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. 24, 2023
Filed:
Nov. 04, 2021
Saudi Arabian Oil Company, Dhahran, SA;
Hemant Kumar Sharma, Udhailiyah, SA;
Abdulrahman K. Mulhim, Udhailiyah, SA;
Saudi Arabian Oil Company, Dhahran, SA;
Abstract
A method for determining a cathodic current (such as from a cathodic protection system) in a tubular disposed within a wellbore drilled in a subterranean zone. A electromagnetic tool disposed within the tubular includes an electromagnetic transmitter, an electromagnetic receiver, a helical transmitter coil, and a helical receiver coil. An axis of the helical transmitter coil and an axis of the helical receiver coil are substantially parallel to an axis of the tubular. An electromagnetic field is transmitted by flowing a first electrical current to the helical transmitter coil. During the transmitting, an electromagnetic signal is received by the electromagnetic receiver via the helical receiver coil. A second electrical current is calculated based on the electromagnetic signal received by the electromagnetic receiver. A magnitude of the cathodic current flowing through the tubular is calculated based on a difference between the first electrical current and the second electrical current.