It has come to the attention of the scientific community in general and the
Stanford Exploration Project in specific, that the current state of knowledge
in several aspects of the reflection seismic experiment are not well
understood and poorly constrained in the area of P-wave transmission physics.
  The lack of a detailed understanding of this subject has been demonstrated
by subtle deviations from hyperbolic move-out, wavelet transformation,
amplitude banding as a function of position along section, and non-uniform
amplitude variation with offset.  Multiple examples of these effects, that
we believe are related to 'transmission irregularities,' have been shown having
characteristics of:
		reproducibility,
		systematic sinusoidal character,
		presence in VSP and reflection data, and
		association with shallow/mid-section velocity anomalies.

Therefore, it is the hope of the Stanford Exploration Project (SEP) that
Shell E&P would be able to provide a data set suitable to probing these
phenomena.  To address this problem, we believe such a data set would include
(in order of importance):
		long-cable 2D seismic,
		VSP,
		high-resolution (2 or 3D) seismic,
		well logs and petrophysics, and
		3D seismic data.
		
The Stanford Exploration Project would greatly enjoy the opportunity to
work with this data, and feel it would be mutually beneficial to Shell E&P and
the SEP consortium.