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:
Nov. 25, 2008
Filed:
Mar. 29, 2006
William M. Roberts, Tomball, TX (US);
George J. Melenyzer, Tomball, TX (US);
William M. Roberts, Tomball, TX (US);
George J. Melenyzer, Tomball, TX (US);
Smith International, Inc., Houston, TX (US);
Abstract
A downhole tool includes a mandrel, a sealing element disposed around the mandrel, an upper cone disposed above the sealing element and a lower cone disposed below the sealing element, an upper slip assembly disposed above the upper cone and a lower slip assembly disposed below the sealing element, at least one lock ring configured to maintain energization of the sealing element when the downhole tool is set, and a secondary lock that couple the upper cone with the at least one lock ring. A method of increasing pack-off force of a downhole tool includes setting the downhole tool and energizing further the sealing element by applying a differential pressure to the downhole tool. A method of retrofitting a downhole tool includes providing a secondary lock disposed around a mandrel, the secondary lock including at least one arm having an axial portion extending downwardly therefrom and a threaded portion, and assembling the secondary lock to the downhole tool, the assembling including engaging the threaded portion of the secondary lock to a threaded surface of an upper cone disposed around the mandrel of the downhole tool.