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. 03, 2024
Filed:
Aug. 26, 2019
Applicant:
David Jon Tilley, Franklin, LA (US);
Inventor:
David Jon Tilley, Franklin, LA (US);
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 33/08 (2006.01); E21B 17/07 (2006.01); E21B 33/064 (2006.01);
U.S. Cl.
CPC ...
E21B 33/085 (2013.01); E21B 17/073 (2013.01); E21B 33/064 (2013.01);
Abstract
A drill string circulation apparatus has a sleeve member with an elongated tubular body and a longitudinal bore, with an outer diameter suitable for being sealingly gripped by a blowout preventer. A drill string has an outer diameter sized to fit within the sleeve member bore, and has one or more seals disposed on an exterior surface. The seals are sized to create a seal between said sleeve member and the drill string, when the drill string and seals are positioned within the sleeve member bore, while said drill string is still capable of reciprocation and/or rotation within the sleeve member when the seals are within the sleeve member bore.