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:
Jan. 16, 1996
Filed:
Apr. 03, 1995
Applicant:
Inventors:
Martin L Tomek, Houston, TX (US);
Gregory N Gilbert, Missouri City, TX (US);
Assignee:
Halliburton Company, Dallas, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F42R / ; F42C / ; F42C / ;
U.S. Cl.
CPC ...
102312 ; 102325 ; 102332 ; 102251 ; 102263 ; 102277 ;
Abstract
In well perforating operations, it is necessary to detonate shaped charges suspended in the well. To avoid dangerous detonation at the surface, a pressure responsive mechanism is set to respond to a pressure indicative of operation at a selected depth. This pressure setting arms the detonator in cooperation with an electrical arming mechanism operative in response to a selected current flow at a required voltage for a selected interval.