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. 23, 2004
Filed:
Jul. 11, 2002
Applicant:
Inventors:
Michael D. Stevens, Duncan, OK (US);
Earl D. Webb, Wilson, OK (US);
Aimee K. Greening, Duncan, OK (US);
Assignee:
Halliburton Energy Services, Inc., Duncan, OK (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 1/714 ; E21B 3/314 ; E21B 3/406 ;
U.S. Cl.
CPC ...
E21B 1/714 ; E21B 3/314 ; E21B 3/406 ;
Abstract
A float apparatus for use in a casing string. The float apparatus includes an outer case having a check valve positioned therein. A body portion which may be comprised of high compressive strength cement affixes the check valve to the outer case. The check valve includes a valve body and a valve element. The valve body defines a valve seat and the valve element is deformable so that it will conform to the shape of the valve seat and seal against flow in the casing.