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Flowrate of a given fluid component or pseudo-component measured at separator


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

PropertySymbolMeaning
Oil production rate

q_O

Surface flowrate of total production of oil from all produced fluid phases measured at SPE Standard Conditions (STP).

Gas production rate

q_G

Surface flowrate of total production of gas from all produced fluid phases measured at SPE Standard Conditions (STP).

Water production rate

q_W

Surface flowrate of total production of water from all produced fluid phases measured at SPE Standard Conditions (STP).

Liquid production rate

q_L

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Water injection rate

q_{WI}

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Gas injection rate

q_{GI}

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


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