Acoustics – Geophysical or subsurface exploration – Well logging
Patent
1990-04-19
1991-04-09
Jordan, Charles T.
Acoustics
Geophysical or subsurface exploration
Well logging
181105, 367 57, 367 35, 367 86, 175 50, 73152, G01V 140
Patent
active
050056662
ABSTRACT:
An apparatus is disclosed for use within a borehole for seismic surveying that has a vertical array of seismic receivers connected to a cable, a top inflatable bladder connected to the cable above the top seismic receiver, and a bottom inflatable bladder connected to the cable below the bottom seismic receiver. The top bladder acoustically isolates all seismic receivers from the borehole environment above the top bladder. The bottom bladder acoustically isolates all seismic receivers from the borehole environment below the bottom bladder. Additional inflatable bladders are placed between each separate seismic receiver in the array.
REFERENCES:
patent: 2191119 (1990-02-01), Schlumberger et al.
patent: 2350371 (1944-06-01), Smith
patent: 3054471 (1962-09-01), Knudsen
patent: 3982606 (1976-09-01), Berry et al.
patent: 4353122 (1982-10-01), Cubberly, Jr.
W. B. Beydoun, et al, "Detection of Open Fractures with Vertical Seismic Profiling", Journal of Geophysical Research, vol. 90, No. B6, May 10, 1985, pp. 4557-4566.
Chevron Research and Technology Company
Eldred J. Woodrow
Jordan Charles T.
Keeling Edward J.
Schaal Ernest A.
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