New Recommended Practice 139R-25: Cost Estimate Classification System – As Applied in Decommissioning for the Offshore Petroleum Exploration and Production Industries
The overall purpose of this recommended practice is to provide the offshore E&P industry with a decommissioning definition deliverable maturity matrix that is not provided in 17R-97. It also provides an approximate representation of the relationship of specific design input data and scope deliverable maturity to the estimate accuracy and methodology used to produce the cost estimate. The estimate accuracy range is driven by many other variables and risks, so the maturity and quality of the scope definition available at the time of the estimate is not the sole determinate of accuracy; risk analysis is required for that purpose…



