Ozkan-Raghavan Solution for Constant-Head Test in Fractured Aquifers

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Ozkan-Raghavan Solution for Constant-Head Tests in Fractured Aquifers

Description

A mathematical solution by Ozkan-Raghavan (1991) is useful for determining the hydraulic properties (hydraulic conductivity, specific storage, hydraulic conductivity anisotropy and fracture length) of fractured aquifers with a single vertical fracture intersecting the test well. Analysis involves matching the Ozkan-Raghavan solution to discharge data collected during a constant-head test.

AQTESOLV for Windows provides visual and automatic methods for matching the Ozkan-Raghavan solution to constant-head 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 Ozkan-Raghavan solution:

	aquifer has infinite areal extent
	aquifer has uniform thickness
	aquifer potentiometric surface is initially horizontal
	fractured aquifer represented by anisotropic system with a single plane vertical fracture that fully penetrates aquifer
	flow is unsteady
	water is released instantaneously from storage with decline of hydraulic head
	diameter of pumping well is very small so that storage in the well can be neglected

Solution Options

AQTESOLV for Windows provides the following options for the Ozkan-Raghavan solution:

recovery

References

Ozkan, E. and R. Raghavan, 1991. New solutions for well-test analysis problems: Part I-analytical considerations, SPE Formation Evaluation, Sept. 1991, pp. 359-368.