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. 08, 2025
Filed:
May. 02, 2023
Applicant:
Downhole Products Limited, Aberdeen, GB;
Inventors:
Alexander Craig Mackay, Aberdeen, GB;
Douglas Farley, Missouri City, TX (US);
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 34/06 (2006.01); E21B 17/16 (2006.01); E21B 21/10 (2006.01);
U.S. Cl.
CPC ...
E21B 17/16 (2013.01); E21B 21/10 (2013.01); E21B 34/063 (2013.01);
Abstract
A float collar for assembly with a composite string of downhole tubulars includes: a tubular housing made from a composite material and having couplings formed at longitudinal ends thereof; a float valve disposed in a bore of the housing; a sheath connecting the float valve to the housing and sealing an interface between the float valve and the housing; and a guide operable to prevent side-tracking of a drill bit into the housing while drilling out the float valve and the sheath.