(1) | p_r = \sum_{k=1}^N {\rm w}_k \cdot p_{rk}, \quad {\rm w}_k = \frac{q_k}{\sum q_k}, \quad \sum {\rm w}_k = 1 |
where k=1..N is running through wells with formation pressure tests p_{rk} and rates q_k
For the steady state flow in finite reservoir the relationship between Boundary-average formation pressure p_e and Field-average formation pressure p_r is going to be:
(2) | p_r = p_i + \frac{q_t}{2 \pi \sigma} \Bigg[ \ln \frac{r_e}{r_w} -0.5 \Bigg] |