Planning and scheduling a fleet of rigs using simulation–optimization

A heuristic approach to stowing general cargo into platform supply vessels

“…We do not refer to the planning of the exploratory assets, but rather to the role of the offshore support vessels in the process of extracting and processing oil and natural gas (readers interested in the planning and scheduling of offshore drilling rigs can refer to Bassi et al (2012)). Nor have we considered worker and crew transportation, which has been mostly carried out by helicopters (Menezes et al, 2010;Qian et al, 2011).…”

“…Production platforms are towed, anchored and connected to the subsea equipment, thus allowing production to begin. During the lifespan of oil fields, maintenance vessels will be requested for preventive and corrective actions of the subsea infrastructure (El-Reedy, 2012), which will be accomplished by means of diving or by a remotely operated underwater vehicle (ROV); moreover, wells might require maintenance interventions by stimulation vessels or workover rigs in order to maintain or improve productivity (Bassi et al, 2012). Finally, during the entire period offshore units will rely on platform supply vessels (PSVs) (Aas et al, 2009), which are ships specially designed to transport supplies to offshore oil platforms and to return used equipment and items to shore for recycling and disposal.…”

“…In this context, an effective response to the demand for supply items of drilling rigs and production platforms is a key issue in contemporary offshore logistics. Bassi et al (2012) point out that some of the most important and expensive activities during the oil field development and production phases relate to the use of rigs for drilling wells or for maintenance activities. These are expensive assets, representing daily hire rates of up to US$600 000 (Bassi et al, 2012;Kaiser and Snyder, 2013).…”

“…Bassi et al (2012) point out that some of the most important and expensive activities during the oil field development and production phases relate to the use of rigs for drilling wells or for maintenance activities. These are expensive assets, representing daily hire rates of up to US$600 000 (Bassi et al, 2012;Kaiser and Snyder, 2013). Hence, oil companies cannot have their operations jeopardized because of supply delays or shortages.…”

Optimizing Workover Rig Fleet Sizing and Scheduling Using Deterministic and Stochastic Programming Models

“…Bissoli et al 18 incorporated rig rental cost into the mathematical model proposed by Ribeiro et al 13 and implemented an adaptive large neighborhood search metaheuristic. The first use of a stochastic approach was described by Bassi et al, 19 who considered the probability distribution of the intervention time and analyzed the trade-off between rig rental cost and the expected cost of lost production. They developed a simulation–optimization method that involved sampling the uncertain parameter (generating scenarios) with the Monte Carlo method and then solving the problem using a greedy algorithm.…”