A model for slug tests conducted in vertically fractured media.

Often slug tests are performed instead of a constant rate test, because:

Several methods are available to interpret slug tests; however, when applied to the same test data, they usually yield very different results.

Numerous slug tests were performed in a large tank containing a confined aquifer.

The velocity graphs of the slug tests provided straight lines instead of the smooth curves as predicted by the theory.

However, smooth curves are exceptions in practice, thereby leading to a reexamination of the influence of S during a slug test.

Easily switch between analysis methods (10 pumping test solutions and 2 slug test solutions).

Key words: slug test, hydraulic conductivity, storativity, numerical modeling.

This paper defines a unified interpretation for slug tests: it is based on the velocity graph describing the conservation equation underlying all methods.

When the water table is shallow, the augerhole method, a slug test, can be used for determining the hydraulic conductivity below the water table.

Hydrological field work with pump tests, slug tests, packer tests and geophysical tests.

These methods include slug tests, pumping tests, response of the aquitard to mechanical loading, and analysis of natural pore pressure fluctuations.

Measurements of hydraulic conductivity of low permeability aquitards overlying the paleochannels has been completed using slug tests.

Well hydraulics, practical interpretation of well pumping tests and slug test data, falling head tests, packer tests.

However, reports of premature detonation continued until the development of bore slug test gauges to ensure that the rocket did not catch inside the launch tube.

Complications arise from near-well effects (i.e., well skin and wellbore storage), which may make it difficult to get accurate results from slug test interpretation.

Other tests were used to determine independently the transmissivity T and S values of the confined aquifer which are compared with those obtained from slug tests.

• Slug tests can be used in the complete well to determine the permeability of the aquifer in the immediate vicinity of the well screen.

Hydraulic conductivities of the aquifer will be determined by a pumping and recovery test, by slug tests, and by a tidal analysis.

Improving the Quality of Parameter Estimates Obtained from Slug Tests by Butler et al.

A slug test involves the insertion or removal of a known volume of water or the displacement of water by a solid object.

A slug test is a variation on the typical aquifer test where an instantaneous change (increase or decrease) is made, and the effects are observed in the same well.

This means that a superposition (or more precisely a convolution) of an infinite number of sequential slug tests through time would effectively be a "standard" Theis aquifer test.

Recent work focuses upon determining the sampling volume of the conventional slug test, and the worth of slug test, pump test and geophysical data.

Aquifer Well Test is the only pumping test and slug test analysis software package available to combine an easy-to-use interface with report quality graphical output of data and results.