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. 27, 2021
Filed:
Nov. 20, 2019
Halliburton Energy Services, Inc., Houston, TX (US);
Lonnie Carl Helms, Humble, TX (US);
Min Mark Yuan, Katy, TX (US);
Mayur Narain Ahuja, Friendswood, TX (US);
Ishwar Dilip Patil, Spring, TX (US);
Byong Jun Kim, Cypress, TX (US);
Rajesh Parameshwaraiah, Houston, TX (US);
Halliburton Energy Services, Inc., Houston, TX (US);
Abstract
A downhole apparatus comprises a casing string with a removable plug therein to block flow therethrough. A flow barrier is positioned in the casing below the removable plug and the removable plug and the flow barrier defining a buoyancy chamber therebetween. A debris barrier positioned above the removable plug comprises a rigid annular ring with a flexible diaphragm covering the center opening defined by the annular ring.