Publications

Ubadari is an undeveloped shallow-water gas discovery in the western part of Bintuni Bay, West Papua, Indonesia. The field will be developed in Phase 2 of the bp Tangguh Expansion Project, feeding a new LNG train. Two platforms are planned to be placed, and a Jack-up rig will be used for drilling. It is known that seabed and shallow geology are complex in Bintuni Bay and especially in Ubadari. However, no legacy data with adequate seismic resolution were available before 2016 in Ubadari. Hence, to support the development, a comprehensive, field-wide, suite of high-resolution shallow geophysical data (MBES, SSS, Pinger, 2D Multi-channel Sparker and 3D High Resolution Seismic) was acquired in 2016. In addition, a geotechnical borehole survey was acquired in 2017. The shallow datasets reveal the highly variable soils, moderate to high seismicity including liquefaction risk and widely distributed shallow gas in this field. This field is also surrounded by shallow water area. All of these contribute to the degree of challenge for the jack-up rig and platform placement. Bp's main strategy within Bintuni Bay has always been to find the safest location for infrastructure and drilling programs by identifying and then avoiding, where possible, known hazardous conditions. In 2020, the integrated ground model project which includes geophysical, geological, and geotechnical data was completed using 2016 high-resolution shallow dataset. It reveals a wealth of shallow stratigraphic and structural features that had not been identified before, allowing the delivery of detailed geohazard and risk identification.