| dc.description.abstract | The oil demand keeps growing worldwide [1]. The oil price keeps changing as the low prices are powering the trend couple of months back but then it raised. The price is relative as it depends on many factors. The Exploration and Production of oil companies to remain competitive in the oil market they need to minimize their production costs. Definitely, the production of oil is a challenging job in terms of production environment and cost but as long as the production methods are being continuously enhanced it won’t be a much expensive process. It shows that even though the price of the oil can swing wildly the growth of demand is surprisingly stable. When just considering the growth in consumption, it is clear that oil remains important at least for next few decades. Although we also need to search for renewable energy source but for time being we simply need everything that we have. So, it concludes oil. Drilling is the primary tool for extracting oil from the subsurface rocks [2]. There are many experiments and studies are done for improvement of drilling technology which will lower the drilling costs and increase the rate of success in finding the oil.
Building the drilling rig and running the drilling process is a challenging and costly job which requires plenty of manpower, money and time. So, optimized practices with highly qualified personnel are mandatory. Before establishing any rig well-planned estimation for rig construction and running practices is important to have a streamlined job without any delay and confusion. Although simulation technique may differ depending upon the size and complexity of the process. But the well-designed simulation program for drilling gives almost an accurate result. So, simulating the whole activities allows driller virtually run drilling activities under different conditions to see how it works. On top of this, the goal of the simulation technique is to ensure that the process will remain safe under stressful or abnormal condition. Hence, the modeling and simulation of the oil drilling activities simplifies the drilling task and helps to estimates the cost, time, and manpower. This also helps to plan all the pre and post production activities so the drilling process can run smoothly without any hindrance.
The main objective of this thesis is to model and simulate oil drilling activities as Discrete Event Systems (DES). To achieve the goal first, the literature study on the oil drilling activities is done to gather all the necessary information, components, manpower etc. related to oil drilling activities. Second, the mathematical model of the oil drilling activities is represented in Petri Net model by using Platform Independent Petri Net Editor 2 (PIPE2). The simulation of overall oil drilling activities can be visualized in Petri Net environment itself. Third, the Petri Netmodel is simulated with General-purpose Petri Net Simulator (GPenSIM) to simulate the drilling activities of each component in more details. Finally, the simulation results are analyzed and drawn a conclusion for better drilling activities. Hence, the modeling and simulation of oil drilling activities facilitate the driller to drill better gaining maximum throughput in finding oil with minimum utilization of time and money. | nb_NO |
