The gas reserves were discovered in the mid-1990s by Atlantic Richfield Co. (ARCO). Tangguh is now operated by BP Berau Ltd. (100% owned by BP) with two other wholly-owned BP subsidiaries - BP Muturi Holdings B.V. and BP Wiriagar Ltd. - giving the company a 37.16% share in Tangguh LNG.
Other Tangguh Partners are:
• MI Berau B.V. (16.30%)
• CNOOC Muturi Ltd. (13.90%)
• Nippon Oil Exploration (Berau) Ltd. (12.23%)
• KG Berau Petroleum Ltd (8.56%)
• KG Wiriagar Overseas Ltd. (1.44%)
• Indonesia Natural Gas Resources Muturi Inc. (7.35%)
• Talisman Wiriagar Overseas Ltd. (3.06%)
Tangguh started production in 2009, just four years after its initial sanction by the Government of Indonesia, and is operating at design capacity with work now ongoing to expand the plant through the addition of a third train (Train 3).