Overdamped slug test software

R radius measured from centre of well to undisturbed. This is the only slug test analysis method that will provide an estimate of aquifer storativity. Astm d4044 96 standard test method for field procedure. These solutions allow you to analyze data with underdamped and overdamped response and include a correction for frictional well loss in smalldiameter wells. Overdamped slug tests typically occur in aquifers of low to moderate hydraulic conductivity k and exhibit the type of response depicted in figure 2. A nonlinear model for analysis of slugatest data wiley. However, slug tests reflect conditions near the well, therefore are influenced by nearwell conditions, such as gravel pack, poor well. This method was originally published in an article entitled slug test procedure to evaluate hydraulic conductivity of an. Slug tests are a method of determining the hydraulic conductivity or. Characteristics equations, overdamped, underdamped, and critically damped circuits. Raw timewater level series are entered with mutiple slugs from a single well.

Data analysis exercises include both simple and advanced pumping and slug test analyses to match the range of conditions typically encountered during field investigations. Aqtesolv is the most advanced software for slug test analysis and features the most. A slug test for determining hydraulic conductivity of. The solution is appropriate for the conditions shown in the following figure. Ansdimat advanced software system for aquifer test analytical and numerical analysis and estimation by direct and inverse methods. Hvorslev 1951 pdf the hvorslev method of slug test analysis addresses a variety of well and aquifer geometries, is easy to apply, and is widely used. Hvorslev 1951 solution for a slug test in an unconfined aquifer404 dagan 1978 solution for a slug test in an unconfined aquifer406 hyder et al.

Choose aqtesolv to get the most advanced tools at an affordable price. While doing slug tests in highpermeability aquifers, we have consistently seen deviations from the. Overdamped slug tests aquifer testing 101 aqtesolv. Learn more waterloo hydrogeologic is located at 219 labrador dr. It is a method used by hydrogeologists and civil engineers to determine the transmissivityhydraulic conductivity and storativity of the material the well is. Choose from solutions for confined, leaky and fractured aquifers. Hydraulic properties determined by slug tests are representative only of the material in the immediate vicinity of the well. The following assumptions apply to the use of the hvorslev slug test method.

Aug 30, 2011 data from an overdamped slug test in a well with a fully submerged screen screen below water table may exhibit a concave upward appearance on a plot of log normalized head vs. The first approach is a spreadsheetbased procedure using the excel software package microsoft, 1997, while the second utilizes any of a number of scientificgraphics packages. Technical guidance manual for ground water investigations. The solutions for constanthead tests apply to singlewell configurations. The curvature can make analysis by straightline methods. Review of interpretation methods with mathematical, physical, and numerical analysis of storativity influence several methods are. Aqtesolv is available in standard and pro versions. Mar 28, 2020 the hvorslev slug test is designed to estimate the hydraulic conductivity of an aquifer. The primary advantages of using slug tests to estimate hydraulic conductivities. Super slug provides a draganddrop implementation of the cooper, bredehoeft, papadopulos type curve method. This approach works well for overdamped responses where water levels.

Seven groups of fractures were defined, being those of group 1, with low dip angles, the most frequent and important for flow until 65 m, and group 2 n to nesw with high dips to w and nw more frequent in deeper felsic gneisses. For overdamped slug tests, two different methods were used for the slugtest. Typical control well configuration for slug test in unconfined aquifer with fully submerged well screen. A general nonlinear model based on the navierstokes equation, nonlinear frictional loss, nondarcian flow, acceleration effects, radius changes in the wellbore, and a hvorslev model for the aquifer has. Slug test analysis software aqtesolv is the most comprehensive slug test software for overdamped to underdamped rising head or falling head tests in confined, unconfined and fractured aquifers.

