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:
Apr. 21, 2009
Filed:
Aug. 02, 2004
Benoit Froelich, Clamart Cedex, FR;
Jean-luc Le Calvez, Clamart Cedex, FR;
Emmanuel Legendre, Clamart Cedex, FR;
Smaine Zeroug, Clamart Cedex, FR;
Benoit Froelich, Clamart Cedex, FR;
Jean-Luc Le Calvez, Clamart Cedex, FR;
Emmanuel Legendre, Clamart Cedex, FR;
Smaine Zeroug, Clamart Cedex, FR;
Schlumberger Technology Corporation, Sugar Land, TX (US);
Abstract
A well casing is insonified with a first acoustic wave in a first mode that may be any mode of a set including: extensional mode, thickness mode, flexural mode. A first echo is received at a first acoustic transducer for receiving, a first signal is produced and a first measurement is extracted from the first signal. The casing is then insonified with a second acoustic wave in a second mode that may be any mode of the set of modes but is distinct from the first mode. A second echo is received at a selected second acoustic transducer for receiving and a second signal is produced. A second measurement is extracted from the second signal. The zone behind the casing of the well is evaluated from a combination of the first measurement and the second measurement.