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. 11, 2012
Filed:
Dec. 08, 2008
Valeriy Richenstev, Houston, TX (US);
Vladimir Dubinsky, Houston, TX (US);
Douglas J. Patterson, Spring, TX (US);
Jonathan F. Hook, Houston, TX (US);
David H. Lilly, Houston, TX (US);
Valeriy Richenstev, Houston, TX (US);
Vladimir Dubinsky, Houston, TX (US);
Douglas J. Patterson, Spring, TX (US);
Jonathan F. Hook, Houston, TX (US);
David H. Lilly, Houston, TX (US);
Baker Hughes Incorporated, Houston, TX (US);
Abstract
An apparatus and method for providing a downhole acoustic source is disclosed. The acoustic source includes a piston configured to oscillate in an axial direction of the acoustic source and produce an acoustic signal in a medium in contact with an exterior surface of the piston, and an elastomer disposed on an interior side of the piston, an acoustic impedance of the elastomer selected to match an acoustic impedance of the piston. A permanent magnet is configured to provide a permanent magnetic field oriented in the axial direction, and a coil disposed on an interior side of the piston produces an alternating magnetic field in the region of the permanent magnetic field. The elastomer may be, for example, a silicon rubber, a silicone jelly, and a silicone oil. A plurality of acoustic sources may be arranged to produce an acoustic dipole configuration or an acoustic quadrupole configuration.