The Slug Test Method is one of a number of different methods that are used to evaluate the permeability (or hydraulic conductivity) of an aquifer. The procedure involves either adding or removi ng a measured quantity of water from a well rapidly, followed by making a rapid series of water-level measurements to assess the rate of water-level recovery (either rising-head or falling-head).

Slug Length ft = pressure in psi / change in pressure gradient psi-ft Final Stage : Calculate the Slug volume in barrels.

This research presents a hydraulic conductivity (K) analysis of unconfined aquifers using slug tests. Slug tests are used to determine in situ aquifer hydraulic conductivity more quickly and economically than by a pump test. This study examines With the slug test the hydraulic conductivity or trans- missibilitv of an aquifer is determined from the rate of rise of the water level in a well after a certain volume or 'slug. of water is suddenly removed from the well. The slug test is simpler and quicker than the Theis pumping test because observation wells and pumping the well are not 2020-05-22 SlugIn 1.0, a program to Interpret Slug tests, is the answer to the requirement of the Instituto Geológico y Minero de España (IGME) (Spanish Geological Service) for a calculation tool for interpreting permeability tests in boreholes and/or wells Download Limit Exceeded You have exceeded your daily download allowance. This report documents several spreadsheets that have been developed for the analysis of aquifer-pumping test and slug-test data.

The hydraulic conductivity estimate based on drawdown data from well 0191 is the largest of all hydraulic conductivity estimates for the alluvial aquifer. The Slug Test Method is one of a number of different methods that are used to evaluate the permeability (or hydraulic conductivity) of an aquifer. The procedure involves either adding or removi ng a measured quantity of water from a well rapidly, followed by making a rapid series of water-level measurements to assess the rate of water-level recovery (either rising-head or falling-head). A number of methods have been developed to calculate hydraulic conductivity (or permeability) from slug test data. We usually use the Method of Bouwer and Rice (1976) to obtain hydraulic conductivity from raw slug test data.

As for slug tests, a plot of ln-normalised head (Ho/Hi) against slug tests in partially penetrating wells in unconfmed aquifers (Hyder and Butler, 1995). It relies on. Thiem equation, and similarly to the previous method, does Keywords: Laxemar, Soil, Quaternary deposits, Slug test, Hydraulic parameters,.

Analysis of Slug Tests in Formations of High Hydraulic Conductivity General Overview. The two procedures described here for the analysis of slug tests in formations of high hydraulic conductivity implement straightforward extensions of models previously proposed for tests in less-permeable formations (Bouwer and Rice, 1976; Hvorslev, 1951).

A slug test involves the instantaneous injection or withdrawal of a volume or slug of water or solid cylinder of known volume. This is accomplished by displacing a known volume of water from a well and measuring the artificial fluctuation of the groundwater level.

Spreadsheets for the Analysis of Aquifer-Test and Slug-Test Data, Version 1.2. By Keith J. Halford and Eve L. Kuniansky. Preface. This report documents several spreadsheets that have been developed for the analysis of aquifer-pumping test and slug-test data.

This is equivalent to an instantaneous addition of water to the well, which results in a sudden rise in the water level in the well (also called a "falling head" test). In general, the test is conducted by adding (or removing) a slug to raise (or lower) the water level from its original equilibrium level, and measuring the rate of water level recovery. Other means of displacing the water column, such as compressed air, are equally amenable to analysis by these methods.

As part your aquifer characterization efforts, your group will perform slug tests to While calculations of the values (e.g. hydraulic conductivity, estimated. calculated permeability of the packer test interval may water level is maintained .
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Three-hundred eight slug tests were conducted in a 5 x 5 m area in a coastal, sandy aquifer at the Georgetown site in South Carolina to characterize three-dimensional aquifer heterogeneity. Methods developed by Hvorslev, Bouwer and Rice, and Cooper et al. were employed to estimate hydraulic conductivity values form the slug test data. HAM Technical Editor Bob Sterne continues working on slug ballistics.

Overdamped slug tests A mathematical solution by Hvorslev (1951)is useful for determining the hydraulic conductivity (K) of nonleaky confinedaquifers. Analysis involves matching a straight lineto water-level displacement data collected during an overdamped slug test.
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Slug testing procedure, slug test analysis, observation well effects on the slug tests and slug tests in well development are described. Two analytical methods are presented as being the most

There are four stages to this calculation. First Stage : Find hydrostatic pressure to create a specific drop inside of the Drill Pipe.

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K values are calculated with the Bouwer & Rice (1976) method modified for anisotropy by Zlotnik (1994) and the Hvorslev (1951) method. The guidelines of Butler (

Comparison of results from the instream slug tests and empirical calculations showed that Hazen and Harleman equations produced results of K similar to those from the slug tests whereas the Krumbien and Monk and the Kozeny-Carmen equation overestimated the K values of the streambed material. Slug catcher sizing is a function of many things including the various operating cases and flows and crtically the liquid pump out or flow out flow rate from the slug catcher. Pigging will give you a big volume, but the usual get -out is to pig at a much lower gas flow rate when pigging and reduce pig velocity to 2-3 m/sec, hence reducing your liquid flow rate into the slug catcher. Slug Load in Pipe Bends Example Lets assume that we have a slug moving through a bend. As a worst case we assume that the slug contains no gas (100 % liquid). Further we assume that there is 'nothing' in front of and behind the slug. The slug is assumed so short that it does only ‘fill’a fraction of the real bend; 0.40 m has been chosen.