the onshore Wiriagar PSC was officially awarded to Arco by the Government of Indonesia. In August 1994 the first well, Wiriagar Deep-1 (WD-1) was drilled and tested a cumulative gas flow of per day at standard conditions from the very thick Paleocene turbidite sandstones and thin Middle Jurassic sandstone. Stephen Scott, a staff geophysicist who joined the New Venture team in late 1994 provided seismic interpretations both for the onshore Wiriagar and the offshore Bintuni Bay, which were used to finalize the appraisal well location and to refine the regional understanding of the area. The pressure analyses of the WD-1 well, conducted by Larry Casarta and John Marcou, Petroleum Engineer in the team, indicated that the gas accumulation in Wiriagar Deep extends southward to the offshore Occidental's Berau Block. Arco International management approached Occidental and negotiated to farm-in into the Berau PSC. In 1995 Arco, joined later by Kanematsu (KG), farmed-in into the Berau PSC for a combined 60% working interest, and assumed operatorship of the block. In late 1995 Arco drilled the first well in the offshore Berau PSC, Wiriagar Deep-2 (WD-2) as a confirmation well. The well was very successful, encountered much thicker Middle Jurassic sandstone than in WD-1 and it tested gas in the sandstone interval. The success of WD-1 and WD-2 wells were followed by several delineation wells. The exploration activities in the area confirmed the presence of another NW-SE anticlinal structure in the Berau PSC to the east of Wiriagar Deep structure. In late 1996, the first well, Vorwata-1, was drilled in this structure and tested 31 MMSCF/D from Middle Jurassic Roabiba sandstone reservoir. The New Venture team under the leadership of Suherman as the New Venture manager and John Duncan as Arco Indonesia Exploration Vice President prepared and executed the Wiriagar Deep and initial Vorwata appraisal program. The Wiriagar Deep and Vorwata fields were the main fields that constituted the Tanggguh gas project, with Vorwata field initially providing the gas that fed the Tangguh LNG plant in 2009. In early 1998 the New Ventures team handed over the Tangguh project to the certification team who continued the Vorwata field appraisal program. The New Venture team continued to work studying the regional geology and evaluating block opportunities in the focus areas of Eastern Indonesia and NW Australian Shelf. Overcoming obstacles Arco approached the rest of the KBSA partnership in late 1991 with a recommendation to