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The laboratory measurements of air (or any other gas ) permeability kair[NTP] should be translated to reservoir pressure conditions kair[pi] using the Klinkenberg equation |
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| body | k_{\rm air}[{\rm s.c.}] \rightarrow k_{\rm air}[{\rm frm}] |
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| k_{\rm air}[ |
{\rm frm}p_i] = \frac{k_{\rm air}[ {\rm |
s.c. |
Для низкопроницаемых коллекторов поправка Клинкенберга является более значительной, чем для высокопроницаемых коллекторов.
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value is calibrated in laboratory at reservroir pressure-temperature conditions: g{air}(p) = k_{\infty} \bigg ( 1+ \frac{b}{p} \bigg ) |
For low permeability formations the b-value is usually higher and the Klinkenberg correction is bigger.
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