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All Journal METAMORFOSA Journal of Biological Sciences Bionatura Bulletin of Scientific Contribution : Geology Indonesian Journal of Applied Sciences AL KAUNIYAH IJOG : Indonesian Journal on Geoscience Jurnal RISET Geologi dan Pertambangan Dharmakarya : Jurnal Aplikasi Ipteks Untuk Masyarakat Geoscience Journal Jurnal Geocelebes Journal of Geoscience, Engineering, Environment, and Technology Jurnal Geologi dan Sumberdaya Mineral (Journal of Geology and Mineral Resources) JLBG (Jurnal Lingkungan dan Bencana Geologi) (Journal of Environment and Geological Hazards) BULLETIN OF THE MARINE GEOLOGY Jurnal Geosains dan Teknologi Jambura Geoscience Review Indonesian Journal on Geoscience Indonesian Journal on Geoscience Jurnal Geologi dan Sumberdaya Mineral (Journal of Geology and Mineral Resources) Journal of Geosciences and Applied Geology Scientific Contributions Oil and Gas
Winantris Winantris
Fakultas Teknik Geologi, Universitas Padjadjaran
Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Immunology & microbiology Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Physics Public Health

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Journal : Indonesian Journal on Geoscience

 1 
Eo-Oligocene Oil Shales of the Talawi, Lubuktaruk, and Kiliranjao Areas, West Sumatra: Are they potential source rocks? Iqbal, M.; Suwarna, Nana; Syafri, Ildrem; Winantris, Winantris
Indonesian Journal on Geoscience Vol 1, No 3 (2014)
Publisher : Geological Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17014/ijog.1.3.135-149

Abstract

DOI:10.17014/ijog.v1i3.198To anticipate the increasing energy demand, additional data and information covering unconventional fossil fuels such as oil shale must be acquired to promote the usage of alternative energy sources to crude oil. The Talawi and Lubuktaruk regions situated within intra-montane Ombilin Basin, and the Kiliranjao assumed to be a small intra montane basin are occupied by Eo-Oligocene sediments of Sangkarewang and Kiliran Formations, respectively. Field activity, geochemical screening techniques, and organic petrographic analysis, supported by SEM mode, are methods used. Most of the oil shale sequence is typically of an organically rich-succession comprising predominantly well-bedded, laminated and fissile, brownish to dark grey organic-rich shale and mudstone rocks. The exinite macerals within oil shale comprise mainly Pediastrum-lamalginite with minor cutinite, resinite, liptodetrinite, sporinite, bituminite, and rare Botryococcus-telalginite. Therefore; the oil shale deposits can be described as “lamosites”. Minor vitrinite maceral is also recognized. TOC analysis on selected shale samples corresponds to a fair up to excellent category of source rock characterization. The hydrogen index (HI) for all samples shows a range of values from 207 - 864, and pyrolysis yield (PY) ranges from 2.67 to 79.72 mg HC/g rock. The kerogen is suggested to be of mixed Type II and Type I autochthonous materials such as alginite, with minor allochthonous substances. Oil samples collected appear to be positioned within more oil prone rather than gas prone. Thermal maturity of the oil shales gained from Tmax value and production index (PI) tends to show immature to marginally/early mature stage. A consistency in the thermal maturity level results by using both Tmax and vitrinite reflectance value is recognized. On the basis of  SEM analysis, the oil shale has undergone a late eodiagenetic process. Thereby, overall, vitrinite reflectance agreeing with Tmax rates, are also consistent with the PI (production index) values and SEM result. By evaluating all the results of geochemical and organic petrological analyses conducted on shale lithologies (shale and mudstone), it can be concluded that the oil shales in those areas have a favourable potential for generation of shale oil or gas to be included as alternative energy resources in the future.
Co-Authors . Solihin, . ADI, GILANG PERWIRA Agustina Djafar Anita Galih Ringga Jayanti Arya, Pulung P Astriandhita, Karina Melias Aswan Aswan Bani Nugroho, Bani Budi Muljana Danendra, Evan Faiz Ellin Harlia Emi Sukiyah Erick Setiyabudi Fatih, Rayhan Faurine, Nurul Rizma Fauziely, Lili Fitriany, Ria Haitami, Riza Rohmatul Hanifah, Rani Izdihar Helman Hamdani Helman Hamdani, Helman Ifan Yoga Pratama Suharyogi Ildrem Syafri Iqbal, M. ISANJARINI, VISMAIA Karina Melias Astriandhita Katon Sena Lestari, Tiffany Hanik Lia Jurnaliah Lia Jurnaliah Lili Fauzielly Lili Fauzielly Lili Fauzielly M. Iqbal M. Iqbal Mega Fatimah Rosana Mega Fatimah Rosana Mega Fattima Rosana Nana Suwarna Nana Suwarna Nana Suwarna Nisa, Firda Aulya Nugrahanto, Kuntadi oktariani, Hanny Oktariani, Hanny Pangaribuan, Vallery Theresa Parikesit Parikesit Parikesit Parikesit Pramudya, Rayhan Fatih Praptisih Praptisih Praptisih, . Purna Sulastya Putra Purna Sulastya Putra, Purna Sulastya Rachman, Rizki Satria Rahajeng Ayu Permana Sari Rahajeng Ayu Permana Sari Rahardjo, AT. - Rahmola, Wiryadi Rizkiputra Raihanna Ayu Lestari, Raihanna Ayu Ratih Damayanti Ravandi, Theo Alfredo Ria Fitriani, Ria Rina Nurani, Rina Rizki Satria Rachman Rizki Satria Rachman Rizki Satria Rachman Rizki Satria Rachman Rosana, Mega Fattima Rumsih, . Rusman Rinawan -, Rusman Rinawan Sakilla Gia Mentari Siti Mulia Nurul Aswad, Siti Mulia Nurul Suwarna, Nana Syafri, I - Teti Syahrulyati, Teti Tety Syahrulyati Tiffany Hanik Lestari Unggul Prasetyo Wibowo Vijaya Isnaniawardhani Witjahjati, Retno Wiwik Handayani YOGA, KUNCARANINGRAT EDI Yudhicara -, Yudhicara