Production Optimization with Adjoint Models under Nonlinear Control-State Path Inequality Constraints

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Use of reduced-order models in well control optimization (2017, methodology): “We refer to Jansen (2011), Kourounis et al. (2014), Sarma et al. (2008) for further discussion.”
Adjoint formulation and constraint handling for gradient-based optimization of compositional reservoir flow (2014, background): “A more efficient way of approximating these gradients is to “lump” the constraints over the full simulation time frame [32].”
Theoretical connections between optimization algorithms based on an approximate gradient (2013, methodology): “However, gradient-based methods are computationally efficient if and only if adjoint code is available that allows one to compute the gradient with the equivalent of one “backward-in-time” reservoir simulation run [3, 10, 19, 21, 30, 31, 42].”