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, 1995
Filed:
Feb. 07, 1994
Alan C Hartley, Rocky Rapids, CA;
Russell S Krasey, Calgary, CA;
Canadian Occidental Petroleum, Ltd., Calgary, CA;
Abstract
An apparatus and method for perforating in deviated and horizontal wells. A firing pin and charge housing is integrally secured to a generally tubular body. The firing pin and charge housing has a structure defining at least one recess extending through the firing pin and charge housing and communicating with at least one tubular bore within the tubular body. The recess comprises at least one charge recess communicating with the at least one tubular bore. A firing pin is biasingly disposed in the recess and an explosive member is disposed in the charge recess. A detonator is positioned in the recess and is engaged to the explosive member for detonating the latter. A sleeve member is slidably disposed in the tubular bore and has at least one sleeve opening and a shear pin bound thereto and extending through the recess for engaging the firing pin. The sleeve member includes a sleeve seat for receiving a plug to slidably move the sleeve member and cause the shear pin to shear and to align the sleeve opening with the charge recess and cause the firing pin to contact the detonator and discharge the explosive member.