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. 22, 1987
Filed:
Jul. 15, 1986
Louis M Gambertoglio, The Woodlands, TX (US);
Hughes Tool Company, Houston, TX (US);
Abstract
A disconnect sub for a tubing conveyed perforating gun is shown which includes a tubular member and a sliding mandrel telescopingly received within the interior of the tubular member. A perforating gun is supported by the lower end of the sliding mandrel and the mandrel has an upper colleted end which is initially retained within the tubular member on an internal profile. A retaining sleeve has a lower extent which initially underlies the colleted end of the sliding mandrel within the tubular member. After firing the perforating gun, the sliding mandrel is released by draining an initially filled fluid chamber within the device and by locking the retaining sleeve out of engagement with the colleted end of the mandrel, thereby allowing the mandrel to slide from within the tubular member and fall away within the well bore.