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The Leading Edge; March 2008; v. 27; no. 3; p. 386-393; DOI: 10.1190/1.2896631
© 2008 Society of Exploration Geophysicists
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A designer attribute for net-sand thickness estimation

Eike Rietsch

Chevron Energy Technology Company, Houston, USA

Corresponding author: erietsch{at}chevron.com

One of the tasks frequently performed in hydrocarbon-reserve calculation is the determination of the net-sand thickness, the total thickness of the sand layers in a package of alternating sands and shales. In a Class-III environment, in particular, such a sand-shale sequence sandwiched between shales can lead to prominent reflections. If the gross-sand thickness (in the following I also use the term "target thickness") is less than the tuning thickness and the wavelet is zero-phase, then the peak amplitude, trough amplitude, or a combination of both are frequently used to estimate the net-sand thickness. Other methods need to be employed if the gross-sand thickness exceeds the tuning thickness.






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Copyright © 2008 by Society of Exploration Geophysicists