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. 01, 2018
Filed:
Dec. 16, 2013
Halliburton Energy Services, Inc., Houston, TX (US);
Owen Ransom Clark, Dallas, TX (US);
Joseph Michael Karigan, Carrollton, TX (US);
HALLIBURTON ENERGY SERVICES, INC., Houston, TX (US);
Abstract
A wellhead stack assembly is provided that includes pressure restriction devices. The pressure restriction devices are staged such that each pressure restriction device is coupled to another pressure restriction device for cascading pressure differentials across the pressure restriction devices. Each pressure restriction device includes an active element positionable about a drill pipe for controlling a gap between the drill pipe and the active element.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile