A New R Program for Flow-Log Analysis of Single Holes (FLASH-R)

Area of Science:

• Geosciences
• Hydrogeology
• Environmental Engineering

Background:

• Borehole flow logs are crucial for understanding subsurface fluid flow.
• Accurate estimation of fracture transmissivity and hydraulic head is essential for groundwater resource management and contaminant transport studies.
• Existing analytical tools may lack advanced features for parameter estimation and uncertainty analysis.

Purpose of the Study:

• To introduce an updated version of the FLASH computer program for analyzing borehole vertical flow logs.
• To enhance the estimation of fracture (or layer) transmissivities and far-field hydraulic heads.
• To incorporate advanced features for more rigorous parameter estimation and uncertainty analysis.

Main Methods:

• The study presents a new version of the FLASH computer program, written in the R open-source environment.
• The program analyzes vertical flow logs from boreholes.
• New features include enhanced parameter estimation, uncertainty analysis, and improved data import capabilities.

Main Results:

• The updated FLASH program offers improved analysis of borehole vertical flow logs.
• It provides more rigorous estimation of fracture transmissivities and far-field hydraulic heads.
• The program features a dynamic user interface compatible with multiple operating systems.

Conclusions:

• The enhanced FLASH program provides a robust and user-friendly tool for hydrogeological analysis.
• It facilitates more accurate and reliable estimation of key subsurface hydraulic parameters.
• The open-source nature and improved features make it a valuable resource for researchers and practitioners.