Skip to Main Content
Book Chapter

The Computer-Aided Geological Characterization of a Sandstone Reservoir, North Ward Estes Field, Ward and Winkler Counties, Texas

By
Albert S. Wylie, Jr.
Albert S. Wylie, Jr.
Search for other works by this author on:
E. K. Davidsen
E. K. Davidsen
Search for other works by this author on:
J. D. Gillespie
J. D. Gillespie
Search for other works by this author on:
R. S. Butler
R. S. Butler
Search for other works by this author on:
R. G. Stanley
R. G. Stanley
Search for other works by this author on:
J. H. Beck
J. H. Beck
Search for other works by this author on:
Published:
January 01, 1991

Abstract

The North Ward Estes Field is located along the western edge of the Central Basin Platform in Ward and Winkler Counties, Texas. The field is part of an Upper Guadalupian productive trend that extends uninterrupted for 90 miles on the edge of the platform. The North Ward Estes Field has produced over 388 MMBO (one-third of the trend's cumulative production) from more than 3300 wells since its discovery in 1929. Production in the field is from back-reef lagoonal sandstones of the Yates, Seven Rivers and Queen Formations.

A correlation scheme was developed for the field based on laterally continuous key dolomites that bracket the productive sands and segment the reservoir into discrete mappable units. Applying this scheme, more than 68,000 correlation markers were selected and loaded into a computer database. Concurrently, 15 million curve feet of log data, 30,000 feet of core analysis data, and 125,000 feet of core lithology data were digitized. Core analyses and lithologies were depth-corrected. Logs were normalized using a 60-foot interval of laterally continuous anhydride dolomite. Core porosity data were cross-plotted verses bulk density log values to develop equations (transforms) for derivation of porosity. Corrections for hole rugosity, overburden pressure, and lithologic complications were applied to refine the porosity transform. Structure and porosity-feet maps were then merged with fluid contact and water saturation data to calculate volumetries. Facies and permeability relationships and actual to apparent pay ratios were applied to determine effective hydrocarbon pore volume.

Computer generated net isopach maps of the sands display a north-south

You do not currently have access to this article.

Figures & Tables

Contents

AAPG Special Publication

The Integration of Geology, Geophysics, Petrophysics and Petroleum Engineering in Reservoir Delineation, Description and Management

Robert Sneider
Robert Sneider
Search for other works by this author on:
Wulf Massell
Wulf Massell
Search for other works by this author on:
Rob Mathis
Rob Mathis
Search for other works by this author on:
Dennis Loren
Dennis Loren
Search for other works by this author on:
Paul Wichmann
Paul Wichmann
Search for other works by this author on:
American Association of Petroleum Geologists
ISBN electronic:
9781629811192
Publication date:
January 01, 1991

GeoRef

References

Related

Citing Books via

A comprehensive resource of eBooks for researchers in the Earth Sciences

Close Modal
This Feature Is Available To Subscribers Only

Sign In or Create an Account

Close Modal
Close Modal