Supplementary data - Subsea pipelines synthetic data

In this study, we apply the bootstrapping technique to generate a synthetic dataset for validation based on the description and evaluation of 14 pipelines in SHELL (2017) report. This dataset with 1313 synthetic pipelines was made public for benchmarking purposes. we selected the following parameters of sub-sea ducts: diameter; length; concrete, steel and coat composition; weight; fluid; proximity to other infrastructure (number of crossings); installation date; cleaning type and on bottom status. In addition, it also included the evaluation of each of the seven alternatives (A1 - Leave in situ with no further remediation required; A2- Leave tied-in at platform; remote and trenched; A3 - Leave tied-in at platform, remote and rock-dumped; A4 - Trench and backfill whole length; A5 - Rock-dump whole length; A6 - Recover whole length by cut and lift; A7 - Recover whole length by reverse S-lay) with respect to each of the twelve sub-criteria (C1 - Safety risk to offshore project personnel; C2 - Safety risk to other users of the sea; C3 - Safety risk to onshore project personnel; C4 - Operational environmental impacts; C5 - Legacy environmental impacts; C6 - Energy use; C7 - Emissions; C8 - Technical feasibility; C9 - Effects on commercial fisheries; C10 - Employment; C11 - Communities; C12 - Cost. From column M, it is shown the evaluation of each criteria for each alternative given by XiAj, where i and j represents, respectively, sub-criteria and alternatives.

Reference
Shell, 2017. Brent field pipelines decommissioning technical document. Technical Report February. Shell UK Limited. UK.