IARF Pressure Profile

Interactive radial homogeneous infinite-acting pressure profile. Move any slider to recalculate the pressure curve, radius of investigation, and drawdown marker.

Radius of investigation 0 ft

Total drawdown to BHP 0 psi

Well pressure incl. skin 0 psia

Skin delta-P 0 psi

Skin boundary radius 0 ft

Reservoir

k md

h ft

phi %

mu cp

Ct x10^-6 1/psi

Well and test

q bbl/d

t hr

rw ft

S skin

ks/k damaged zone perm ratio

Pi psia

Bo rb/stb

Compact near-well radius axis

Implemented equation Reservoir: p(r,t) = Pi - 162.6 q Bo mu / (k h) * [log10(t) + log10(k / (phi mu Ct r^2)) - 3.228] Wellbore skin drawdown: + 162.6 q Bo mu / (k h) * 0.8686 S Positive skin composite radius: rws = rw * exp(S / (k/ks - 1)) Negative skin equivalent radius: rwe = rw * exp(-S) rD = 0.029 * sqrt(k t / (phi mu Ct))

Pressure profile

Radial, homogeneous, infinite acting

Investigation radius Drawdown X axis Y axis