Astm d4044 d4044m 15 standard test method for field. Both approaches involve the graphical matching of theoretical type curves to plots of slug test response data. A slug test is designed to measure the hydraulic conductivity, or flow, of ground water near an aquifer by removing or displacing a slug of water or soil from below the ground and measuring the flow or pressure at which the ground water table changes. Aqtesolv is the original, allinone software package for the analysis of pumping tests, slug tests and constanthead tests. Fit head vs time data to model to solve for c d methods to solve for c d curve matching, match to type curves least squares minimize sum of the square differences, e. Donohue, university of kentucky 2 in previous work, circuits were limited to one energy storage element, which resulted in firstorder differential equations. It c onsists in inducing an abrupt change in water level in a well and monito ring the subsequent water level recovery. Software for slug test analysis by hydrosolve, inc. Slug test characterization results for multitestdepth. Slug test analysis software aqtesolv is the most comprehensive slug test software for overdamped to underdamped rising head or falling head tests in. Survey, toxic substances hydrology program, proceeding of the tech. A number of methods have been developed to calculate hydraulic conductivity or permeability from slug test data. To determine aquifer characteristics, pneumatic slug tests were performed on selected zones and aquifers at a monitoring site near the lost hills oil field in the southern san joaquin valley in kern county. H 0 is the difference between the pretest level and the highest level immediately after insertion of the slug, h is the difference between the pretest level and the level at some time t after the insertion of the slug.

Gwpd 17conducting an instantaneous change in head slug. An automated inverse method for slug tests overdamped case in confined aquifers, hydrological sciences journal, doi. Slug tests are used to determine in situ aquifer hydraulic conductivity more quickly and economically than by a pump test. Data from more than 100 slug tests, including tests for low permeability glacial tills and fractured rock deposits, coarsegrained sand deposits, and simulated tests were analyzed. Aquifer test data for multiplewell monitoring site lhsp. The curvature can make analysis by straightline methods such as bouwer and rice 1976 somewhat ambiguous. The card images of the input data file that follow include those that contain the slugtest data points, three data pairs per line if sinusoidal peaks are being read for an underdamped response, table 1 or the entire set of data pairs, one pair per line, for the overdamped response table 2. Slug test responses are analyzed with kgs solution which ranges from underdamped to overdamped conditions.

Analysis of slugtests with highfrequency oscillations. Slug test bail test in cases where the water level drops within the screened interval, the plot of hh 0 vs. Learn more about recommended normalized head ranges and slug testing in aquifer testing 101 at the aqtesolv web site. Slug test responses can run the gamut from overdamped to underdamped. Shareware junction periodically updates pricing and software information of aqtesolv v. Slug tests for determining hydraulic conductivity of natural. The slug test analysis sta software is a simple, userfriendly software package designed for use with.

Civil and environmental engineers, as well as hydrologists and hydrogeologists, will use a slug test to determine the. Aqtesolv slug tests includes solutions by butler 1998, springergelhar 1991 and butlerzhan 2004 for the analysis of slug tests with oscillatory response due to inertial effects. The bouwerrice slug test is designed to estimate the hydraulic conductivity of an aquifer. Computations were performed using aqtesolv software and analyzed using the kgs model package for overdamped slug tests performed in fully and partially penetrating wells in a confined aquifer hyder, 1994. The waterlevel response displacement from a slug test can be classified as either overdamped or underdamped. Conduct line fitting for overdamped aquifer responses. Hydraulic conductivity is estimated by fitting a straight line to normalized displacements on a logarithmic axis vs. Data from an overdamped slug test in a well with a fully submerged screen screen below water table may exhibit a concave upward appearance on a plot of log normalized head vs. Characteristics equations, overdamped, underdamped, and.

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. Both approaches involve the graphical matching of theoretical type curves to plots of slugtest response data. Two inverse methods are typically used to assess the slug test data and derive. This research presents a hydraulic conductivity k analysis of unconfined aquifers using slug tests. All wells included in this testing program are located around within and around the. The rate of inflow or outflow, q, at the piezometer tip at any time t is. With the slug test the hydraulic conductivity or transmissibility 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. By measuring and recording the rate of return to static conditions recovery, one is able to estimate the local horizontal hydraulic conductivity of the material surrounding the well. The accuracy of a slug test is a function of many factors, including well construction, field procedures, and analysis method.

Introduction slug testing is a common field method for estimating aquifer permeability. Slug test method measurement of hydraulic conductivity. This is accomplished by displacing a known volume of water from a well and measuring the artificial fluctuation of the groundwater level. An automated inverse method for slug tests overdamped. Following the field testing, attendees will be analyzing their data using spreadsheets and commercially available software. In this case, the fit should be obtained for the second straight line portion bouwer, 1989. Aqtesolv has been the worlds leading software for the analysis of aquifer tests since 1989. The slug test acquisition software included with the gw1600 kit is loaded on a portable computer and used to observe and acquire slug test data in the field. Gwpd 17conducting instantaneous change in head slug test with mechanical slug and submersible pressure trans ducer 147 data accuracy and limitations 1. During an overdamped slug test, response data measured in the control well, in the absence of noise, decrease monotonically with increasing. This is of special importance when testing a potentially contaminated aquifer. Until recently models were readily available for only the two extremes.

