Process for obtaining and processing seismic data measured at an exploratory well
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United States of America Patent
Stats
-
Nov 10, 1987
Grant Date -
N/A
app pub date -
Dec 24, 1984
filing date -
Jan 19, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In a process for obtaining seismic data relating to an exploratory well, a seismic wave transmitter and a seismic wave receiver are provided, one arranged on the surface adjacent the well and the other at a plurality of measurement points down the well, and the output of the receiver is processed in a processing installation. The measurement points are divided into at least two groups, each of which comprises a plurality of measurement points spaced apart in a distance (D.sub.z) which is less than a predetermined limit distance so as to avoid aliasing, and the groups of measurement points are separated from each other by a distance (D) greater than the limit distance. In the processing installation separation of the down-going waves from the up-going waves belonging to the same group is carried out before coherence filtration of the separated waves.
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Cited Art Landscape
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