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Interpretation of prematurely terminated air-pressurized slug tests

Ground Water

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Abstract

An air-pressurized slug test consists of applying a constant pressure to the column of air in a well, monitoring the declining water level, and then releasing the air pressure and monitoring the recovering water level. Such tests offer a means of estimating formation transmissivity and storativity without extensive downhole equipment and the associated safety risks. This paper analyzes data from prematurely terminated tests. A solution to the boundary-value problem for the declining and recovering water level during an air-pressurized slug test is developed for an arbitrary time-dependent air pressure applied to the well. Type curves are generated to estimate formation transmissivity and storativity from the recovering water level associated with prematurely, terminated tests. The application of the type curves is illustrated in a series of actual tests.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Interpretation of prematurely terminated air-pressurized slug tests
Series title:
Ground Water
Volume
33
Issue:
4
Year Published:
1995
Language:
English
Publisher:
Ground Water Publishing
Publisher location:
Dublin, OH, United States
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Ground Water
First page:
539
Last page:
546
Number of Pages:
8