This paper will discuss an assessment of current industry practice with respect to decommissioning requirements for offshore pipeline flushing and purging operations — specifically addressing corrosion and cleanliness in out-of-service and decommissioned offshore pipelines. The results, observations, and conclusions will also be discussed, from the ongoing research project entitled “Assessment of Current Pipeline Flushing and Decommissioning Requirements - Research and Field Testing Phase A” that was funded through the Technology Assessment & Research (TAR) Program of the U.S. Minerals Management Service. Data collected during this study has specific application to regulation and effectiveness of industry practice for future pipeline and flowline flushing, purging, and decommissioning. The main applications from this research are: 1) Understanding how a pipeline corrodes while out of service; 2) Determining whether the line is fit for service for possible reuse; and 3) Determining the cleanliness of decommissioned offshore oil and gas pipelines. The study results will lead to a more in-depth understanding of the condition of out-of-service and decommissioned pipelines as well as an improved public perception of the use and reuse of submerged pipelines for oil and gas activities on the Outer Continental Shelf of the United States.

This content is only available via PDF.
You do not currently have access to this content.