agarwal_skin_solution_dlogt: agarwal_skin_solution_dlogt

In khaors/pumpingtest: R Package for the analysis and evaluation of pumping tests

agarwal_skin_solution_dlogt

Description

Function to calculate the derivative of drawdown with respect to log of time of the Agarwal solution (skin and wellbore storage)

Usage

agarwal_skin_solution_dlogt(ptest, a, t0, sigma, 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
sigma	Value of the skin factor
t	Numeric vector with time

Value

A list with

• x: time coordinates

• y: Derivative value

Author(s)

Oscar Garcia-Cabrejo [e-mail]

References

Agarwal, R.; Al-Hussainy, R. & Ramey, H. An Investigation of Wellbore Storage and Skin Effect in Unsteady Liquid Flow: I. Analytical Treatment. Society of Petroleum Engineers Journal., 1970

See Also

Other agarwal_skin functions: agarwal_skin_WF_LT, agarwal_skin_calculate_parameters, agarwal_skin_solution_initial, agarwal_skin_solution, agarwal_skin_well_function

Examples

data(papadopulos_cooper)

khaors/pumpingtest documentation built on June 10, 2025, 4:53 a.m.