E = \sum_{p=1}^{N_{prod}} \left[ R_O \cdot q_{O, p} + R_G \cdot  q_{G, p} \right] 
- \sum_{p=1}^{N_{prod}} C_L(Y_w, GOR)  \cdot q_{L, p}
- \sum_{p=1}^{N_{prod}} C_O  \cdot q_{O, p}
- \sum_{p=1}^{N_{prod}} C_W  \cdot q_{W, p}
- \sum_{i=1}^{N_{w, inj}} C_{w, inj}  \cdot q_{W, i}
- \sum_{j=1}^{N_{g, inj}} C_{G, inj}  \cdot q_{G, i}