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:
Oct. 08, 2013
Filed:
Sep. 29, 2010
Paul A. Johnson, Santa Fe, NM (US);
James A. Tencate, Los Alamos, NM (US);
Pierre-yves Le Bas, Los Alamos, NM (US);
Robert Guyer, Reno, NV (US);
Cung Khac VU, Houston, TX (US);
Christopher Skelt, Houston, TX (US);
Paul A. Johnson, Santa Fe, NM (US);
James A. Tencate, Los Alamos, NM (US);
Pierre-Yves Le Bas, Los Alamos, NM (US);
Robert Guyer, Reno, NV (US);
Cung Khac Vu, Houston, TX (US);
Christopher Skelt, Houston, TX (US);
Chevron U.S.A. Inc., San Ramon, CA (US);
Abstract
In some aspects of the disclosure, a method and an apparatus is disclosed for investigating material surrounding the borehole. The method includes generating within a borehole an intermittent low frequency vibration that propagates as a tube wave longitudinally to the borehole and induces a nonlinear response in one or more features in the material that are substantially perpendicular to a longitudinal axis of the borehole; generating within the borehole a sequence of high frequency pulses directed such that they travel longitudinally to the borehole within the surrounding material; and receiving, at one or more receivers positionable in the borehole, a signal that includes components from the low frequency vibration and the sequence of high frequency pulses during intermittent generation of the low frequency vibration, to investigate the material surrounding the borehole.