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:
Apr. 04, 2006
Filed:
Nov. 14, 2002
Herve Ohmer, Houston, TX (US);
Ricardo M. Carossino, Stafford, TX (US);
Jean-marc Follini, Houston, TX (US);
Mikhail V. Gotlib, Houston, TX (US);
Herve Ohmer, Houston, TX (US);
Ricardo M. Carossino, Stafford, TX (US);
Jean-Marc Follini, Houston, TX (US);
Mikhail V. Gotlib, Houston, TX (US);
Schlumberger Technology Corporation, Sugar Land, TX (US);
Abstract
A system and method for preventing blowouts during the deployment of a casing string into a wellbore. The system includes securing a casing coupling to a casing string and securing a retrievable check valve within the casing coupling. The retrievable check valve allows fluid from the surface to be pumped through the retrievable check valve. However, the retrievable check valve prevents upward fluid flow from the wellbore through the retrievable check valve to the surface.