Publications

South Obi basin is an underexplored area located in the southwestern part of the Birds Head region in Eastern Indonesia. The basin is located in an area where several tectonic plates meet (Australian, Philippine and Eurasian plate). During Neogene active tectonics dominated the Birds Head region. Strike-slip motion occurred along Sorong fault zone since 25 Ma created transpressional and transtensional structures. The South Obi basin was created during this time as a pull-apart basin developed along Sorong fault zone. There are indications of a petroleum system in the South Obi basin based on the study and seismic interpretation. The Anggai and Fluk formations, equivalent to the Miocene Kais carbonate formation, are potential reservoirs in South Obi basin. A potential source rock in the South Obi basin is the Amasing formation, equivalent to the Klasafet formation in the Salawati Basin. The Pleistocene Klasaman formation is likely a major sealing unit in the South Obi basin. 3D seismic interpretation and regional study of the South Obi basin indicates several potential structures with Miocene carbonates. Some potential gas chimneys were observed and support the possible presence of thermogenic hydrocarbons in the South Obi basin.