A computer program for flow-log analysis of single holes (FLASH).

Authors :: Day-Lewis FD
Johnson CD
Paillet FL
Halford KJ
Source :: Ground water [Ground Water] 2011 Nov-Dec; Vol. 49 (6), pp. 926-31. Date of Electronic Publication: 2011 Feb 09.
Publication Year :: 2011
Abstract: A new computer program, FLASH (Flow-Log Analysis of Single Holes), is presented for the analysis of borehole vertical flow logs. The code is based on an analytical solution for steady-state multilayer radial flow to a borehole. The code includes options for (1) discrete fractures and (2) multilayer aquifers. Given vertical flow profiles collected under both ambient and stressed (pumping or injection) conditions, the user can estimate fracture (or layer) transmissivities and far-field hydraulic heads. FLASH is coded in Microsoft Excel(5) with Visual Basic for Applications routines. The code supports manual and automated model calibration.<br /> (© 2011, The Author(s). Ground Water © 2011, National Ground Water Association.)