Understanding Project Phases in Oil & Gas Industry

Complete life cycle of Oil & Gas Project

Understanding Project Phases in Oil & Gas Industry
Understanding Project Phases in Oil & Gas Industry

Understanding Project Phases in Oil & Gas Industry udemy course

Complete life cycle of Oil & Gas Project

This section provides a structured overview of the complete lifecycle of an Oil & Gas project, from initial feasibility analysis to final commissioning and startup. Learners will explore how major phases like conceptual design, FEED, detailed engineering, procurement, construction, and commissioning are organized and executed within the industry.

Each phase will be discussed in terms of its objectives, key deliverables, and the departments or stakeholders involved. This module is essential for engineering professionals, project managers, and students who want to understand how large-scale energy projects are planned and delivered in real-world scenarios.


A clear understanding of the different project phases is crucial for successful project planning, coordination, and delivery. In this section, you’ll gain a holistic view of how multidisciplinary teams contribute across different timelines to bring a complex industrial project to life.

Whether you are just starting your career or managing large projects, this knowledge will help you align with industry best practices and understand where your role fits in the bigger picture.


1. Introduction to Project Lifecycle in Oil & Gas

  • Definition of a project phase vs. a project stage

  • Importance of structured project execution for large-scale energy projects

2. Major Phases of an Oil & Gas Project

  • Feasibility Check

  • Conceptual Design

  • Pre-FEED (Preliminary Front End Engineering Design)

  • FEED (Front End Engineering Design)

  • Detailed Engineering Phase

  • Procurement Phase

  • Fabrication & Construction Phase

  • Erection & Installation

  • Pre-commissioning

  • Commissioning

  • Start-up Phase

Each phase will be covered in terms of:

  • Purpose

  • Common deliverables (e.g., PFDs, P&IDs, material requisitions)

  • Key engineering or project activities performed

3. Mapping Project Phases to Project Stages

  • Grouping of phases under broader project execution stages:

    • Development Stage

    • Execution Stage

    • Operational Readiness

    • Handover and Startup

4. Practical Examples and Industry Insights

  • Case-based discussions on:

    • Typical deliverables in a FEED study

    • Role of EPC contractors in detailed design and construction

    • Importance of documentation in pre-commissioning and handover

    • Coordination challenges during commissioning and startup