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Flowrate of a given specific fluid component(s) or pseudo-component measured at separator(s) measured at SPE Standard Conditions (STP).


Whenever is used the fluid component should for the fluid component / pseudo-component for which the surface flowrates is measured should be explicitly specified to avoid confusions For confusion, for example:

Expression
Property
Abbreviation
SymbolMeaning
Oil production rate

LaTeX Math Inline
body

q

--uriencoded--q%5e%7B\uparrow%7D_O

Separator measurement of total production of oil from all produced fluid phases

Excerpt Include
Oil production rate
Oil production rate
nopaneltrue

Gas production rate

LaTeX Math Inline
body

q

--uriencoded--q%5e%7B\uparrow%7D_G

Separator measurement of total production of gas from all produced fluid phases

Excerpt Include
Gas production rate
Gas production rate
nopaneltrue

Water production rate

LaTeX Math Inline
body

q

--uriencoded--q%5e%7B\uparrow%7D_W

Separator measurement of total production of water from all produced fluid phases

Excerpt Include
Water production rate
Water production rate
nopaneltrue

Liquid production rate

LaTeX Math Inline
body

q_{LIQ}

--uriencoded--q%5e%7B\uparrow%7D_L

Excerpt Include
Liquid production rate = qL
Liquid production rate = qL
nopaneltrue

LaTeX Math Inlinebody= q_O + q_W

Water injection rate

LaTeX Math Inline
body

q_{WI}

--uriencoded--q%5e%7B\downarrow%7D_%7BWI%7D

Excerpt Include
Water injection rate = qWI
Water injection rate = qWI
nopaneltrue

Separator measurement of total water injection

Gas injection rate

LaTeX Math Inline
body

q_{GI}

--uriencoded--q%5e%7B\downarrow%7D_%7BGI%7D

Excerpt Include
Gas injection rate =qGI
Gas injection rate =qGI
nopaneltrue

Separator measurement of total gas injection


The surface flowrates are also used to calculate the total sandface flowrate at downhole conditions.


In case of Volatile Oil Reservoir the relation to sandface flowrates 

LaTeX Math Inline
body--uriencoded--\%7B q_O%5e%7B\uparrow%7D, \, q_G%5e%7B\uparrow%7D, \, q_W%5e%7B\uparrow%7D \%7D
 and mass flowrates
LaTeX Math Inline
body--uriencoded--\%7B \dot m_O%5e%7B\uparrow%7D, \, \dot m_G%5e%7B\uparrow%7D, \, \dot m_W%5e%7B\uparrow%7D \%7D
 are detailed in Volatile Oil Fluid @model.

The key equations are given below: 


LaTeX Math Block
anchorqO
alignmentleft
q_O^{\uparrow} =  \frac{q_o}{B_o} + \frac{R_v \, q_g}{B_g}



LaTeX Math Block
anchorqO1
alignmentleft
q_O^{\uparrow} = \frac{\dot m_O^{\uparrow}}{\rho_O}



LaTeX Math Block
anchorqG
alignmentleft
q_G^{\uparrow} =\frac{q_g}{B_g} + \frac{R_s \, q_o}{B_o}



LaTeX Math Block
anchorqG1
alignmentleft
q_G^{\uparrow} = \frac{\dot m_G^{\uparrow}}{\rho_G}



LaTeX Math Block
anchorqW
alignmentleft
q_W^{\uparrow} =  \frac{q_w}{B_w}



LaTeX Math Block
anchorqW1
alignmentleft
q_W^{\uparrow} = \frac{\dot m_W^{\uparrow}}{\rho_W}



See Also

...

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

Well & Reservoir Surveillance ]

Surface flowrates ] [ Oil surface flowrate ] [ Gas surface flowrate ] [ Water surface flowrate ] [ Liquid production rate ]

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

Volatile Oil Fluid @model ]