Data processing: measuring – calibrating – or testing – Measurement system in a specific environment – Earth science
Reexamination Certificate
2007-01-30
2007-01-30
Nghiem, Michael (Department: 2863)
Data processing: measuring, calibrating, or testing
Measurement system in a specific environment
Earth science
C166S250100
Reexamination Certificate
active
10692775
ABSTRACT:
The present invention provides for an apparatus and method of use to control a downhole tool remotely based on the autocorrelation of command sequences. Repeating signals of a priori unknown or undefined shape can be correlated to themselves to reliably distinguish intentional changes from random fluctuations or other operations performed on the well. Using autocorrelation, any fluctuation of pressure of sufficient amplitude can be used to send commands by controlling the timing or the number of repetitions of the sequence.
REFERENCES:
patent: 3914732 (1975-10-01), Brumleve et al.
patent: 4051901 (1977-10-01), Sarem et al.
patent: 4147222 (1979-04-01), Patten et al.
patent: 4166979 (1979-09-01), Waggener
patent: 4231112 (1980-10-01), Massa
patent: 4282588 (1981-08-01), Chanson et al.
patent: 4297879 (1981-11-01), Howells et al.
patent: 4346593 (1982-08-01), Howells et al.
patent: 4554975 (1985-11-01), Vann et al.
patent: 4782910 (1988-11-01), Sims
patent: 4839644 (1989-06-01), Safinya et al.
patent: 4866680 (1989-09-01), Scherbatskoy
patent: 4951907 (1990-08-01), Gold
patent: 4971160 (1990-11-01), Upchurch
patent: 5050675 (1991-09-01), Upchurch
patent: 5113379 (1992-05-01), Scherbatskoy
patent: 5150333 (1992-09-01), Scherbatskoy
patent: 5182730 (1993-01-01), Scherbatskoy
patent: 5592438 (1997-01-01), Rorden et al.
patent: 5963138 (1999-10-01), Gruenhagen
patent: 6308137 (2001-10-01), Underhill et al.
patent: 6584406 (2003-06-01), Harmon et al.
patent: 6626253 (2003-09-01), Hahn et al.
patent: 6885918 (2005-04-01), Harmon et al.
patent: 2004/0006430 (2004-01-01), Harmon et al.
patent: 2005/0090985 (2005-04-01), Goodman
patent: 971109 (1964-09-01), None
patent: 2288834 (1995-11-01), None
patent: 2 373 804 (2002-10-01), None
patent: 0552833 (1993-07-01), None
patent: WO 97/14869 (1997-04-01), None
Castano Jaime A.
Galloway Bryan P.
Schlumberger Technology Corporation
Taylor Victor J.
Trop Pruner & Hu P.C.
LandOfFree
Downhole tool controller using autocorrelation of command... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Downhole tool controller using autocorrelation of command..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Downhole tool controller using autocorrelation of command... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3812201