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Keywords: enopt
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Proceedings Papers

Paper presented at the SPE Reservoir Simulation Symposium, February 23–25, 2015
Paper Number: SPE-173268-MS
... Abstract We consider robust ensemble-based (EnOpt) multi-objective production optimization of on-off inflow control devices (ICDs) for a sector model inspired on a real-field case. The use of on-off valves as optimization variables leads to a discrete control problem. We propose a re...
Proceedings Papers

Paper presented at the SPE Reservoir Simulation Symposium, February 18–20, 2013
Paper Number: SPE-163657-MS
... of control variables (e.g. bottom hole pressures, well rates or valve settings) which can be rather large. Thus u is a ‘super vector’ with a number of elements N that may be as large as the number of control time steps times the number of control variables per time step. In standard EnOpt an ensemble { u...
Proceedings Papers

Paper presented at the SPE Reservoir Simulation Symposium, February 18–20, 2013
Paper Number: SPE-163645-MS
... constraint stb day Artificial Intelligence Upstream Oil & Gas control variable well control EnOpt simulation run Control step total liquid rate procedure correlation length NPV Injection Rate parametrization algorithm gradient Introduction Closed loop reservoir management...
Proceedings Papers

Paper presented at the SPE Reservoir Simulation Symposium, February 21–23, 2011
Paper Number: SPE-141317-MS
... the adjoint method. The derivative-free optimization algorithms considered for comparison include NEWUOA (New Unconstrained Optimization Algorithm), SID-PSM (Pattern Search Method guided by Simplex Derivatives), PSO (Particle Swarm Optimization), EnOpt (ensemble-based optimization) and SPSA. A brief...
Proceedings Papers

Paper presented at the SPE Reservoir Simulation Symposium, February 21–23, 2011
Paper Number: SPE-142043-MS
... under-determined. On the other hand, excessively low-frequency control adjustment may not truly optimize oil recovery. To address these issues, two simulator-independent optimization algorithms were investigated: ensemble-based optimization (EnOpt) and bound optimization by quadratic approximation...

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