Oil & gas rigs are specialized industrial structures used to drill wells and access underground oil and natural gas reservoirs on land and offshore. They include mobile land rigs, shallow-water units, deep-water floating systems, and permanent offshore platforms, each designed to operate under specific geological, water-depth, and environmental conditions. Together, these rig types enable exploration, drilling, development, and long-term production across the entire upstream oil and gas industry.

The oil and gas industry is one of the most "capital-intensive" sectors in the world. Decisions regarding these goods and materials are highly sensitive to global oil prices; when prices drop, companies often slash their budgets for new capital goods while maintaining only the essential materials needed for existing operations.

Strategic & Corporate Spend covers administrative, professional, and support services that enable smooth corporate governance, compliance, and business continuity. Although not directly linked to field operations, these services are critical for risk management, regulatory adherence, and organizational efficiency.