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Chapter 11: AVO Anomalies From Clean, Wet Sands

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Published:
January 01, 1993

In this chapter, we describe two cose histories in which AVO anomalies were drilled and found to correspond to thick, porous, clean, wet sands. Modeling confirms that a porous, clean, wet sand can produce an increase in amplitude with offset resembling that produced by gas sands.

Cose history lessons
  • It is important to know the Vp/Vs ratio of the target and surrounding rocks to a reasonable degree of accuracy, as Vp/Vs ratios are a major determiner of AVO response.

  • Clean, porous, wet sands can cause AVO anomalies similar to those caused by gas sands in less porous rocks.

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Contents

Geophysical Developments Series

Amplitude Variation with Offset: Gulf Coast Case Studies

James L. Allen
James L. Allen
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Carolyn P. Peddy
Carolyn P. Peddy
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Society of Exploration Geophysicists
Volume
4
ISBN electronic:
9781560802495
Publication date:
January 01, 1993

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