The procedure involves either adding or removi ng a measured quantity of water from a well rapidly, followed by making a rapid series of waterlevel measurements to assess the rate of waterlevel. Aqtesolv, advanced software for slug test analysis, includes the recommended normalized head ranges to assist you with visual curve matching. Slug tests offer an efficient method for estimating the hydraulic parameters of an aquifer without water pumping. Reverse test if desired, after a slug in test has been finished and equilibrium reached, a slug out test can be performed as a check. You are encouraged to bring your own laptop to this course, however, computers will be available for an additional fee. A slug test involves inducing a rapid change in water level in a test well see note. Slug tests for determining hydraulic conductivity of. Change in head slug test3 d 5912 test method analytical procedure for determining hydraulic conductivity of an uncon. Enable javascript in your browsers settings to view menus and other features on this site. For over damped responses, a straightline fit is automatically made by the software and plotted onscreen with the t0 value determined for use in either the.

Kgsofr 200040simple procedures for analysis of slug tests. Reverse test if desired, after a slugin test has been finished and equilibrium reached, a slugout test can be performed as a check. Estimation of hydraulic conductivity using the slug test. Software piracy is theft, using crack, password, serial numbers, registration codes, key generators, cd key, hacks is illegal and prevent future development of aqtesolv v.

The slug test analysis sta software is a simple, userfriendly software package designed for use with slug test data obtained with the geoprobe systems gw1600 pneumatic slug test kit. On may 30th and 31st, 2018, pneumatic slug tests were performed at five monitoring wells located at the multiplewell groundwatermonitoring site lhsp 26s21e07j1 through. Overdamped slug tests typically occur in aquifers of low to moderate hydraulic conductivity k and exhibit the type of response. The solutions for slug tests apply to the analysis of singlewell underdamped and overdamped slug test in unconfined and confined aquifers. For ease in referencing results for the ou zp1 field testing program within the. Kgsofr 200026analyzing slug tests for maximum accuracy. Compare volume of slug to actual water displacement in the well. We usually use the method of bouwer and rice 1976 to obtain hydraulic conductivity from raw slug test data. A slug test is a particular type of aquifer test where water is quickly added or removed from a groundwater well, and the change in hydraulic head is monitored through time, to determine the nearwell aquifer characteristics. Slug periods are identified and selected, normalized responses are plotted en masse. Posttest procedure make a preliminary analysis of the data before leaving the test area. Slug tests in unconfined aquifers scholarworks at wmu. Aquifertest is an easytouse software package for analyzing, interpreting and visualizing pumping and slug test data.

Choose aqtesolv to get the most advanced software for slug test analysis including methods for single and multiwell tests, overdamped and underdamped conditions, wells screened across the water table, and more. Slug tests frequently are analyzed with bouwer and rice to estimate hydraulic conductivities. The first approach is a spreadsheetbased procedure using the excel software package microsoft, 1997, while the second utilizes any of. Post test procedure make a preliminary analysis of the data before leaving the test area.

H 0 is the difference between the pre test level and the highest level immediately after insertion of the slug, h is the difference between the pre test level and the level at some time t after the insertion of the slug. Pdf an automated inverse method for slug tests overdamped. The slug test is simpler and quicker than the theis pumping test because observation wells and pumping the well are not. Data from a typical overdamped fallinghead slug test in an unconfined aquifer with fully submerged well screen data from batu 1998. Underdamped slug test model solutions how is k determined. A slug test involves the instantaneous injection or withdrawal of a volume or slug of water or solid cylinder of known volume. An overdamped slug test may be analyzed using several methods, which are known to yield different results for the hydraulic conductivity. The attendees will then conduct pneumatic slug tests in the field on the university of connecticut campus in wells that exhibit nonoscillatory overdamped and oscillatory underdamped responses. The slug test analysis software is a graphical interface used to model the data collected from a slug test conducted in direct push tools or conventional monitoring wells that provide either an over damped or underdamped response.