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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

Estudo de modelos ARIMA com variáveis angulares para utilização na perfuração de poços petrolíferos. / Study of ARIMA models with angular variables for use in the drilling of oil wells.

SILVA, Areli Mesquita da. 16 July 2018 (has links)
Submitted by Johnny Rodrigues (johnnyrodrigues@ufcg.edu.br) on 2018-07-16T19:54:29Z No. of bitstreams: 1 ARELI MESQUITA DA SILVA - DISSERTAÇÃO PPGMAT 2007..pdf: 701919 bytes, checksum: 78ea7b65513f1fe6d83acdb4f3030b43 (MD5) / Made available in DSpace on 2018-07-16T19:54:29Z (GMT). No. of bitstreams: 1 ARELI MESQUITA DA SILVA - DISSERTAÇÃO PPGMAT 2007..pdf: 701919 bytes, checksum: 78ea7b65513f1fe6d83acdb4f3030b43 (MD5) Previous issue date: 2007-07 / Séries temporais envolvendo dados angulares aparecem nas mais diversas áreas do conhecimento. Por exemplo, na perfuração de um poço petrolífero direcional, o deslocamento da broca de perfuração, ao longo da trajetória do poço, pode ser considerado uma realização de uma série temporal de dados angulares. Um dos interesses, neste contexto, consiste em realizar previsões de posicionamentos futuros da broca de perfuração, as quais darão mais apoio ao engenheiro de petróleo na tomada de decisão de quando e como interferir na trajetória de um poço, de modo que este siga o curso planejado. Neste trabalho, estudamos algumas classes de modelos que podem ser utilizados para a modelagem desse tipo de série. / Time series involving angular data appear in many diverse areas of scientific knowledge. For example, in the drilling of a directional oil well, the displacement of the drill, along the path of the well, can be considered as an angular data time series. One of the objectives, in this context, consists in carrying out forecasts of the future positions of the drill, which will give more support to the petroleum engineer in the decision-making of when and how interfere in the path of a well, so that this follows the planned course. In this work, we study some classes of models that can be utilized for the modeling of that kind of series.

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