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Book Chapter

Shaly Sand Analysis Case Studies

Published:
January 01, 1990

Abstract

Five different case studies help us resolve the quation posed earlier in the text, namely, if shale or clay is present in a reservoir, how do we correct log data to find tire critical parameters of effective water saturation and effective porosity?

The case studies come from the San Juan basin, New Mexico; Midland basin, Texas; Anadarko basin, Oklahonra, western Kansas; and the Gulf of Mexico, and represent Mississippian, Fennsylvanian, Fermian, Cretaceous and Tertiary ages.

In all of the cases, we base our assessment strategies on an unknown shale or clay distilbution. Every example begins with a conventional, uncorrected log analysis; this provides some startling comparisons of different reservoir parameters, and vividly illustrates how easy it is to make costly mistakes if the time isn't taken to do shaly sand analysis in a reservoir.

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Contents

AAPG Continuing Education Course Notes Series

Log Evaluation of Shaly Sandstones: A Practical Guide

George B. Asquith
George B. Asquith
Texas Tech university
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American Association of Petroleum Geologists
Volume
31
ISBN electronic:
9781629811215
Publication date:
January 01, 1990

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