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:
Jun. 16, 2026
Filed:
Aug. 21, 2025
Applicant:
Halliburton Energy Services, Inc., Houston, TX (US);
Inventors:
Jonathon Franklin Neal, Carrollton, TX (US);
Gary J. Geoffroy, Carrollton, TX (US);
Ping Chew Chay, Negara Brunei, BN;
Assignee:
Halliburton Energy Services, Inc., Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 43/04 (2006.01); E21B 34/06 (2006.01); E21B 34/10 (2006.01); E21B 34/14 (2006.01); E21B 37/00 (2006.01);
U.S. Cl.
CPC ...
E21B 43/045 (2013.01); E21B 34/10 (2013.01); E21B 34/142 (2020.05); E21B 37/00 (2013.01); E21B 34/063 (2013.01);
Abstract
An apparatus comprises a service tool configured to be deployed in a wellbore as part of a managed pressure drilling operation of the wellbore, wherein an annulus is defined between a wall of the wellbore and a work string that includes the service tool, a drill pipe, and a lower completion, the service tool comprising, a crossover port; and a valve configured to maintain a back side pressure in the annulus without pressurizing the work string.