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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Um estudo algor?tmico da programa??o da interven??o de sondas de produ??o

Sabry, Gustavo de Araujo 27 February 2012 (has links)
Made available in DSpace on 2014-12-17T15:48:00Z (GMT). No. of bitstreams: 1 GustavoAS_DISSERT.pdf: 3060399 bytes, checksum: 659289bc757f2443a1b6902094747b13 (MD5) Previous issue date: 2012-02-27 / This work approaches the Scheduling Workover Rigs Problem (SWRP) to maintain the wells of an oil field, although difficult to resolve, is extremely important economical, technical and environmental. A mathematical formulation of this problem is presented, where an algorithmic approach was developed. The problem can be considered to find the best scheduling service to the wells by the workover rigs, taking into account the minimization of the composition related to the costs of the workover rigs and the total loss of oil suffered by the wells. This problem is similar to the Vehicle Routing Problem (VRP), which is classified as belonging to the NP-hard class. The goal of this research is to develop an algorithmic approach to solve the SWRP, using the fundamentals of metaheuristics like Memetic Algorithm and GRASP. Instances are generated for the tests to analyze the computational performance of the approaches mentioned above, using data that are close to reality. Thereafter, is performed a comparison of performance and quality of the results obtained by each one of techniques used / O trabalho em quest?o aborda o Problema da Programa??o das Sondas de Produ??o (PPSP) para atender os po?os de um campo de petr?leo. Embora de dif?cil resolu??o, ele ? de extrema import?ncia econ?mica, t?cnica e ambiental. Uma formula??o matem?tica deste problema ? apresentada, assim como desenvolvida uma abordagem algor?tmica. O problema abordado pode ser considerado como o de encontrar o melhor escalonamento de atendimento aos po?os pelas sondas, levando em considera??o a minimiza??o da composi??o dos custos relativos ?s sondas e da perda total da produ??o de petr?leo associada aos po?os que est?o aguardando por atendimento. Tal problema assemelha-se ao Problema de Roteamento de Ve?culos (PRV), que ? classificado como pertencente ? classe de problemas NP-Dif?cil. O objetivo da presente pesquisa ? desenvolver uma abordagem algor?tmica para resolver o PPSP, utilizando os fundamentos de metaheur?sticas como o Algoritmo Mem?tico e o GRASP. Inst?ncias s?o geradas para a realiza??o dos testes computacionais para an?lise do desempenho das abordagens acima citadas, utilizando dados que se aproximam da realidade. A partir da?, ? realizada uma compara??o de desempenho e qualidade dos resultados obtidos por cada uma das t?cnicas utilizadas

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