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. 10, 2004
Filed:
Mar. 29, 2002
Dean M. Homan, Sugar Land, TX (US);
Gary A. Hazen, Houston, TX (US);
Richard A. Rosthal, Houston, TX (US);
David L. Smith, Stafford, TX (US);
Thomas D. Barber, Houston, TX (US);
Paul Michael Ray, Missouri City, TX (US);
Jacques R. Tabanou, Houston, TX (US);
Schlumberger Technology Corporation, Sugar Land, TX (US);
Abstract
The invention refers to antenna configurations for electromagnetic logging tools. The antennas have one or more electrical conductors disposed on a dielectric substrate wrapped around a core or disposed directly on the core. The conductor or conductors are arranged such that the antenna has a first magnetic dipole moment substantially perpendicular to a longitudinal axis of the core. The invention also refers to antennas adapted for mutual balancing using interleaved conductive paths or disks to alter the magnetic dipole moments to mutually balance the antenna system.