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Applied Subsurface Geological Mapping by Daniel J.Tearpock, Richard E. Bischke

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Chapter 4. Log Correlation Techniques

Introduction

Correlation can be defined as the determination of structural or stratigraphic units that are equivalent in time, age, or stratigraphic position. For the purpose of preparing subsurface interpretations, including maps and cross sections, the two general sources of correlation data are electric wireline logs and seismic sections. In this chapter, we discuss basic procedures for correlating well logs, introduce plans for performing various phases of well log correlation, and present fundamental concepts and techniques for correlating well logs from vertical as well as directionally drilled wells.

Fundamentally, electric well log curves are used to delineate the boundaries of subsurface units for the ...

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