Reservoir geophysics exercises

From SEG Wiki
Jump to navigation Jump to search
Seismic Data Analysis
Series Investigations in Geophysics
Author Öz Yilmaz
ISBN ISBN 978-1-56080-094-1
Store SEG Online Store

Exercise 11-1. Derive equation (2a) for the Fresnel zone using the geometry of Figure 11.1-3.

Exercise 11-2. Refer to Figure 11.4-1a. Consider a surface multiple from the first reflecting interface. Trace the traveltime on the VSP diagram in Figure 11.4-1b. Multiples do not reach the downgoing wave path; thus, they can be eliminated by corridor stacking.

Exercise 11-3. Refer to Figure 11.4-1b. Should the slopes of the downgoing and upcoming waves associated with a layer be the same in magnitude?

Exercise 11-4. What procedure does CMP stacking correspond to in the f − k domain?

Exercise 11-5. Sketch the traveltime response for a point scatterer on a zero-offset VSP record.

Exercise 11-6. Consider a CMP gather with a single reflection event. Suppose you have applied hyperbolic moveout correction using equation (90) and discovered that the event is not flat for all offsets. Instead, the moveout-corrected event may have one of the three shapes shown in Figure 11.E-1. Match each of the curves A, B, and C with the following three possibilities:

  1. You have applied hyperbolic moveout correction using an erroneously low velocity in equation (90).
  2. You have applied a second-order moveout correction (equation 3-4b) to an event that has a fourth-order moveout behavior described by equation (3-5a).
  3. You have ignored anisotropy in moveout correction described by equation (92).

Figures and equations




See also

External links

find literature about
Reservoir geophysics exercises
SEG button search.png Datapages button.png GeoScienceWorld button.png OnePetro button.png Schlumberger button.png Google button.png AGI button.png