Theis Automatic Analysis

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See Also:

Confined Aquifer Assumptions

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This is an implementation of the slope-matching method (Sen, 1986) to solve the Theis equation.

 

Recommended for:

  • Confined aquifers
  • Simultaneous analysis of data for several wells
  • Analyzing trends from early to late time to look for possible hydrogeologic boundaries
  • Can be used with as few as two drawdown measurements for rough estimate

 

 

Reliability

This method is applicable for any scenario where the Theis curve matching solution is valid. With a test with good data, results may be more consistent than with hand plotting and matching to a type curve. Measurements should be taken regularly until steady-state is reached. Too many early or late measurements will skew the averages.

 

The method is included as an example of slope-matching for automatic parameter estimation. It should be used in conjunction with traditional type curve matching methods. It may also be useful to analyze trends in the test data, or with limited data sets.