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. 20, 2016
Filed:
May. 16, 2014
Naizhen Liu, Beijing, CN;
Qihui Zhao, Beijing, CN;
Yuzhou LU, Beijing, CN;
Yonghe LI, Panjin, CN;
Rui Bai, Panjin, CN;
Jing LI, Houston, TX (US);
Ce Liu, Houston, TX (US);
Naizhen Liu, Beijing, CN;
Qihui Zhao, Beijing, CN;
Yuzhou Lu, Beijing, CN;
Yonghe Li, Panjin, CN;
Rui Bai, Panjin, CN;
Jing Li, Houston, TX (US);
Ce Liu, Houston, TX (US);
Other;
Abstract
A rotary steerable drilling tool with an electromagnetic steering system can include a drill collar, a bit shaft, an orientation control module, a mud tube, a mud tube coupler, a universal joint, a mud sealing device, and a drill bit. The bit shaft can be mechanically coupled to the drill collar through the universal joint and the orientation control module and rotate about the universal joint. The orientation and the inclination angle of the bit shaft against the drill collar can be controlled by the orientation control module with the electromagnetic steering system. The orientation control module can include a guide track mounted on the inside wall of the drill collar, arrays of electromagnets mounted on the guide track, a positioning frame, a permanent magnet mounted on the positioning frame, a coupling tube, and at least two bearing wheels. A corresponding electromagnetic steering method is also provided.