Total has announced that the first phase of the Sisi-Nubi gas fields offshore East Kalimantan in Indonesia has come on stream.

Lying roughly 25 kilometers from the Mahakam Delta in 60 to 90 meters water depths, the two fields are located in the Total-operated Mahakam and Tengah blocks.

The first phase development of Sisi-Nubi includes the installation of three wellhead platforms, a reception facility and a subsea pipeline gathering network, which were all completed on schedule and within budget. Gas and condensate is then sent to the existing Tunu processing centre. From there gas is then piped to the Bontang LNG plant and condensates to the export terminal at Senipah.

Both fields are characterized by multiple layers of poorly consolidated sands, and the 27 development wells to be drilled to complete phase one require advanced drilling techniques. Development drilling started in September 2007 and will enable to reach production plateau of some 350 million cubic feet per day within the next 18 months.