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:
Dec. 16, 2008
Filed:
Aug. 24, 2005
C. Steven Isaacks, Cypress, TX (US);
Harry P. Hiebeler, Houston, TX (US);
Noe Tony Cordova, Houston, TX (US);
Jimmy G. Livingston, Jr., Tomball, TX (US);
Russell C. Gilleylen, Houston, TX (US);
Haresh Ghansyam, Houston, TX (US);
C. Steven Isaacks, Cypress, TX (US);
Harry P. Hiebeler, Houston, TX (US);
Noe Tony Cordova, Houston, TX (US);
Jimmy G. Livingston, Jr., Tomball, TX (US);
Russell C. Gilleylen, Houston, TX (US);
Haresh Ghansyam, Houston, TX (US);
National-Oilwell DHT, L.P., Houston, TX (US);
Abstract
An improved ram inner seal assembly used in ram-type BOPs is disclosed. The disclosed invention provides an inner guide seal assembly that comprises a specially shaped guide body and a separate sealing element. When the ram-type BOP is closed, two opposing rams move toward one another, and the inner guide seal assembly guides a wireline (or other tubular) toward the center of the vertical bore through the BOP. The inner guide seal assembly's proximity to the ram body's centerline axis helps ensure that a positive seal is formed and that no damage occurs to the device in the central bore of the BOP. The separate, specially-shaped sealing element can be easily inserted into and removed from the guide body of the inner guide seal assembly for easy replacement.