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| LaTeX Math Inline |
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| body | --uriencoded--\rho_g%5e%7B\circ%7D |
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| fluid density at surface reference conditions | | LaTeX Math Inline |
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| body | --uriencoded--V_m%5e%7B\circ%7D |
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| molar volume at surface at reference conditions |
| fluid density at reservoir conditions | | molar volume at reservoir conditions |
The reference conditions may vary from case to case but most popular choice are: Separator, Stock Tank and SPE STP.
It can be expressed through the Z-factor as:
| LaTeX Math Block |
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| anchor | XALSKBgRef |
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| alignment | left |
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|
B_g(p,T) = Z(p, T) \cdot \frac{T/T_T^{\rm refcirc}}{p/p_p^{\rm refcirc}} |
where
p_%7B\rm ref%7D | reference pressure |
| reservoir temperature | | LaTeX Math Inline |
|---|
| body | --uriencoded--T%5e%7B\circ%7D |
|---|
|
| reference temperature |
If reference conditions are set at SPE STP then equation
takes explicit from as:| LaTeX Math Block |
|---|
|
B_g(p,T) = 0.3470 \cdot Z(p, T) \cdot \frac{T}{p} |
where
| reservoir pressure in [kPa ] |
| reservoir temperature in [K] |
T_%7B\rm ref%7Dreference temperature
See Also
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Petroleum Industry / Upstream / Subsurface E&P Disciplines / Fluid (PVT) Analysis / Dynamic fluid properties
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