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Interpretation of oscillatory water levels in observation wells during aquifer tests in fractured rock

Water Resources Research

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Abstract

Oscillatory water levels are predicted by the equations coupling the fluid movement in the observation well and the fluid movement in the surrounding formation. The equivalent-porous medium and dual-porosity models of fractured rock are two models considered in this analysis; however, other conceptual models of fractured media can also be coupled with the model presented here for fluid movement in the observation well. Type curves for the response of water levels in observation wells due to pumping in another well are generated by numerical inversion of the Laplace transform solution to the governing equations. Overdamped conditions, where inertial effects are insignificant, and underdamped conditions, where oscillations arise, are predicted by the solution to the governing equations. By matching water level measurements with the appropriate type curve, a conceptual model of the formation can be identified, and aquifer properties can be estimated. -from Author

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Interpretation of oscillatory water levels in observation wells during aquifer tests in fractured rock
Series title:
Water Resources Research
Volume
25
Issue:
10
Year Published:
1989
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
First page:
2129
Last page:
2137
Number of Pages:
9