Optimization of maintenance strategy for power generation on satellite gas platforms

Optimization of maintenance strategy for power generation on satellite gas platforms

Haans, R.P.

Godjevac, M. (mentor)

Mechanical, Maritime and Materials Engineering

Secretary of the section Offshore and Dredging Engineering Secretary of the section Ship Design, Production and Operations Maritime and Transport Technology Department (M&TT)

Offshore Engineering

2016-03-29

Declining production, continuously rising cost levels, low oil prices and the subsequent declining reserves, are forcing the oil and gas industry to reduce its operating expenditures. This study focuses on how the best maintenance policies for the power generation on unmanned satellite gas platforms of Total Exploration and Production Netherlands can be found. The research question is stated as follows: "What is the optimal maintenance interval for power generation on a satellite gas platform to maximize net income?" To answer the research question, a reliability model, based on a published model, has been designed. The model assumes a continuously degradation of technical system. A published model for parameter assessment of a maintained technical system is used to estimate the failure behavior of the technical system. Consequently, the maintenance actions that can be done on the technical system are assessed by defining two improvement parameters. These assess the executing time and define the maintenance related costs. A decision model determines what preventive maintenance action is most cost efficient, while maintaining a specified minimum reliability level. A case study on two satellite gas platforms is carried out. The two platforms differ significantly in daily production. As a result, the low producing gas platform has more potential to reduce costs than the high producing platform. The low producing platform needs to decrease its maintenance activities significantly to reduce cost, while the high producing platform needs a high minimum reliability level in order to avoid too much downtime. This research provides a scientific basis to determine whether the production rate of an asset is low enough to reduce the maintenance activities that are in place. It's recommended by the author to focus more on cause of failure in corrective maintenance logging. Also, the study needs to be repeated in more detail to get a better understanding of the technical systems. Lastly, the research has to be done on all mechanical systems that have to be included in the ``long fix'' interval to determine whether a save in costs of logistics can be made.

Maintenance

http://resolver.tudelft.nl/uuid:2bc84158-936c-4fa6-88de-69394c43967c

2019-03-28

Student theses

master thesis

(c) 2016 Haans, R.P.