gringarten_solution_dlogt

Source: R/gringarten_utilities.R

Function to calculate the derivative of drawdown with respect to logarithm of time using the Gringarten Solution

gringarten_solution_dlogt(ptest, a, t0, t)

Arguments

ptest

A pumping_test object
a

Slope of the straight line fitted to the drawdown data using the Cooper-Jacob approach
t0

Intercept of the straight line fitted to the drawdown data using the Cooper-Jacob approach
t

A numeric vector with the time values

Value

A numeric vector with the derivative of the calculated drawdown

References

Gringarten A. C., Ramey H. J., & Raghavan R., 1975. Applied Pressure Analysis for Fractured Wells, Petroleum Transactions, AIME follows page 784.

See also

Other gringarten functions: gringarten_calculate_parameters, gringarten_solution_initial, gringarten_solution, gringarten_well_function