Communications – electrical: acoustic wave systems and devices – Seismic prospecting – Well logging
Patent
1984-10-09
1988-04-26
Moskowitz, Nelson
Communications, electrical: acoustic wave systems and devices
Seismic prospecting
Well logging
367 59, 367 46, 364422, G01N 132, G01N 500
Patent
active
047409282
ABSTRACT:
A sonic well logging system and apparatus for determination of seismic wave velocities from a seismic wave propagating in a subterranean formation about a wellbore. The system includes the process of imparting a seismic wave into the subterranean formation about the wellbore, and receiving the seismic wave after it has interacted with the subterranean formation at a plurality of seismic receivers positioned in the wellbore. The seismic waves are transformed at each of the seismic receivers into a seismic signal and these signals nonlinearly stacked for a selected position in the wellbore to generate a velocity spectrum of seismic wave velocities. Coherency peaks are then selected from the velocity spectrum with each coherency peak having associated therewith a unique seismic wave velocity, such as P-wave, S-wave, tube wave and the like.
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Gutowski Paul R.
Smith, Jr. Martin L.
Sondergeld Carl H.
Amoco Corporation
Brown Scott H.
Hook Fred E.
Moskowitz Nelson
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