US Classification:
102 20
Abstract:
An earth fracturing apparatus has a casing of reactive metal containing a central, double ended charge load that is simultaneously detonated from both ends; and a pair of opposed end charges at opposite sides of the central charge load, the end charges being concavely dished toward the central charge load and having a liner of reactive metal on the dished face. The end charges are simultaneously peripherally initiated to explode with a collapsing detonation wave toward the central charge load. Void spaces between each end charge and the central charge load contain an oxidizer that may be under pressure. In a modified form of the apparatus, the end charges are omitted and the central charge load alone acts as a perforator for well pipe.