Ownership: Woodside Energy (90%) Tokyo Gas (5%) Kansai Electric (5%)
Block/License: WA-350-P, WA-34-L
Along with the Pluto gas field, the Xena gas field underpins the Pluto LNG Project in the Carnarvon Basin, offshore WA. Located on permit WA-350-P and license WA-34-L, the Xena gas field was discovered in September 2006. The Jack Bates semi-submersible drilled the Xena-1ST1 exploration well to a total depth of 11,450 feet. About six kilometres east of the Pluto-2 appraisal well, in 584ft of water, the Xena discovery well encountered a gas column of 161ft in good-quality reservoir sandstones. In the first quarter of 2008, two appraisal wells were drilled on the Xena field by the Ocean Bounty semi-submersible. The Xena-2 and Xena-3 wells confirmed the field and established the presence of gas-saturated sands in another fault block. Xena was estimated to contain 600 billion cubic feet of recoverable dry gas. The initial phase of the Pluto LNG Project would be comprised of an offshore platform in 85 metres of water connected to five subsea wells on the Pluto gas field. Gas would be piped in a 180km trunkline to the onshore facility between the North West Shelf Project and the Dampier port, on the Burrup Peninsula. Onshore infrastructure would be comprised of a single LNG processing train with a forecast production capacity of 4.3 million tonnes per annum. Storage and loading facilities at the plant would include two LNG tanks with a combined capacity of 240,000 cubic metres, three smaller condensate tanks and an LNG and condensate export jetty. The total area of the Pluto leases for the onshore facility is about 200 hectares, of which the plant and associated infrastructure will cover about 80ha. The Pluto LNG Project was underpinned by 15-year sales agreements with Kansai Electric and Tokyo Gas. The first LNG cargo from Pluto was estimated for March 2012.