AQTESOLV for Windows--Slug Test Analysis Software

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AQTESOLV Home > Features >Slug Tests

Slug Test Solutions

AQTESOLV for Windows is advanced slug test software that combines powerful analysis methods with an easy-to-use interface.

Evaluate slug tests with oscillatory (underdamped) response with the Springer-Gelhar, Butler and Butler-Zhan solutions!

Analyze multi-well slug tests with the KGS Model, Dougherty-Babu, Butler-Zhan and Barker-Black solutions!

Summary of Slug Test Solutions
Solution Category	Methods Available
Slug Tests	18
Partial Penetration	15
Underdamped	5
Confined Aquifers	11
Unconfined Aquifers	6
Fractured Aquifers	1

Slug Test Solutions for Confined Aquifers
Solution Method	STD	PRO
Bouwer-Rice (1976)	x	x
Cooper-Bredehoeft-Papadopulos (1967)	x	x
Dougherty-Babu (1984)		x
Hvorslev (1951)	x	x
Hyder et al. (1994)/KGS Model		x
Butler (1998)		x
Butler-Zhan (2004)		x
Peres et al. (1989) deconvolution		x
McElwee-Zenner (1998) nonlinear slug test		x
Slug Solutions for Unconfined Aquifers
Solution Method	STD	PRO
Bouwer-Rice (1976)	x	x
Hvorslev (1951)	x	x
Dagan (1978)		x
Hyder et al. (1994)/KGS Model		x
Springer-Gelhar (1991)		x
*Slug* Test Solutions for Fractured Aquifers
Solution Method	STD	PRO
Barker-Black (1984) double-porosity slug test		x

AQTESOLV is the leading slug test analysis software package that provides a robust suite of solution methods for the analysis of slug tests in confined and unconfined aquifers. The software includes the advanced KGS Model (including well skin) which allows you to analyze slug test data from the test well and multiple observation wells.

Straight-Line Methods

Straight-line methods such as the Bouwer-Rice (1976), Hvorslev (1951) and Dagan (1978) solutions are simple to perform, but often require discretion on the part of the analyst to interpret the slug test data. The AQTESOLV software facilitates the application of these solution methods through easy-to-use visual and automatic curve matching tools. To assist in the interpretation of the slug test data, the software displays recommended head ranges (Butler 1998) that help to ensure meaningful results. The slug test software also includes corrections for gravel pack porosity and hydraulic conductivity anisotropy.

The Peres et al. (1989) solution is a new method in AQTESOLV for analyzing slug tests with wellbore skin. This method is based on an exact equation for transforming slug test data into equivalent head data for a constant-rate pumping test with wellbore storage and skin effect. Through the use of an approximate deconvolution technique, the method eliminates wellbore storage from the transformed equivalent head data, thereby making it possible to analyze the equivalent heads using the Cooper-Jacob solution for a constant-rate pumping test.

Type Curve Methods

Slug test analysis with type-curve methods such as the Cooper et al. (1967), Hyder et al. (1994), Butler (1998), Springer-Gelhar (1991) and Butler-Zhan (2004) solutions are more involved than straight-line methods, but have fewer limiting assumptions.

The slug test solutions by Butler (1998), Springer-Gelhar (1991) and Butler-Zhan (2004) let you match curves to tests with oscillatory response (underdamped case due to inertial effects in high-K aquifers) with corrections for frictional well loss (Butler 2002).

AQTESOLV provides a suite of tools for visual and automatic curve matching, type curve families, parameter tweaking and sensitivity analysis.

Multi-Well Tests

Slug tests are generally performed as single-well tests. In some cases, however, valuable information may be obtained from multi-well (interference) slug tests consisting of the test well and one or more observation wells. The AQTESOLV software allows you to analyze these tests using the KGS Model (Hyder et al. 1994) for slug tests with and without well skin.

AQTESOLV: Software for Multi-Well Slug Tests

Analysis of Multi-Well Slug Test Using KGS Model

Other methods in AQTESOLV that you may use for the analysis of multiwell slug tests include Dougherty-Babu (1984), Butler-Zhan (2004) and Barker-Black (1983).