Total produced or injected flowrate of natural gas across the well-reservoir contact with the volumes measured at the sandface temperature and pressure conditions.
For the volatile oil fluid model the gas sandface flowrate is related to surface flowrates of natural gas as:
| (1) | q_g = B_g \, ( q_G - R_s \, q_O) |
where
q_O, \, q_G | crude oil and natural gas surface flowrates |
B_o, \, B_g | gas formation volume factor between separator and sandface pressure/temperature conditions |
R_s | Solution GOR aat sandface pressure/temperature conditions |
It simplifies for gas reservoir with surface flow rate q_G and gas formation volume factor B_g:
| (2) | q_g = q_G \cdot B_g |
See also
Non-linear multi-phase diffusion derivation @model