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@wikipedia


Volume of fluid which passes through wellbore per Amount of fluid mass passing through a certain area 

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bodyA
per unit time:

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\dot m_A = \frac{d Mm}{ d  t} \Big|_A = j_m \cdot A

where

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bodyj_m

mass flux


Depending on context the flowrate can be measured at separator (and called Surface flowrates) or downhole (and called Sandface flowrates).

See Also

Petroleum Industry / Upstream / Subsurface E&P Disciplines / Well Testing (WT) / Flowrate Testing

Well & Reservoir Surveillance ] [ Volumetric Flowrate ]

Sandface flowrates ] [ Oil sandface flowrate ] [ Gas sandface flowrate ] [ Water sandface flowrate ]



Mass flowrate is related to volumetric flowrate  

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bodyq_A
 and fluid density 
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body\rho_A
as:

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\dot m_A = \rho_A \cdot q_A


In case of Volatile Oil Reservoir the connection with surface flowrates will be:


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anchorqo
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\dot m_O = \rho_O \cdot q_O



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\dot m_G = \rho_G \cdot q_G



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\dot m_W = \rho_W \cdot q_W


See also

...

Natural Science / Physics / Mechanics / Continuum mechanics / Fluid Mechanics

Volumetric Flowrate ] [ Mass FluxSurface flowrates ] [ Oil surface flowrate ] [ Gas surface flowrate ] [ Water surface flowrate ]