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. 05, 2017
Filed:
Jan. 15, 2014
Applicant:
Halliburton Energy Services, Inc., Houston, TX (US);
Inventors:
Henry Eugene Rogers, Duncan, OK (US);
Earl Don Webb, Wilson, OK (US);
Assignee:
Halliburton Energy Services, Inc., Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 34/00 (2006.01); E21B 34/06 (2006.01); E21B 21/10 (2006.01); E21B 19/00 (2006.01);
U.S. Cl.
CPC ...
E21B 34/00 (2013.01); E21B 19/002 (2013.01); E21B 21/10 (2013.01); E21B 34/06 (2013.01);
Abstract
A floating apparatus for use in a casing string and especially for use in offshore casing operations. The apparatus includes a valve configured such that, when there is a pressure differential across the valve below a predetermined mid-pressure threshold, the valve prevents fluid flow and, when the pressure differential exceeds a predetermined high-pressure threshold, said valve non-resiliently allows fluid flow across the valve.