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:
Apr. 18, 2023
Filed:
Jul. 08, 2021
Yantai Jereh Petroleum Equipment & Technologies Co., Ltd., Shandong, CN;
Haojie Lin, Shandong, CN;
Xin Wang, Shandong, CN;
Haiping Xing, Shandong, CN;
Feng Gao, Shandong, CN;
Shouzhe Li, Shandong, CN;
Kai Wang, Shandong, CN;
Mingxing Li, Shandong, CN;
Abstract
Embodiments of the present disclosure provide a ferromagnetic object detection device and a method for detecting a tubing coupling. The ferromagnetic object detection device includes a support tube, a magnetic field generating device and a magnetic detection device. The support tube includes a space penetrating in a first direction; the magnetic field generating device is located on an outer sidewall of the support tube and configured to generate a magnetic field; the magnetic field detection device includes a first magnetic field detection element, a second magnetic field detection element and a third magnetic field detection element.