Method for making a 3-D cube of near traces from data acquired i

Details Method for making a 3-D cube of near traces from data acquired i Method for making a 3-D cube of near traces from data acquired i

1996-02-15

1998-07-21

Lobo, Ian J.

Communications, electrical: acoustic wave systems and devices

Seismic prospecting

Land-reflection type

367 20, 367 21, G01V 138, G01V 134

Patent

active

057843350

ABSTRACT:
A method for making a 3-D cube of near traces from data acquired in a marine reflection seismic survey.
A method for making a 3-D cube of near traces using at least one source (S.sub.1, S.sub.2) and a plurality of streamers (4 to 7) spaced from the source, each comprising receivers/recorders (R.sup.1.sub.4, R.sup.1.sub.5, R.sup.1.sub.6, R.sup.1.sub.7) as well as means for the space tracking of each source and each streamer, the image of the subsurface being produced in three dimensions with a system of X, Y, T axes in the form of a 3-D cube by assigning to each bin of a group of bins forming a group with a regular grid in an X,Y plane, a central trace represented at the center of said bin along the time axis (T), said method being characterized in that for each line navigated, said central trace is produced from at least a first recorded trace whose offset is as close as possible to a constant offset equal to the smallest offset common to at least the group of traces of the navigated line.

REFERENCES:
patent: 5487052 (1996-01-01), Cordsen
patent: 5511039 (1996-04-01), Flentge
G.L. Kinsland, et al., "High-Resolution Three-Dimensional Seismic Survey of a Thin Sand at Depth", Geophysics, vol. 56, No. 12, Dec. 1991, pp. 2036-2047.
W.S. French, "Improvements in 3-D Seismic", World Oil, vol. 215, No. 5, May 1994, Houston, Texas, pp. 60-61.
W.R. Cotton, "3D Marine Seismic Survey Quality Control", Oil & Gas Journal, vol. 81, No. 36, Sep. 1983, Tulsa, Oklahoma, pp. 102, 105, 106,113 and 114 .

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