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:
Aug. 09, 2011
Filed:
Mar. 24, 2004
Songming Huang, Hardwick, GB;
Franck Monmont, Caldecote, GB;
Robert Tennent, Lower Cambourne, GB;
Schlumberger Technology Corporation, Ridgefield, CT (US);
Abstract
An acoustic telemetry apparatus and method for communicating encoded digital data from a down-hole location through a borehole to the surface is described including an acoustic channel terminated at a down-hole end by a reflecting terminal (), an acoustic wave generator () located at the surface and providing an acoustic wave carrier signal through said acoustic, channel, a modulator () located down-hole to modulate amplitude and/or phase of said carrier wave in response to an encoded digital signal and one or more sensors () located at the surface adapted to detect amplitude and/or phase related information of acoustic waves traveling within said acoustic channel to determine the encoded digital data.