Automated production optimization technique for smart well completions using real-time nodal analysis including real-time modeling

A non-transitory, computer-readable medium storing one or more instructions executable by a computer system to perform operations comprising:

• collecting, by a multilateral well optimizing system from a multilateral well during regular field optimization procedures, real-time well rates and flowing bottom-hole pressure data at various choke settings for multiple flow conditions for each lateral of the multilateral well;
• recording, by the multilateral well optimizing system during production of the well and for one lateral at a time, surface and downhole pressures and production metrics for each of the laterals;
• calibrating, by the multilateral well optimizing system using the surface and downhole pressures and the production metrics for each of the laterals, a multilateral well production model;
• estimating, by the multilateral well optimizing system using the multilateral well production model, flowing parameters of individual laterals;
• determining, by the multilateral well optimizing system using the multilateral well production model, an optimum pressure drop across each downhole valve, wherein determining the optimum pressure drop across each downhole valve comprises iteratively:
• initializing control parameters for the multilateral well;
• identifying limits for the control parameters;
• creating initial solutions for the optimum pressure drop across each downhole valve;
• evaluating, using the multilateral well production model, performance of the initial solutions;
• ranking the initial solutions according to the value of an objective function;
• performing a convergence check on the initial solutions;
• and
• creating a new instance of a solution using properties of top-performing initial solutions;
• and
• estimating, by the multilateral well optimizing system using the multilateral well production model, a productivity of each lateral during the commingled production at various choke valves settings.

A computer-implemented system, comprising:

• one or more processors;
• and
• a non-transitory computer-readable storage medium coupled to the one or more processors and storing programming instructions for execution by the one or more processors, the programming instructions instructing the one or more processors to perform operations comprising:
• collecting, by a multilateral well optimizing system from a multilateral well during regular field optimization procedures, real-time well rates and flowing bottom-hole pressure data at various choke settings for multiple flow conditions for each lateral of the multilateral well;
• recording, by the multilateral well optimizing system during production of the well and for one lateral at a time, surface and downhole pressures and production metrics for each of the laterals;
• calibrating, by the multilateral well optimizing system using the surface and downhole pressures and the production metrics for each of the laterals, a multilateral well production model;
• estimating, by the multilateral well optimizing system using the multilateral well production model, flowing parameters of individual laterals;
• determining, by the multilateral well optimizing system using the multilateral well production model, an optimum pressure drop across each downhole valve, wherein determining the optimum pressure drop across each downhole valve comprises iteratively:
• initializing control parameters for the multilateral well;
• identifying limits for the control parameters;
• creating initial solutions for the optimum pressure drop across each downhole valve;
• evaluating, using the multilateral well production model, performance of the initial solutions;
• ranking the initial solutions according to the value of an objective function;
• performing a convergence check on the initial solutions;
• and
• creating a new instance of a solution using properties of top-performing initial solutions;
• and
• estimating, by the multilateral well optimizing system using the multilateral well production model, a productivity of each lateral during the commingled production at various choke valves settings.