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:
Sep. 21, 2021
Filed:
Jul. 16, 2019
Nabors Drilling Technologies Usa, Inc., Houston, TX (US);
Danny Spencer, Houston, TX (US);
Nabors Drilling Technologies USA, Inc., Houston, TX (US);
Abstract
Systems and methods for conducting subterranean operations and managing a bottom hole pressure (BHP) in a wellbore include receiving a first signal at a controller indicating a drill pipe connection or disconnection is beginning and switching the controller from a first control mode to a second control mode. The bottom hole pressure (BHP) in the wellbore is determined, a BHP set point is determined by the controller, and a first pressure set point is sent to a single set point choke (SSPC). The BHP is maintained by comparing the determined BHP to the BHP set point and adjusting the first pressure set point based on the comparison. The controller receives a second signal after the drill pipe connection or disconnection is complete prompting the controller to switch back to the first control mode.