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:
May. 28, 2019
Filed:
Jan. 21, 2014
Applicant:
Halliburton Energy Services, Inc., Houston, TX (US);
Inventor:
Charles Richard Thomas Hay, Spring, TX (US);
Assignee:
Halliburton Energy Services, Inc., Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 7/24 (2006.01); E21B 47/18 (2012.01); E21B 21/10 (2006.01); E21B 34/06 (2006.01); E21B 44/00 (2006.01); E21B 47/10 (2012.01); E21B 28/00 (2006.01); E21B 34/00 (2006.01);
U.S. Cl.
CPC ...
E21B 7/24 (2013.01); E21B 21/10 (2013.01); E21B 28/00 (2013.01); E21B 34/066 (2013.01); E21B 44/00 (2013.01); E21B 47/10 (2013.01); E21B 47/18 (2013.01); E21B 2034/002 (2013.01);
Abstract
An apparatus and method for creating axial movement of a drill string using a variable valve and a controller. In some embodiments, the controller is a proportional-integral-derivative controller.