Volumetric flowrate of mostly degasified oil normally measured at SPE Standard Conditions (STP).

Usually produced from subsurface oil phase and gas phase.

It usually requires additional processing before taking commercial form of the Crude Oil.


For MBO fluid @model the oil surface flowrate  is related to oil sandface flowrate  and gas sandface flowrate as below (see Derivation):

q_O = \frac{q_o}{B_o} + R_v \,\frac{q_g}{B_g} 

where

oil formation volume factor between separator and sandface pressure/temperature conditions

Vaporized Oil Ratio at sandface pressure/temperature conditions


The oil surface flowrate  relates to Surface Liquid production rate as:

q_O = (1-Y_W) \cdot q_L


The oil surface flowrate   relates to Total sandface flowrate  as:

q_O = \frac{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:

q_O = \frac{q_o}{B_o} =(1-Y_W) \cdot q_L = \frac{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


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 ]

Crude Oil ]