1887

Abstract

2-D interval velocity analysis is inaccurate in the case of tree-dimensional structures. This is demonstrated on the isotropic two-Iayered model where two reflecting interfaces have conflicted dip azimuths (Figure 1). We consider the profile Y=5km. The stacked section (Figure 2) is obtained from CMP gathers calculated by 3-D ray tracing. Interval velocity analysis along this profile is carried out by the 2-D coherency inversion (Landa et al.,1989). This analysis provides a high coherency (normalized semblance is about 0.8) for both reflection horizons on the CMP gathers.

Loading

Article metrics loading...

/content/papers/10.3997/2214-4609.201410758
1991-05-28
2020-11-27
Loading full text...

Full text loading...

http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.201410758
Loading
This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error