Functional Requirements and Concepts of Frequency Converter's Oil Application Control Program
Teräväinen, Joel Veikko (2015)
Teräväinen, Joel Veikko
2015
Sähkötekniikan koulutusohjelma
Tieto- ja sähkötekniikan tiedekunta - Faculty of Computing and Electrical Engineering
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Hyväksymispäivämäärä
2015-06-03
Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:tty-201505181285
https://urn.fi/URN:NBN:fi:tty-201505181285
Tiivistelmä
The majority of exploited oil reservoirs in the world need some form of artificial lifting to transfer crude oil to the surface. Progressing cavity pumps and electric submersible pumps are two methods commonly used to do this. These pumps are able to pump from relatively small to very large amounts, thus being suitable for many different applications. This thesis studies control functionality requirements occurred among customers operating with these pumps in oil fields. Requirements are examined and designing concepts discussed. The aim is to determine how the existing application control program used with ABB's ACS880 industrial variable frequency converter could be improved so that it meets the customer requirements and responds to the market situation effectively.
In this thesis, functionality requirements were inquired from ABB sales and marketing persons who collect information directly from customers. In addition to that, the main competitors of ABB in the field of artificial oil lifting were analysed. Order of priorities and guidelines for requested functionalities were then formed based on the collected information. The most requested topics were related to functionalities reducing the amount of sensors needed in the system. This means that the program should be able to make estimations based mainly on motor behaviour. Production monitoring possibilities and better sand cleaning functions were also widely requested. In addition to these, the monitoring of a motor's acceleration in order to detect a stuck pump was seen as an important enhancement, as was detecting gas pockets down in the well.
To add new requested functionalities to the control program, pump and reservoir conditions need to be modelled better. In some cases, a lot of practical testing is also required, but monitoring improvements, for example, can be done with small modifications to the current program. Designing at least the most requested functionalities would give a good competitive edge over the main competitors.
In this thesis, functionality requirements were inquired from ABB sales and marketing persons who collect information directly from customers. In addition to that, the main competitors of ABB in the field of artificial oil lifting were analysed. Order of priorities and guidelines for requested functionalities were then formed based on the collected information. The most requested topics were related to functionalities reducing the amount of sensors needed in the system. This means that the program should be able to make estimations based mainly on motor behaviour. Production monitoring possibilities and better sand cleaning functions were also widely requested. In addition to these, the monitoring of a motor's acceleration in order to detect a stuck pump was seen as an important enhancement, as was detecting gas pockets down in the well.
To add new requested functionalities to the control program, pump and reservoir conditions need to be modelled better. In some cases, a lot of practical testing is also required, but monitoring improvements, for example, can be done with small modifications to the current program. Designing at least the most requested functionalities would give a good competitive edge over the main competitors.