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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

Sistema de sensoriamento eletromagn?tico utilizado para detec??o da contamina??o do ?leo isolante do motor no m?todo de eleva??o artificial do tipo bombeio centr?fugo submerso

Quintaes, Filipe de Oliveira 25 February 2010 (has links)
Made available in DSpace on 2014-12-17T14:09:12Z (GMT). No. of bitstreams: 1 FilipeOQ_TESE.pdf: 3544001 bytes, checksum: a41be36b03f0fc409d26c8565085c60f (MD5) Previous issue date: 2010-02-25 / In the artificial lift method by Electrical Submersible Pump (ESP), the energy is transmitted for the well?s deep through a flat electric handle, where it is converted into mechanical energy through an engine of sub-surface, which is connected to a centrifugal pump. This transmits energy to the fluid under the pressure form, bringing it to the surface In this method the subsurface equipment is basically divided into: pump, seal and motor. The main function of the seal is the protect the motor, avoiding the motor?s oil be contaminated by oil production and the consequent burning of it. Over time, the seal will be wearing and initiates a contamination of motor oil, causing it to lose its insulating characteristics. This work presents a design of a magnetic sensor capable of detecting contamination of insulating oil used in the artificial lift method of oil-type Electrical Submersible Pump (ESP). The objective of this sensor is to generate alarm signal just the moment when the contamination in the isolated oil is present, enabling the implementation of a predictive maintenance. The prototype was designed to work in harsh conditions to reach a depth of 2000m and temperatures up to 150?C. It was used a simulator software to defined the mechanical and electromagnetic variables. Results of field experiments were performed to validate the prototype. The final results performed in an ESP system with a 62HP motor showed a good reliability and fast response of the prototype. / No m?todo de eleva??o artificial de petr?leo por Bombeio Centr?fugo Submerso (BCS) a energia el?trica ? transmitida para o fundo do po?o atrav?s de um cabo, onde ? transformada em energia mec?nica por um motor de sub-superf?cie, o qual est? conectado a uma bomba centr?fuga, que transmite a energia para o fluido sob a forma de press?o, elevando-o para a superf?cie. Neste m?todo, os equipamentos de sub-superf?cie subdividem-se basicamente em: bomba, selo e motor. A principal fun??o do selo ? a prote??o do motor, evitando a contamina??o do ?leo do motor pelo ?leo de produ??o e a conseq?ente queima do mesmo. Com o tempo, o selo vai desgastando-se e come?a haver uma contamina??o do ?leo do motor, fazendo com que o mesmo perca a sua caracter?stica isolante. Este trabalho apresenta um projeto de um sensor magn?tico capaz de detectar a contamina??o do ?leo isolante utilizado no m?todo de eleva??o artificial de petr?leo do tipo (BCS). O objetivo deste sensor ? gerar um sinal de alarme apenas no momento em que a contamina??o do ?leo isolante estiver presente, possibilitando ? execu??o de uma manuten??o preditiva. O prot?tipo foi projetado para trabalhar em condi??es operacionais severas, podendo alcan?ar uma profundidade de 2000m e temperaturas at? 150?C. Foi utilizado um software simulador para definir as vari?veis mec?nicas e eletromagn?ticas. Experimentos de campo foram realizados para validar o prot?tipo. Os resultados finais realizados em um sistema BCS com um motor de 62HP mostrou uma boa confiabilidade e resposta r?pida do prot?tipo.

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