A Model to Select Project Delay Analysis Method in Downstream Oil and Gas Industry: A Case Study

Abstract

Projects are bound by contractual completion dates, and delays necessitate determining liability between parties. Given the varying outcomes of different delay analysis methodologies and the significant contractual implications, selecting an appropriate method is crucial. This study presents a model for selecting optimal delay analysis methods for engineering, procurement, construction, and installation projects in Iran's oil and gas industry. The model evaluates four common methodologies: "As-planned versus As-built," "Impacted As-Planned," "Collapsed As-Built," and "Windows Analysis," each suited to specific project characteristics. The research employs Fuzzy Delphi method for criteria validation and Analytic Hierarchy Process (AHP) for method selection across five project categories.