EXPLOSIVE PIPE CRIMPING METHOD AND DEVICES,申请号CA19922067065-传众专利搜索

EXPLOSIVE PIPE CRIMPING METHOD AND DEVICES

申请公布号：CA2067065(A1)

申请号：CA19922067065

申请日期：1992.04.24

申请公布日期：1992.10.27

申请人：

HUDAK, DAVID;MCQUILKIN, ANDREW;MURRAY, STEPHEN B.;RITZEL, DAVID V.

发明人：HUDAK, DAVID;MCQUILKIN, ANDREW;MURRAY, STEPHEN B.;RITZEL, DAVID V.

分类号：F42D1/00;(IPC1-7):F42B1/02

主分类号：F42D1/00

摘要："EXPLOSIVE PIPE CRIMPING METHOD AND DEVICES" A main charge of explosive is positioned symmetrically about a passageway-forming tubular member, such as a well pipe assembly. The charge is outwardly and radially spaced from the member and is coupled thereto by a dense medium, such as soil, which is adapted to transfer the produced explosive energy to the tubular member in the form of a pressure pulse applied by the medium. Initiation charges are supplied at the outer surface of the main charge, to initiate a detonation wave directed at the tubular member. A layer of dense medium is provided to confine the non-coupled surface of the charge and retard venting of explosive gases away from the tubular member. In the end result, concentrated, converging pressure pulses are applied to the tubular member on detonation, to cause it to be symmetrically crimped to restrict the passageway.