Volumetric flowrate of dry gas measured at separator or at processing plantSPE 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 volatile oil fluid modelFor MBO 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
asIt relates to Liquid production rate at surface as: LaTeX Math Block |
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q_G = GORY_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_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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