show that to achieve optimal conditions, gas injection rate must be
equal to 2.9343, 3.4711, 3.0428, 3.4275, and 2.1453 million cubic
feet for the wells 1 to 5 respectively.
In summary, it could be concluded that coefficients of developed
BoxeBehnken model determine the most proficient wells in gas
injection. In fact in cases which the number of oil wells under study
is high, the BoxeBehnken method could be applied to distinguish
the oil wells in which gas lift operation is the most efficient.