The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 12, 2006
Filed:
Dec. 15, 2003
Antony F. Grattan, Mansfield, TX (US);
Michael L. Patterson, Alvarado, TX (US);
James M. Barker, Mansfield, TX (US);
Thomas J. Wuensche, Granbury, TX (US);
Antony F. Grattan, Mansfield, TX (US);
Michael L. Patterson, Alvarado, TX (US);
James M. Barker, Mansfield, TX (US);
Thomas J. Wuensche, Granbury, TX (US);
Halliburton Energy Services, Inc., Houston, TX (US);
Abstract
A system and method for making and using a multi-point initiation explosive device that produces an enhanced pressure wave for severing tubing, pipe or casing in an oil or gas well. At least two opposed initiators initiate a column of explosive material from opposite ends, thereby generating opposing pressure waves propagating toward a midpoint between the initial initiators. A shaped-charge assembly with a liner located at the midpoint initiates immediately prior to the arrival of the opposing pressure waves and forms a fast moving jet to pre-score the target pipe prior to the arrival of the pressure pulse propagating from the initial detonations.