System for acquiring and recording signals delivered by a set of

Details System for acquiring and recording signals delivered by a set of System for acquiring and recording signals delivered by a set of

1988-05-31

1990-02-13

Moskowitz, Nelson

Communications, electrical: acoustic wave systems and devices

Seismic prospecting

Well logging

367 57, 367 60, 340858, 375 58, G01V 140, G01V 122, B21B 4712

Patent

active

049012894

ABSTRACT:
A system is provided for acquiring and recording signals delivered by a set of sensors disposed in one or more probes lowered into a well at the end of a multi-function cable.
The different signals to be transmitted are multiplexed before being applied to an acquisition chain adapted for amplifying them, digitizing them and coding them before applying them to a transmission channel in the form of blocks of digitized words. The multiplexing means may comprise several multiplexing units. The sampling frequency of each signal and the formation of the blocks of words are adapted to the number of units effectively used. In the surface installation, the blocks of words are dissociated and stored in a memory in a single mode suitable for all the blocks whatever their formation.

REFERENCES:
patent: 4041443 (1977-08-01), Thigpen
patent: 4122311 (1978-10-01), Klatt et al.
patent: 4285052 (1981-08-01), Bobbitt
patent: 4509170 (1985-04-01), Hollinger et al.
patent: 4808996 (1989-02-01), Zimmer

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