Volumetric flowrate of dry gas measured at separatorSPE Standard Conditions (STP).
Usually produced from subsurface gas phase and oil phase .
It usually requires additional processing before taking commercial form of the Natural Gas.
For MBO fluid @modelFor volatile oil fluid model the gas surface flowrate is related to gas sandface flowrate and oil sandface flowrate as (see derivation):
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q_G =(1-R_v \, R_s)^{-1} \left( \frac{q_g}{B_g} +\frac{ R_s \, \frac{q_o}{B_o} \right) |
where
The gas surface flowrate relates to Surface Liquid production rate
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q_G = Y_G \cdot (1-Y_w) \, q_L |
The gas surface flowrate relates to Total sandface flowrate
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q_G = \frac{ Y_G \cdot (1-Y_W)}{B_w Y_W + \left[ (B_o - R_s B_g) + (B_g - R_v B_o) \, Y_G \right] \cdot (1-Y_W)} \cdot q_t |
It simplifies for the Black Oil model (
) to:
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q_G =\frac{q_g}{B_g} +\frac{R_s \, q_o}{B_o} = Y_G \cdot (1-Y_w) \, q_g_L = \frac{ Y_G \cdot (1-Y_W)}{B_w Y_W + \left[ (B_o - R_s B_g) + B_g \, Y_G \right] \cdot (1-Y_W)} \cdot q_t |
See Also
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Petroleum Industry / Upstream / Subsurface E&P Disciplines / Well Testing (WT) / Flowrate Testing / Flowrate
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[ Surface flowrates ] [ Oil surface flowrate ] [ Gas surface flowrate ] [ Water surface flowrate ]
[ Natural Gas ]
