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:
Oct. 28, 2025
Filed:
Jul. 29, 2021
Schlumberger Technology Corporation, Sugar Land, TX (US);
Terizhandur S. Ramakrishnan, Boxborough, MA (US);
Hua Zhang, Cambridge, MA (US);
Schlumberger Technology Corporation, Sugar Land, TX (US);
Abstract
A method can include receiving pressure data with respect to time acquired via a pressure sensor disposed in an uphole region of a bore of a well, where a plug is disposed in the bore to define the uphole region to one side of the plug and a corresponding downhole region to the other side of the plug; using at least physical properties of liquid in the uphole region and thermal information, computing a temperature and gravitational head induced density variation of the liquid in the uphole region; and, based at least in part on at least a portion of the pressure data and the temperature and gravitational head induced density variation of the liquid, determining a state of the plug and the bore from a plurality of states.