Petrofac Ltd. is an investment holding company which, through its subsidiaries, provides services to the international oil and gas production and processing industry. It operates through the following segments: Onshore Engineering and Construction; Offshore Projects and Operations; Engineering and Consulting Services; and Integrated Energy Services. The Onshore Engineering and Construction segment provides engineering, procurement, and construction project execution services to the onshore oil and gas industry. The Offshore Projects and Operations segment handles offshore engineering, operations, and maintenance services for the offshore oil and gas industry. The Engineering and Consulting Services segment offers technical engineering, consultancy, conceptual design, front-end engineering and design (FEED), and project management consultancy (PMC) across all sectors including renewables and carbon capture. The Integrated Energy Services segment provides production improvement services under value aligned commercial structures and oil and gas related technical competency training and consultancy services. The company was founded in 1981 and is headquartered in London, the United Kingdom.