A MILP model for planning the trips of dynamic positioned tankers with variable travel time |
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| Institution: | 1. School of Management, Shanghai University, Shanghai, China;2. The Hong Kong Polytechnic University Shenzhen Research Institute, Nanshan District, Shenzhen, China;3. Department of Logistics & Maritime Studies, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, China;4. Department of Decision Sciences, HEC Montréal, Montréal, Canada |
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| Abstract: | The transportation of the crude oil produced in offshore oilfields to onshore terminals is performed by vessels, known as shuttle tankers. Scheduling shuttle-tanker operations entails solving complex problems to ensure a timely offloading of the platforms, taking into account several logistics and inventory constraints. This work proposes a new MILP formulation that advances previous works by considering variable travel time between platforms and terminals. The combination of the MILP formulation with an optimization solver constitutes a decision-support tool to aid engineers reach optimal decisions for a planning horizon. To handle large-scale instances, rolling-horizon and relax-and-fix strategies are proposed. |
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| Keywords: | Oil transportation logistics Discrete time Oil production platform Maritime inventory routing MILP Shuttle tankers Rolling-horizon Relax-and-fix |
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