POTENSI MIGAS BERDASARKAN INTEGRASI DATA SUMUR DAN PENAMPANG SEISMIK DI WILAYAH OFFSHORE CEKUNGAN TARAKAN KALIMATAN TIMUR
Abstract
Hasil akhir kajian dari integrasi peta struktur kedalaman dan peta isopach serta dukungan data petrofisik dari aspek kualitas batuan reservoir diperoleh dua lokasi yang berpotensi migas: Potensi Migas-1 di bagian tenggara dekat Pulau Tarakan merupakan jebakan struktur antiklin yang dikontrol sesar-sesar inversi dan Potensi Migas-2 di lepas pantai bagian timur wilayah kajian berupa jebakan struktur hidrokarbon sebagai sebuah antiklin yang memanjang relatif arah SEE – NWW.
Kata kunci: Tarakan, sekuen, seismik, potensi migas
Study of Petroleum geology in the Tarakan Basin is relatively less than in the Kutai Basin such as detailed and comprehensively sequence stratigraphy, variation of sediment layering from transition to outer-neritic zone and its related to determination of oil and gas potential locations. Oil and gas exploration in Tarakan Basin, East Kalimantan, has been carried out for the last a hundred years ago and its include as the oldest basin in Indonesia. Unfortunately, oil and gas field in eastern part of offshore Tarakan Island has not yet been discovered significantly. In contrast, offshore and deep-water oil and gas fields of Kutai Basin has been discovered significantly i.e. West Seno and Gendalo Fields. Based on data of 2D seismic in SEGY-files, well log in LAS-file, biostratigraphy and check-shot data, then steps of research followed by a sequence analysis, wells correlation, interpretation and analysis of seismic stratigraphy, subsurface mapping and determination of oil and gas potential locations.
The results of this study are oil and gas potency 1 and potency 2. Potency 1 is located in south-eastern part of Tarakan Island where anticlinal traps are controlled by inversion faults. In contrast, potency 2 is an anticlinal trap located in offshore at the eastern part of the study area.
Key words: Tarakan, sequence, seismic, oil and gas potential
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PDF (Bahasa Indonesia)DOI: http://dx.doi.org/10.32693/jgk.10.3.2012.221