The oil and gas industry encompasses a wide range of activities across the entire business cycle, from upstream exploration and production to downstream refining and distribution.
Health, Safety, and Environment (HSE) are three essential disciplines within the industry. While each area involves its own technologies and practices, they are often managed under a unified function within oil and gas companies. Adherence to HSE principles is a fundamental requirement for operators worldwide and is reinforced by the internal policies of most organizations.
A key element of effective HSE management is the implementation of an HSE Management System (HSEMS), which establishes the framework for conducting operations safely, managing risks, and ensuring compliance throughout the industry value chain.

The health function focuses on protecting and promoting the well-being of employees in their working and living environments. It aims to prevent adverse health effects resulting from operational activities while supporting employee wellness. In the oil and gas industry, health management often addresses exposure to oilfield chemicals and physical workplace conditions.

The safety function is dedicated to protecting personnel from risks associated with operational activities and job tasks. It is based on the principle that all injuries are preventable and promotes a strong culture of safety awareness, responsibility, and discipline throughout the organization. Safety management seeks to identify hazards, reduce risks, and continuously monitor the effectiveness of risk control measures.

The environmental function focuses on minimizing the impact of oil and gas operations on natural resources and ecosystems. Environmental management aims to reduce emissions, wastewater, and waste generation while working toward long-term sustainability goals. It supports the delivery of products and services in a manner that avoids environmental harm, protects affected ecosystems, and promotes the efficient use of natural resources and energy.