PT Elnusa Tbk engages in the provision of oil and gas services. It operates through the following segments: Integrated Upstream Oil and Gas Services; Oil and Gas Support Services; and Energy Distribution and Logistics Services. The Integrated Upstream Oil and Gas Services segment provides geophysical and seismic data, oil and gas drilling, and oilfield services. The Oil and Gas Support Services segment offers threading services, open pipe cycle gas turbine pipe trading and manufacturing, data and information on energy and mineral resources management services, oil and gas data management services, and integrated information technology development services. The Energy Distribution and Logistics Services segment focuses storage services, trading, distribution, and marketing of oil and gas products in Indonesia. The company was founded on January 25, 1969 and is headquartered in Jakarta, Indonesia.