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. 03, 2020
Filed:
Nov. 07, 2017
Applicant:
Baker Hughes, a GE Company, Llc, Houston, TX (US);
Inventors:
Darin H. Duphorne, Jersey Village, TX (US);
Gregory L. Hern, Porter, TX (US);
William A. Hered, Houston, TX (US);
Assignee:
BAKER HUGHES, A GE COMPANY, LLC, Houston, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 21/10 (2006.01); E21B 34/10 (2006.01); E21B 7/20 (2006.01); E21B 45/00 (2006.01); E21B 34/14 (2006.01);
U.S. Cl.
CPC ...
E21B 21/103 (2013.01); E21B 7/203 (2013.01); E21B 34/10 (2013.01); E21B 45/00 (2013.01); E21B 34/14 (2013.01); E21B 2200/06 (2020.05);
Abstract
A method and apparatus for controlling fluid flow through a drill string includes a housing having an axis, a radial wall with a bore extending axially therethrough, and an aperture formed in the radial wall. The aperture is in fluid communication with the bore. A piston is located inside the housing and has an orifice configured to permit axial fluid flow through the housing. The spring axially biases the piston to a closed position.