Total sandface flowrate at producing well (or wells).
For the volatile oil fluid model the total sandface flowrate is related to surface flowrates of fluid components as:
| (1) | q_t = q_w + q_o + q_g = B_w \, q_W + (B_o - R_v \, B_g) \, q_O + (B_g - R_s \, B_o) \, q_G |
| (2) | q^{\uparrow}_t = B_w \, q^{\uparrow}_W + \frac{B_o - R_s B_g}{1 - R_v R_s} \, q^{\uparrow}_O + \frac{B_g - R_v B_o}{1 - R_v R_s} \, q^{\uparrow}_G |
where
q^{\uparrow}_W, \, q^{\uparrow}_O, \, q^{\uparrow}_G | |
B_w, \, B_o, \, B_g | formation volume factors between separator and sandface pressure/temperature conditions |
R_s, \, R_v | Solution GOR and Vaporized oil ratio at sandface pressure/temperature conditions |
In case of Black Oil the above equation simplifies to:
| (3) | q^{\uparrow}_t = B_w \, q^{\uparrow}_W + (B_o - R_s B_g) \, q^{\uparrow}_O + \frac{B_g - R_v B_o}{1 - R_v R_s} \, q^{\uparrow}_G |
See Also
Petroleum Industry / Upstream / Production / Subsurface Production / Field Study & Modelling / Production Analysis