agarwal_recovery_calculate_parameters

Source: R/agarwal_recovery_utilities.R

Wrapper to function theis_calculate_parameters (The recovery test is analyzed using the Theis solution)

agarwal_recovery_calculate_parameters(ptest, par, hydraulic = TRUE)

Arguments

ptest

A pumping_test object
par

A list with the values of slope and intercept (a and t0) of the straight line fitted to the drawdown data using the Cooper-Jacob approach
hydraulic

Logical flag to indicate if hydraulic parameters are calculated. If False, the the statistcal parameter (a and t0) are calculated.

Value

A list with the hydraulic parameters:

  • Tr: Transmissivity

  • Ss: Storage coefficient

  • radius_influence

References

Agarwal, R. (1980). A New Method To Account For Producing Time Effects When Drawdown Type Curves Are Used To Analyze Pressure Buildup And Other Test Data. SPE Paper 9289.

See also

Other agarwal_recovery functions: agarwal_recovery_WF_LT, agarwal_recovery_solution_dlogt, agarwal_recovery_solution_initial, agarwal_recovery_solution, agarwal_recovery_well_function

Examples

data(agarwal_recovery)
pump_history <- 14400
agarwal_corr <- recovery_equivalent_time(agarwal_recovery$t, agarwal_recovery$s,
                                pump_history)
ptest.agarwal <- pumping_test("Well1", Q = 0.02893519, r = 60, t = agarwal_corr$ta,
s = agarwal_corr$sa)
sol0 <- agarwal_recovery_solution_initial(ptest.agarwal)
hydr.par <- agarwal_recovery_calculate_parameters(ptest.agarwal, sol0, TRUE)