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Capillary pressure (Pc) curves: pore throat size determination
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Revision as of 20:29, 31 January 2014
11 bytes added
,
20:29, 31 January 2014
table and math
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Line 49:
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| Pore throat size ( ''r'' ) from S<sub>w</sub>
| Pore throat size ( ''r'' ) from S<sub>w</sub>
+
|
# Enter the X-axis at percent pore volume (S<sub>w</sub> value).
# Enter the X-axis at percent pore volume (S<sub>w</sub> value).
# At the intersectionof grid line and P<sub>c</sub> curve, read the corresponding value for ''r'' on the Y-axis
# At the intersectionof grid line and P<sub>c</sub> curve, read the corresponding value for ''r'' on the Y-axis
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:<math>\mbox{h} = 200 \mbox{ psi} \times 0.7 = 140 \mbox{ ft of oil column}</math>
:<math>\mbox{h} = 200 \mbox{ psi} \times 0.7 = 140 \mbox{ ft of oil column}</math>
−
:<math>
&
=200 \mbox{ psi} \times 0.4 = 50 \mbox{ ft of gas column}</math>
+
:<math>
\mbox{h}
=200 \mbox{ psi} \times 0.4 = 50 \mbox{ ft of gas column}</math>
The minimum pore throat radius entered when S<sub>w</sub> is 20% and P<sub>c</sub> is [[pressure::200 psi]] is 0.5μ.
The minimum pore throat radius entered when S<sub>w</sub> is 20% and P<sub>c</sub> is [[pressure::200 psi]] is 0.5μ.
Matt
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