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Gas, water, and oil production from the Wasatch Formation, Greater Natural Buttes Field, Uinta Basin, Utah

Open-File Report 2009-1049
By:  and 
https://doi.org/10.3133/ofr20091049

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Abstract

Gas, oil, and water production data were compiled from 38 wells with production commencing during the 1980s from the Wasatch Formation in the Greater Natural Buttes field, Uinta Basin, Utah. This study is one of a series of reports examining fluid production from tight gas reservoirs, which are characterized by low permeability, low porosity, and the presence of clay minerals in pore space. The general ranges of production rates after 2 years are 100-1,000 mscf/day for gas, 0.35-3.4 barrel per day for oil, and less than 1 barrel per day for water. The water:gas ratio ranges from 0.1 to10 barrel per million standard cubic feet, indicating that free water is produced along with water dissolved in gas in the reservoir. The oil:gas ratios are typical of a wet gas system. Neither gas nor water rates show dependence upon the number of perforations, although for low gas-flow rates there is some dependence upon the number of sandstone intervals that were perforated. Over a 5-year time span, gas and water may either increase or decrease in a given well, but the changes in production rate do not exhibit any dependence upon well proximity or well location.

Study Area

Publication type Report
Publication Subtype USGS Numbered Series
Title Gas, water, and oil production from the Wasatch Formation, Greater Natural Buttes Field, Uinta Basin, Utah
Series title Open-File Report
Series number 2009-1049
DOI 10.3133/ofr20091049
Edition Version 1.0
Year Published 2009
Language English
Publisher U.S. Geological Survey
Contributing office(s) Central Energy Resources Science Center
Description Report: 19 p.; Plates: 24 x 18 inches; Downloads Directory
Online Only (Y/N) Y
Additional Online Files (Y/N) Y
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