Determining Environmentally Superior Decommissioning Options for Hardand Flexible Pipelines

摘要

The decommissioning of offshore fields includes pipelines, flexible flowlines, umbilical lines, and othersubsea infrastructure. Decommissioning decision makers often need to determine the best and mostpracticable options for these structures, including leave-in-place strategies or removal. Collectively,pipelines can be constructed from several different materials, including steel and plastics, and other metals(i.e., stainless steel and copper). This study presents results from several evaluations of pipelines, flowlinesand power cables using state-of the science methods such as NEBA, HHERA, and CEA to support thedetermination of the environmentally superior decommissioning options.