Upstream Offshore-Facility Weight-Growth Study

Abstract

On the basis of our analysis and observations of projects in the database provided by Independent Project Analysis (IPA), one-half of topsides have more than 10% weight growth from authorization to completion, and more than one in three substructures have more than 10% weight growth from authorization to completion. Meanwhile, estimated contingency has a much narrower range compared with actual required contingency. To help the industry understand offshore-facility weight predictability, IPA recently conducted a comprehensive study that sheds new light on facility weight performance and identifies the root causes of weight growth, providing guidelines for improving predictability.