Dougherty-Babu Slug Test Solution for Confined Aquifers

Advanced Software for Pumping Tests/Slug Tests/Constant-Head Tests	Official Developer Web Site by HydroSOLVE, Inc.
Dougherty-Babu
The World's LEADING Aquifer Test Analysis Software Since 1989! Celebrating 20 Years!

Quick Links

Import Wizard

Pumping Tests

Step Tests

Slug Tests

Constant-Head Tests

Join Users' Group

Brochure (pdf)

Recommended Book:

Butler (1998)

Dougherty-Babu Slug Test Solution for Confined Aquifers

Description

A mathematical solution by Dougherty and Babu (1984) is useful for determining the hydraulic properties (transmissivity, storage coefficient and hydraulic conductivity anisotropy ratio) of confined aquifers. Analysis involves matching a type curve solution to water-level displacement data collected during a slug test. The solution also includes wellbore skin.

AQTESOLV for Windows provides visual and automatic methods for matching the Dougherty-Babu solution to slug test data. This easy-to-use and intuitive software promotes rapid and accurate determination of aquifer properties.

Assumptions

The following assumptions apply to the use of the Dougherty-Babu solution:

	aquifer has infinite areal extent
	aquifer is homogeneous and of uniform thickness
	aquifer potentiometric surface is initially horizontal
	wells are fully or partially penetrating
	a volume of water, V, is injected or discharged from the well instantaneously
	flow to test well is horizontal
	aquifer is confined
	flow is unsteady
	water is released instantaneously from storage with decline of hydraulic head

Solution Options

AQTESOLV for Windows provides the following options for the Dougherty-Babu solution:

	partially penetrating wells
	hydraulic conductivity anisotropy
	wellbore skin effect
	observation wells

References

Dougherty, D.E and D.K. Babu, 1984. Flow to a partially penetrating well in a double-porosity reservoir, Water Resources Research, vol. 20, no. 8, pp. 1116-1122.