Identification of the channel frequency response using...

Details Identification of the channel frequency response using... Identification of the channel frequency response using...

2005-11-21

2008-11-18

Edwards, Jr., Timothy (Department: 2612)

Communications: electrical

Wellbore telemetering or control

Diagnostic monitoring or detecting operation of...

C340S853700, C367S083000

Reexamination Certificate

active

07453372

ABSTRACT:
The transfer function of the communication channel in a mud pulse telemetry system is determined by sending a known signal through the channel and spectral analysis of the received signal. The known signal may be a chirp signal or a stepped frequency signal. Based on the determined transfer function, operating parameters of the pulser are adjusted.

REFERENCES:
patent: 4314364 (1982-02-01), Bickel
patent: 5055837 (1991-10-01), Abdallah et al.
patent: 5113379 (1992-05-01), Scherbatskoy
patent: 5124953 (1992-06-01), Grosso
patent: 5592438 (1997-01-01), Rorden et al.
patent: 5850369 (1998-12-01), Rorden et al.
patent: 5966169 (1999-10-01), Bullis
patent: 6509866 (2003-01-01), Prince
patent: 6626253 (2003-09-01), Hahn et al.
patent: RE38567 (2004-08-01), Gruenhagen
patent: 6795373 (2004-09-01), Aronstam
patent: 6953434 (2005-10-01), Hao et al.
patent: 6985815 (2006-01-01), Castagna et al.
patent: 2003/0142586 (2003-07-01), Shah et al.
patent: 2003/0151975 (2003-08-01), Zhou et al.
patent: 2005/0022987 (2005-02-01), Green et al.
H.K. Kytomaa et al.,An Acoustic Model of Drilling Fluid Circuits for MWD Communication,SPE28015, XP-002370584, Mar. 1994, pp. 1-22.
J.V. Leggett III et al.,A New Method for Communicating Downhole Sensor Data Within the Annulus of a Production Well,SPE 28522, SPE 69th Annual Technical Conference and Exhibition, New Orleans, LA, Sep. 25-28, 1994, pp. 33-42, 8 Figs.

Affiliated with

Also associated with

Rating

Identification of the channel frequency response using... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Identification of the channel frequency response using..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Identification of the channel frequency response using... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4027230