CAPILLARY PRESSURE - UPC
CAPILLARY PRESSURE - UPC
CAPILLARY PRESSURE - UPC
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Daniel Fernàndez Garcia<br />
<strong>UPC</strong> – Constitutive eqs.<br />
MODELS OF RELATIVE PERMEABILITY<br />
3-PHASE SYSTEMS<br />
Stone’s 1 model (1970) – Estimates of K rn based on two-phase systems<br />
First K rw (S w ) is obtained as for water-NAPL. Then K rg (S g ) is<br />
determined for gas-NAPL phase system.<br />
NAPL<br />
κ<br />
⎛<br />
= ⎜<br />
S ⎞<br />
⎟κ κ<br />
⎝<br />
⎠<br />
n<br />
rn<br />
⎜<br />
rnw rng<br />
(1−S w)(1−S g)<br />
⎟<br />
κ<br />
rnw<br />
=κrn (S<br />
w<br />
) in a water-NAPL system<br />
κ<br />
= κ<br />
rng rg g<br />
(S ) in a gas-NAPL system<br />
34
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