Proizvodnja I-2-Karakteristike ležišta nafte i plina.pdf
Proizvodnja I-2-Karakteristike ležišta nafte i plina.pdf
Proizvodnja I-2-Karakteristike ležišta nafte i plina.pdf
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Propusnost - račun<br />
Prema Boyle-Mariotteovom zakonu: pV = p V = pV ,<br />
1,47 + 1,013 × 10<br />
( )<br />
1 1 2 2<br />
5<br />
p1 + p2<br />
5<br />
gdje je p = = = 1,2415 × 10 Pa,<br />
p V<br />
p<br />
2 2<br />
1,013 × 10 ⋅ 1× 10<br />
1,2415 × 10<br />
5 −3<br />
a V = 2 2 = 5<br />
−3<br />
3<br />
= 0,816 × 10 m .<br />
= = × = ×<br />
−3 −6<br />
3<br />
Tada je protok <strong>plina</strong>: q V t 0,816 10 500 1,63 10 m s,<br />
−6 −4 −3<br />
brzina<br />
protjecanja: v = q A = 1,63 × 10 2× 10 = 8,16× 10 m s,<br />
te propusnost uzorka:<br />
k<br />
−3 −3 −2<br />
vμL 8,16× 10 ⋅ 0,02 × 10 ⋅ 2× 10<br />
= = =<br />
5<br />
Δ p<br />
0,457 × 10<br />
−15 2 −3<br />
2<br />
= 71,42 × 10 m = 71,42 × 10 μm<br />
=<br />
72,37md
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