Execution Phase’s Integrity Model of the Offshore Facility Project

Abstract

With using existing methods of change management for large projects, it is often not possible to track the full list of the results of making changes to a project, for example, an increase the total weight and overall dimensions of separate units. In the case of offshore oil and gas facilities (OF), this makes it impossible to locate the equipment in the available area and necessitates a new calculation, changing the piping, and complicate access to the equipment. As a result, the deadlines for completion of the facility are postponed and the total cost is increased, there is a need for a special order for equipment with higher prices.This research presents a project execution model (PEM), which considers the detailed composition and sequence of project stages and works in the OF life cycle, which are formed based on analogues - previously executed projects and developed completion criteria of works and project stages. It is proposed to integrate PEM with the methodology of digital engineering data management (DEDM), which contains an information model (IM) of the facility with created interconnections of the technical parameters of equipment units or total process unit. The DEDM allows generating information on the number and scale of deviations in a technical project after making changes to it in an automated mode, which significantly increases the rationality and accuracy of decision making. The result is a tool for the operator departments and contracting companies involved in the design and construction of the OF, which makes it possible to more accurately plan project costs, timelines for its execution and minimizes costs at various stages of the facility’s life cycle.