Basin-centered gas systems of the U.S.

Marin A. Popov; Vito F. Nuccio; Thaddeus S. Dyman; Timothy A. Gognat; Ronald C. Johnson; James W. Schmoker; Michael S. Wilson; Charles E. Bartberger

doi:10.3133/ofr2001135

Basin-centered gas systems of the U.S.

Open-File Report 2001-135

By: Marin A. Popov, Vito F. Nuccio, Thaddeus S. Dyman, Timothy A. Gognat, Ronald C. Johnson, James W. Schmoker, Michael S. Wilson, and Charles E. Bartberger

https://doi.org/10.3133/ofr2001135

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Abstract

Basin-center accumulations, a type of continuous accumulation, have spatial dimensions equal to or exceeding those of conventional oil and gas accumulations, but unlike conventional fields, cannot be represented in terms of discrete, countable units delineated by downdip hydrocarbon-water contacts. Common geologic and production characteristics of continuous accumulations include their occurrence downdip from water-saturated rocks, lack of traditional trap or seal, relatively low matrix permeability, abnormal pressures (high or low), local interbedded source rocks, large in-place hydrocarbon volumes, and low recovery factors. The U.S. Geological Survey, in cooperation with the U.S. Department of Energy, National Energy Technology Laboratory, Morgantown, West Virginia, is currently re-evaluating the resource potential of basin-center gas accumulations in the U.S. in light of changing geologic perceptions about these accumulations (such as the role of subtle structures to produce sweet spots), and the availability of new data. Better geologic understanding of basin-center gas accumulations could result in new plays or revised plays relative to those of the U.S. Geological Survey 1995 National Assessment (Gautier and others, 1995). For this study, 33 potential basin-center gas accumulations throughout the U.S. were identified and characterized based on data from the published literature and from well and reservoir databases (Figure 1). However, well-known or established basin-center accumulations such as the Green River Basin, the Uinta Basin, and the Piceance Basin are not addressed in this study.

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Additional publication details
Publication type	Report
Publication Subtype	USGS Numbered Series
Title	Basin-centered gas systems of the U.S.
Series title	Open-File Report
Series number	2001-135
DOI	10.3133/ofr2001135
Year Published	2001
Language	English
Publisher	U.S. Geological Survey
Contributing office(s)	Central Energy Resources Science Center
Description	506 p.
Time Range Start	1998-04-01
Time Range End	2000-11-30
Country	United States
Google Analytic Metrics	Metrics page