| LaTeX Math Block |
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| \Delta Q_N = \frac{\Delta Q} |
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| | LaTeX Math Block |
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| \Delta Q = - \frac{B_o - R_s \, B_g}{1- R_s \, R_v} \cdot \, Q^{\uparrow}_O + \frac{ B_g - R_v \, B_o}{1- R_s \, R_v} \cdot \, \left( Q^{\downarrow}_G - Q^{\uparrow}_G + Q^{\downarrow}_{GCAP} \right) + B_w \, \left( Q^{\downarrow}_W - Q^{\uparrow}_W + Q^{\downarrow}_{WAQ} \right) |
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where
If Aquifer Expansion and/or Gas Cap expansionare unknown they are simply ignored for the first pressure modelling run:
| LaTeX Math Inline |
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| body | --uriencoded--Q%5e%7B\downarrow%7D_%7BGCAP%7D = 0, \ Q%5e%7B\downarrow%7D_%7BWAQ%7D = 0 |
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.
They can be adjusted at the next model runs by fitting formation pressure response (see Material Balance Pressure @model).
See Also
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Petroleum Industry / Upstream / Production / Subsurface Production / Field Study & Modelling / Production Analysis / Voidage Replacement Balance (VRB)
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