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:
Feb. 19, 2013
Filed:
Mar. 12, 2007
Macmillan M. Wisler, Kingwood, TX (US);
Larry W. Thompson, Willis, TX (US);
Jian-qun Wu, Kingwood, TX (US);
Michael S. Spencer, Conroe, TX (US);
Macmillan M. Wisler, Kingwood, TX (US);
Larry W. Thompson, Willis, TX (US);
Jian-Qun Wu, Kingwood, TX (US);
Michael S. Spencer, Conroe, TX (US);
Precision Energy Services, Inc., Fort Worth, TX (US);
Abstract
An electromagnetic antenna for Measurement-While-Drilling (MWD) applications is disclosed. The antenna can include several array elements that can act alone or together in various measurement modes. The antenna elements can be disposed in tool body recesses to be protected from damage. The antenna elements can include a ferrite plate crossed or looped by independent current carrying conductors in two or more directions forming a bi-directional or crossed magnetic dipole. Although disclosed as a MWD system conveyed by a drill string, basic concepts of the system are applicable to other types of borehole conveyance.