PT Medco Energi Internasional Tbk, together with its subsidiaries, explores for and produces oil and gas. It operates through six segments: Exploration and Production of Oil and Gas; Services; Power; Chemicals; Trading; and Holding and Related Operations. The company operates production, development, and exploration blocks in Natuna, Sumatra, Kalimantan, Java, and Sulawesi in Indonesia; and holds oil and gas assets in Thailand, Oman, Libya, Yemen, Malaysia, Mexico, and Tanzania. It also engages in the power business; copper and gold mining operations in Sumbawa Island, Nusa Tenggara; and operation of compression station with gas compressors and pipeline facilities in Gunung Megang, South Sumatra. In addition, the company is involved in the production and trade of chemicals, as well as provision of support services for oil and gas activities. The company was formerly known as PT Medco Energi Corporation and changed its name to PT Medco Energi Internasional Tbk in 2000. The company was founded in 1980 and is headquartered in Jakarta, Indonesia. PT Medco Energi Internasional Tbk is a subsidiary of PT Medco Daya Abadi Lestari.