Process for obtaining and processing seismic data measured at an

Details Process for obtaining and processing seismic data measured at an Process for obtaining and processing seismic data measured at an

1984-12-24

1987-11-10

Tarcza, Thomas H.

Communications, electrical: acoustic wave systems and devices

Seismic prospecting

Land-reflection type

367 43, G01V 100

Patent

active

047062258

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.

REFERENCES:
patent: 3371310 (1968-02-01), Silverman
patent: 3652980 (1972-03-01), Goupillaud

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