Skip to Main Content
Book Chapter

Introduction

Published:
January 01, 1990

Abstract

As the search for oil and gas becomes more sophisticated and producing basins and fields become more intensely developed, geoscientists need correspondingly more accurate techniques for stratigraphic analysis. To achieve this accuracy, companies are shooting higher-resolution seismic lines, acquiring3-D seismic surveys over fields, and coring more to quantify reservoir properties. Exploration and production staff, provided with these more accurate but expensive data, often under-utilize the well log. In basins or fields with a sufficient density of well COntrol, the coupling of conventional well logs and cores with the techniques of sequence stratigraphy results in an ultra-high-resolution chronostratigraphic frame work for subsurface correlation. Where integrated with seismic and biostratigraphic data, well-log cross sections, interpreted using sequence and parasequenceconcepts, provide a state-of-the-art framework for analyzing reservoir, source, and seal distribution, whether on a regional or a field-reservoir scale.

Sequence stratigraphy is the study of genetically related facies within a framework of chronostratigraphically significant surfaces. The sequence is the fundamental stratal unit for sequence-stratigraphic analysis. The sequence is defined as a relatively conformable, genetically related succession of strata bounded by unconformities or their correlative conformities (Mitchum, 1977). Sequence boundaries form in response to relative falls in sea level. Parasequencesand parasequence sets are the building blocks of sequences. A parasequence is defined as a relatively conformable, genetically related succession of' Present address; Sangree, Sneider, and Mitchum, Houston, Texas, U.s.A. beds or bed sets bounded by marine-flooding surfaces or their correlative surfaces (Van Wagoner, 1985; Van Wagoner et al., 1988).

A parasequence set is defined as

You do not currently have access to this article.

Figures & Tables

Contents

AAPG Methods in Exploration

Siliciclastic Sequence Stratigraphy in Well Logs, Cores, and Outcrops: Concepts for High-Resolution Correlation of Time and Facies

J. C. Van Wagoner
J. C. Van Wagoner
Search for other works by this author on:
R. M. Mitchum
R. M. Mitchum
Search for other works by this author on:
K. M. Campion
K. M. Campion
Search for other works by this author on:
V. D. Rahmanian
V. D. Rahmanian
Search for other works by this author on:
American Association of Petroleum Geologists
Volume
7
ISBN electronic:
9781629810164
Publication date:
January 01, 1990

GeoRef

References

Related

Citing Books via

Close Modal
This Feature Is Available To Subscribers Only

Sign In or Create an Account

Close Modal
Close Modal