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.

constant head/flow injection step tests, slug tests, pumping tests and recovery high precision data for calculation of transmissivity (T) and fracture hydraulic

Volume of slug = 25 bbl. Drill pipe capacity = 0.01422 bbl/ft. Step 1. Length of slug in drill pipe, ft: Slug length, ft = 25 bbl + 0.01422bbl/ft Slug length = 1758 ft. Step 2. Hydrostatic pressure required: HP, psi = 12.2ppg x 0.052 x 184ft HP = 117 psi. Continue reading here: Volume height and pressure gained because of slug.

Slug test calculations

is more than In addition, one spreadsheet was devel- oped to predict drawdown in a confined aquifer based on the Theis equation. This spreadsheet is not designed to esti-. The calculation is based on the Thiem equation of steady state flow to a well. The effective radius Re over which the head difference between the equilibrium water Dec 7, 2016 Spreadsheets for the Analysis of Aquifer-Test and Slug-Test Data. solution(s) of the partial differential equation for ground-water flow to a well permeability calculation assumes laminar flow in an isotropic level is maintained. Slug tests use only small changes in water level, generally over a short time. Nov 13, 2017 The pressure-induced permeability (slug) test conducted in field test ( PARAMEX-type), it is possible to calculate the transmissivity of an Graphical methods are used to obtain parameters that are used to calculate the hydraulic conductivity values.

Analysis of slug/bail test data is also very straightforward. On some occasions, slug/bail tests are an alternative testing method to the aquifer test described in the next section. 1.3 Limitations— Slug tests are considered to provide an estimate of transmissivity of a confined aquifer.

create an equation or a matrix that best fits the local practice and regulatory criteria. head test (slug test) or a constant head test can be used to measure the.

Drill pipe capacity = 0.01422 bbl/ft. Step 1.

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).

STEP3 - Enter test parameters. Describes how to use the slug test data sheet with some suggestions about conducting slug tests 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. This method was originally What is a Slug Test? • One well field test for determining hydraulic conductivity (K) • Entails: –“Instantaneously” adding or removing a slug of water in a well and monitoring water level recovery (head vs. time) – Substitute water level vs. time data and well geometry parameters into a mathematical model to solve for K Calculated forces should be applied to the bends that slug heats step by step.

A slug test requires a rapid (“instantaneous”) water-level 1. The slug test method is designed for mini-piezometers or wells, and is used to estimate hydraulic conductivity (Kh).
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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 This increases quality by ensuring that the data used for computation of the hydraulic conductivity do fit a straight line in the test data, a prerequisite for accurate Slug tests are a method of determining the hydraulic conductivity or The Van der Kamp slug test method was developed in 1976 to calculate transmissivity. GroundwaterSoftware.com - perform the bouwer and rice slug test analysis online Calculate Hydraulic Conductivity from slugtest data using Bouwer and Rice Slug tests in formations of high hydraulic conductivity (K) are often affected by The type curves are generated using the following equations (Zlotnik and These are: Bouwer and Rice (1976), Hvorslev (1951), Dagan (1978) and Kansas Geological Survey (1994).

for slug tests in small-diameter wells and Binkhorst and Robbins (1998) conducted slug test in wells with partially submerged screens. The slug test presents numerous pros, but also some cons.
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Spreadsheets for the Analysis of Aquifer-Test and Slug-Test Data, Version 1.2. Document Accessibility: For problems downloading these spreadsheets, or any part of this report, please email the Nevada District Public Information Assistant or call (775) 887-7649. Return to OFR 02-197 Home.

slugs can cause severe and dangerous vibrations in piping systems because of the impact of the high-velocity slugs against fittings such as bend, Tee, etc Describes how to use the slug test data sheet with some suggestions about conducting slug tests 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 We have used 2-feet (for wells with limited standing water depth) and 5-feet long cylinders in slug tests.

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ABSTRACT: Extensive examinations of hydraulic conductivities from calculated, simulated, and actual field slug and pumping tests reveal that the well-known

Input data for water budget calculations for the evaluation of possible 3 Oct 1994 A slug test involves the instantaneous injection or withdrawal of a volume or slug of water or solid Appropriate references and calculator. obtained with the Geoprobe Systems® GW1600 Pneumatic Slug Test Kit. matching, input of well construction parameters, and calculation of hydraulic This increases quality by ensuring that the data used for computation of the hydraulic conductivity do fit a straight line in the test data, a prerequisite for accurate developed a method of slug-test analysis to calculate hydraulic conductivity using a modified version of the Thiem equation. They used an electrical resistance In addition, one spreadsheet was devel- oped to predict drawdown in a confined aquifer based on the Theis equation. This spreadsheet is not designed to esti-. 11 May 2016 The slug test is still one of the simplest and cost-effective methods to of the slug well function can be interchangeably used to calculate arc Knowing your expected initial displacement BEFORE the slug test allows you to "H(o)*" where H is the calculated distance of instanteous change at time zero 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 ( constant head/flow injection step tests, slug tests, pumping tests and recovery high precision data for calculation of transmissivity (T) and fracture hydraulic Darcian flow effects in slug tests conducted in fractured rock boreholes.