Diagonal gather trace interpolation

Details Diagonal gather trace interpolation Diagonal gather trace interpolation

2007-01-17

2009-06-16

Lobo, Ian J (Department: 3662)

Communications, electrical: acoustic wave systems and devices

Seismic prospecting

Land-reflection type

C702S016000, C367S063000

Reexamination Certificate

active

07548487

ABSTRACT:
Diagonal gather trace interpolation systems and methods are disclosed. In some embodiments, the method includes obtaining seismic traces from a marine seismic survey performed using typically two seismic sources fired in a flip-flop pattern. The seismic traces are processed in common field file trace groups from each cable by performing trace interpolation in opposing diagonal directions. Among other things, diagonal trace interpolation may improve azimuthal regularization. In any event, the disclosed interpolation methods maintain spatial bandwidth increased spatial resolution with increased inline and crossline sampling components. Diagonal gather trace interpolation exploits reduced input trace separation to provide improved stability and detection of a greater range of formation dip angles. After interpolation and regularization, the seismic traces may be imaged and interpreted for improved seismic exploration and monitoring.

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Drecun, et al., “Three-Dimensional Interpolation of Traces with Constant Source-to Receiver Offset Distances”, SEG Expanded Abstracts, vol. 5, pp. 363-366.
Stephen Jennings, United Kingdom Patent Office Search Report, dated May 8, 2008.

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