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. 03, 1996
Filed:
Jul. 12, 1995
Robert K Bethel, Houston, TX (US);
Michael B Grayson, Houston, TX (US);
James Ellis, Houston, TX (US);
Western Atlas International, Inc., Houston, TX (US);
Abstract
The invention is an apparatus for initiating a wellbore perforator comprising a first firing head for generating a first explosive signal when a first actuation signal is applied to the first firing head, a second firing head for generating a second explosive signal when a second actuation signal is applied to the second firing head, a first means for transferring the first explosive signal to shaped charges in the perforator including a first bulkhead interposed between the shaped charges and the first means for preventing transfer of low order initiation of the first means to the shaped charges, and a second means for transferring the second explosive signal to the shaped charges including a second bulkhead interposed between the shaped charges and the second means for preventing transfer of low order initiation of the second means to the shaped charges.