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Derivative-free methods allow optimization in cases where the objective function is calculated by computer simulation and one does not have access to its derivatives. Such methods are known to require numerous function evaluations in order to achieve final convergence. This is especially true when the number of variables is large. This work studies the use of the Alternating Direction Method of Multipliers...
In the oil industry, computer simulators are routinely applied on day to day operations and in what-if analyses. With the increasing complexity of operations, engineers are relying on simulation to synthesize models for mathematical optimization or else applying derivative-free methods for simulation-based optimization, which requires only the sampling of the objective function. This work adapts an...
This work presents the application of two methods of nondifferentiable optimization applied to the problem of optimizing the economic gain in the production of oil fields operated with continuous gas-lift. The problem addressed consists in allocating the amount of lift-gas to be injected into each well, subject to a limited lift-gas compression capacity of the field, and to the minimum and maximum...
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