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.

Date of Patent:
May. 14, 2024

Filed:

Jan. 26, 2022
Applicant:

Saudi Arabian Oil Company, Dhahran, SA;

Inventors:
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 47/047 (2012.01); E21B 21/08 (2006.01); E21B 47/12 (2012.01); G01F 23/30 (2006.01); G01F 23/60 (2006.01);
U.S. Cl.
CPC ...
E21B 47/047 (2020.05); E21B 21/08 (2013.01); E21B 47/12 (2013.01); G01F 23/30 (2013.01); G01F 23/606 (2013.01);
Abstract

A system for monitoring an annular fluid level may include a floating element disposed on a surface of a drilling fluid within an annulus of the well, during mud cap drilling operations. The system may also include an antenna disposed above the floating element. The antenna may be configured to transmit a first signal to the floating element, and to receive a second signal from the floating element in response to the first signal. The system may also include a processor configured to determine a time value that measures a time between a transmittal, by the antenna, of the first signal and a receipt, by the antenna, of the second signal. The processor may also determine a state of a drilling fluid level within the annulus based on the time value, and update a drilling program for the well based on the state of the drilling fluid level.


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