Acoustics – Geophysical or subsurface exploration – Seismic source and detector
Patent
1992-04-14
1993-07-27
Eldred, J. Woodrow
Acoustics
Geophysical or subsurface exploration
Seismic source and detector
367 56, 367177, 367178, 367 37, G01V 100
Patent
active
052312518
ABSTRACT:
The invention comprises a seismic recording apparatus and method. A multichannel recorder is connected to a cable formed from a plurality of signal conductors. Each of the signal conductors is connected to a different channel of the recorder via a multiplexer. The cable has a plurality of takeouts located at spaced distances along its length. Each of the takeouts is connected to a different signal conductor of the cable. A switch means is operably connected to one of the takeouts for selectively interconnecting the takeout and any one or more of several seismic detector connections upon receipt of a remotely generated signal. The invention also includes a number of detector conduits, each of which has one end operably connected to a different one of the seismic detector connections of the switch means. Each detector conduit has at least one geophone located along its length and operably connected thereto. A control means is provided for transmitting a signal to the switch means. The switch means sequentially interconnects a geophone or group of geophones with the recorder each time the multiplexer samples the takeout associated with that switch means.
REFERENCES:
patent: 4280201 (1981-07-01), Mart et al.
patent: 4285052 (1981-08-01), Bobbitt
patent: 4484314 (1984-11-01), Thigpen
patent: 4958333 (1990-09-01), O'Brien
patent: 5089995 (1992-02-01), Hackett
Encyclopedic Dictionary of Exploration Geophysics by R. E. Sheriff, pub. by The Society of Exploration Geophysicists, 1973, p. 146.
DeLarvin Clark E.
Eldred J. Woodrow
Jacobson William O.
Union Oil Company of California
Wirzbicki Gregory F.
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