Softwear Reliability
Simulation Modeling and Analysis
Simulation Modeling and Analysis
Time Series Analysis, Forecasting and Control
Time Series Analysis, Forecasting and Control
WSC '91 Proceedings of the 23rd conference on Winter simulation
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A combined discrete-event/continuous/process-interaction simulation model has been developed to evaluate the effects of weather and supply-ship availability on off-shore drilling operations at a specified location and time of year with a specified drilling vessel. The continuous submodel includes: (a) autoregressive-moving average and transfer-function models to represent weather conditions; (b) a difference equation to monitor effective work time for the current operation on the drilling vessel; (c) difference equations to govern supply levels on all vessels; (d) state-events to stop and restart operations on all vessels; and (e) difference equations to control the movement of supply ships. The process-interaction submodel represents the flow of supply-ship traffic and the overall operation of the drilling vessel. The discrete-event submodel controls the loading and unloading of supply ships as well as the alternation of periods of calm and stormy weather.