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:
Aug. 31, 2021
Filed:
Aug. 27, 2019
Applicant:
Halliburton Energy Services, Inc., Houston, TX (US);
Inventors:
Min Mark Yuan, Katy, TX (US);
Lonnie Carl Helms, Humble, TX (US);
Mayur Narain Ahuja, Friendswood, TX (US);
Ishwar Dilip Patil, Spring, TX (US);
Rajesh Parameshwaraiah, Houston, TX (US);
Assignee:
Halliburton Energy Services, Inc., Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 29/02 (2006.01); E21B 23/04 (2006.01); E21B 34/06 (2006.01); E21B 23/06 (2006.01); E21B 33/134 (2006.01); E21B 33/12 (2006.01);
U.S. Cl.
CPC ...
E21B 23/04 (2013.01); E21B 23/065 (2013.01); E21B 34/063 (2013.01); E21B 33/12 (2013.01); E21B 33/134 (2013.01);
Abstract
A downhole apparatus comprises a casing string with a fluid barrier connected in the casing string. A degradable plug is positioned in the casing string above the fluid barrier. The degradable plug and fluid barrier define upper and lower ends of a buoyancy chamber in the casing string. The degradable plug may be degraded to leave an open bore through the casing string after the casing string is lowered into a wellbore.