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:
Mar. 17, 1992
Filed:
Aug. 07, 1990
Daniel C Markel, Houston, TX (US);
Schlumberger Technology Corporation, Houston, TX (US);
Abstract
A through-tubing perforating gun includes an angularly shaped base strip having first and second surfaces and including a plurality of recesses in the first surface and a plurality of recesses in the second surface. A plurality of capsule charges are mounted in the plurality of recesses in the first and second surfaces of the base strip and are held in place within the recesses by a plurality of support rings connected to the base strip. The base strip is made of a material which will allow the base strip to withstand detonation of the capsule charges and will not shatter when the charges detonate; however, the support rings are made of a material which will allow the support rings to shatter when the capsule charges detonate. As a result, when the charges detonate, the support rings will shatter into a multitude of pieces allowing the charges to fall to a bottom of the well; however, the base strip will not shatter when the charges detonate and may be retrieved from the borehole for subsequent inspection to determine which charges detonated and which charges did not detonate.