Method for positioning seismic sources to flatten CDP fold in VS

Details Method for positioning seismic sources to flatten CDP fold in VS Method for positioning seismic sources to flatten CDP fold in VS

1991-08-05

1992-05-05

Lobo, Ian J.

Communications, electrical: acoustic wave systems and devices

Seismic prospecting

Land-reflection type

367 56, 367 58, G01J 136

Patent

active

051114372

ABSTRACT:
Method and system for creating a vertical seismic profile (VSP) whereby the spacing interval between units, either seismic sources or receivers, in a borehole increase exponentially as their distance from the surface increases, and the spacing interval between units, either seismic sources or receivers, along the surface of the earth decreases exponentially as their distance from the surface intercept of the wellbore increases. In a preferred embodiment of this invention, the common depth point (CDP) fold of the data gathered is substantially flattened across the reflectors surveyed.

REFERENCES:
patent: 4203161 (1980-05-01), Johnson et al.
patent: 4209854 (1980-06-01), Ruehle
patent: 4241429 (1980-12-01), Bloomquist et al.
patent: 4365322 (1982-12-01), Widrow
patent: 4476551 (1984-10-01), Ruehle

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