Ratio of gas production rate q_G to oil production rate q_O:
| (1) | {\rm GOR}=Y_G=\frac{q_G}{q_O} |
The simplest way to model the GOR in a given well is the GOR Fractional Flow @model:
| (2) | GOR = Y_G = R_s + \frac{M_{rg}}{M_{ro}} \cdot \frac{B_o}{B_g} |
which provides a good estimate when the drawdown is much higher than delta pressure from gravity and capillary effects.
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 ]
[ GOR Fractional Flow @model ] [ Production Water Cut (Yw) ]