Subsea Pipeline Remnant Life Assessment

Many of the pipelines either offshore or onshore are nearing the end of their design life. Some of the pipelines show signs of deterioration and ageing as a result of corrosion and fatigue. There are situation where the operators desire to extend the life of an ageing pipeline beyond its life expectancy due to increased oil and gas demand or due to unforeseen increased oil and gas reserve. Other situations that force the operators to maintain the pipeline’s design life are the premature ageing of the pipe caused by the increased time-dependent deterioration.

The key objective of the business for any oil and gas operator is to have a pipeline system that performs the intended function in a safe and cost effective manner.

The objective of this research is to develop a structured and probabilistic model to assess and predict the useful and safe remaining life of subsea pipeline system. Applying this model will insure that the pipeline will perform satisfactorily, (i.e. complying with codes, maintaining integrity, etc.) and in line with predefined operating conditions.

This research project was undertaken and completed with a grant from and the financial assistance of Petroleum Research Newfoundland & Labrador.

Faculty Supervisor:

Drs. Faisal Khan & Ayhan Akinturk


Alireda A. Aljaroudi







Memorial University of Newfoundland



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