GGU-SLUGTEST: Pressurised slug tests

When entering the test data for evaluation of so-called pressurised slug tests (pulse tests), the casing radius r_c must be replaced by:

where:

r_c :   Casing radius [m]

l :    Test distance [m]

c_w :  Compressibility of test zone [m²/N]

ρ _w : Density of water [kg/m³]

If c_w is not precisely known, calculations may be performed using the compressibility of water instead (4.78 · 10^-10 m²/N^-1 at 10 °C).