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A solution framework for the integrated problem of cargo assignment, fleet sizing, and delivery planning in offshore logistics

2021; Elsevier BV; Volume: 161; Linguagem: Inglês

10.1016/j.cie.2021.107653

1879-0550

Gustavo Cunha de Bittencourt, Rennan Danilo Seimetz Chagas, Victor Anselmo Silva, Igor Girão Peres Vianna, Rafael Pedro Longhi, Paulo César Ribas, Virgílio José Martins Ferreira Filho,

Urban and Freight Transport Logistics

In order to support deep-sea oil and gas exploration and production operations, platform supply vessel plays a critical role, being the main transport resource to meet the demand of supplies ordered by maritime units. This leads to problems in efficiently allocating supplies to vessels and cost-effectively assessing the fleet size. Aiming to solve these problems, we propose a framework based on the integration of a mixed-integer programming model, which selects the supply set each vessel should provide, and a discrete-event simulator, which realistically represents the offshore operation scenario. We evaluate different fleet management policies, such as distinguishing parts of a fleet with respect to commodity type and multi-commodity transportation. In addition, we analyze the cargo allocation and vessel assignment along scheduled trips, comparing the traditional first-in-first-out delivery strategy with a completely optimization-centered alternative. Our study presents good-quality solutions that can potentially enhance offshore service levels, reduce fleet requirement, and decrease operational costs. We also demonstrate that our framework promotes a further step for improving the current logistics practices of a major oil company operating in Brazilian oil and gas offshore basins.