Geologic Resources: Slug Test Method  The Friendly Woolly Mammoth  The Friendly Dinosaur
Slug Test Method  
 

 

 

OUR SITE
Home
Resources
Software
Books
Our Mall
Geolinks
Geoforum
Geonews
Auctions
Networking
Jobs
Free Stuff
Exchange
Policies
Credits

Geologic Resources is a BBB Accredited Business. Click for the BBB Business Review of this Environmental & Ecological Services in Worcester MA

 
 
   
  Techniques for Geoprofessionals and Engineers

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 removing 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).   These evaluations have advantages and disadvantages when compared with other methods.

Advantages of the slug test method include:

  • Relatively low cost.
  • Requires little time to conduct slug test(s).
  • Involves removal of little or no water from the aquifer.

Disadvantages of the slug test method include:

  • Only evaluates a small portion of the aquifer adjacent to the well bore.
  • Does not provide an evaluation of portions of the aquifer not screened by the well being tested.
  • May be profoundly influenced by gravel or sand pack material in the bore hole adjacent to the well screen.

The type of procedure that is used to evaluate a well is often determined by aquifer conditions.   A bail-down evaluation may be conducted in aquifers that are poorly transmissive and require many minutes to recover after they have been bailed.   However, it is difficult or impossible to test a highly transmissive aquifer by bail-down methods because water level recovery is so rapid.   Assessments using transducer measurements and a data-logger may be used to evaluate hydraulic conductivity in situations where water-level recovery is either slow or rapid.   In either situation, more accurate results are generally obtained when using an in-well transducer to collect periodic water-level versus time measurements.

SLUG TEST METHOD CONTINUED....  (click here to continue)

 

 

   
     
     
     
     
     
     
     
     
     
             
 

Google
 
 

Click here for Geologic Resources Home Page Click here for Geologic Resources Resources Page Click here for Geologic Resources Free Stuff Page Click here for Geologic Resources Links Page Click here for Geologic Resources Link Directory Click here for Geologic Resources Submission Page
Click here for Geologic Resources Software Page Click here for Geologic Resources Computer Store Click here for Geologic Resources Books Page Click here for Geologic Resources Auctions Links Page Click here for Google Search Engine Click here for Yahoo Search Engine and Links
1998-201
3, Geologic Resources, All Rights Reserved

Tools Online Tools