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:
| Expression | Abbreviation | Meaning |
|---|---|---|
| Oil production rate | q_O | Separator measurement of total production of oil from all produced fluid phases |
Gas production rate | q_G | Separator measurement of total production of gas from all produced fluid phases |
| Water production rate | q_W | Separator measurement of total production of water from all produced fluid phases |
| Liquid production rate | q_{LIQ} | = q_O + q_W |
| Water injection rate | q_{WI} | Separator measurement of total water injection |
| Gas injection rate | q_{GI} | Separator measurement of total gas injection |
The surface flowrates are also used to calculate the total sandface flowrate at downhole conditions.