Volumetric flowrate of the 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 @model the gas For volatile oil fluid model the oil surface flowrate is related to oil gas sandface flowrate and gas and oil sandface flowrate as as (see derivation):
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q_OG =(1-R_v \, R_s)^{-1} \left( \frac{q_og}{B_og} +\frac{ R_vs \, \frac{q_go}{B_go} \right) |
where
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vVaporized Oil Ratio | at sandface pressure/temperature conditions |
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_OG =\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)} |
See also
See Also
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Petroleum Industry / Upstream / Subsurface E&P Disciplines / Well Testing (WT) / Flowrate Testing / Flowrate
[ Well & Reservoir Surveillance ]
[ Sandface flowrates ] [ Oil sandface flowrate ] [ Gas sandface flowrate ] [ Water sandface flowrate ]
[ Surface flowrates ] [ Oil surface flowrate ] [ Gas surface flowrate ] [ Water surface flowrate ]
[ Natural Gas ]Non-linear multi-phase diffusion derivation @model
