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:
May. 13, 2014
Filed:
May. 27, 2011
Frank Benjamin Springett, Spring, TX (US);
Christopher Dale Johnson, Cypress, TX (US);
Shern Eugene Peters, Houston, TX (US);
Eric Trevor Ensley, Cypress, TX (US);
Frank Benjamin Springett, Spring, TX (US);
Christopher Dale Johnson, Cypress, TX (US);
Shern Eugene Peters, Houston, TX (US);
Eric Trevor Ensley, Cypress, TX (US);
National Oilwell Varco, L.P., Houston, TX (US);
Abstract
A method for severing a tubular of a wellbore is provided. The method involves positioning a blowout preventer about a tubular, the blowout preventer having a plurality of rams slidably positionable therein and a plurality of blades carried by the rams for engaging the tubular. The method further involves piercing the tubular with a piercing point of at least one of the blades such that a portion of the tubular is dislodged therefrom, and raking through the tubular with a cutting surface of at least one of the blades.