Publications

Silva, L.M.R., Teixeira, A.P. and Guedes Soares, C. (2019), “A methodology to quantify the risk of subsea pipeline systems at the oilfield development selection phase”, Ocean Engineering, Vol. 179, pp. 213-225

The paper proposes a risk assessment methodology to be applied at the design selection phase of an oilfield development. The main objective of the approach is to support the decision makers in the selection process of the development concept of an oilfield based on risk considerations. The methodology assesses the risk level of a pipeline system identifying the pipeline groups contributing the most to the risk during the operating life of the system. The risk level of the pipeline systems at the design selection phase enables the decision makers to rank the alternative scenarios in terms of risks/expected losses. The proposed methodology is applied to four alternative oilfield development concepts according to the decision variables adopted for each production system. The results of the risk assessment methodology provide relevant knowledge on the weaknesses of the pipeline systems and subsystems, reducing the inherent uncertainties to develop an oilfield at the design phase. Furthermore, the methodology reduces the time and effort required to conduct a full Quantitative Risk Analysis (QRA) for all alternative design concepts.

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