Optimizing Production Schedule of Coalbed Methane Wells Using a Stochastic Evolution Algorithm

Figure 9

The optimized well bottom hole pressures for problems with different control frequencies. (a) Timestep = 1 d. (b) Timestep = 7 d. (c) Timestep = 15 d. (d) Timestep = 30 d.

(a)

(b)

(c)

(d)