Communications – electrical: acoustic wave systems and devices – Seismic prospecting – Well logging
Patent
1983-08-18
1985-06-18
Tubbesing, T. H.
Communications, electrical: acoustic wave systems and devices
Seismic prospecting
Well logging
367 27, 367 28, 367 32, 367 35, 367 86, 181105, G01V 140
Patent
active
045244332
ABSTRACT:
In an acoustic logging system for providing information regarding selected parameters of the wall of a borehole in the earth, and of the rock formation which is adjacent the borehole, in which a single transmit/receive transducer system (T/RTS) mounted on a rotating assembly probes the wall of the borehole in a circular scanning pattern as a function of depth, the improvement which includes at least a second T/RTS mounted on the rotating assembly in known geometrical relation to the first T/RTS, and means to process two or more analog electrical scan signals for transmission over one or more electrical transmission channels in a logging cable. In particular, methods and means are described for transmitting multiple scan signals whereby a higher speed of logging is possible without loss of detail of the logs and without modification of the mechanical system of the logging sonde.
REFERENCES:
patent: 3237153 (1966-02-01), Blizard
patent: 3378097 (1968-04-01), Straus et al.
patent: 3426865 (1969-02-01), Henry
patent: 3959767 (1976-05-01), Smither et al.
patent: 4283953 (1981-08-01), Plona
Kaiser K. R.
Standard Oil Company (Indiana)
Tubbesing T. H.
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