Characterization of Basement Fracture Reservoir In Field ‘X’, South Sumatera Basin, Based On The Analysis of Core And FMI Log
Basement reservoir is a reservoir that is located in the basement rock, comprised of either igneous rock or metamorphic rock that has secondary porosity, resulting in its capability to store oil and gas. The research was conducted at field 'X' that is located at South Sumatra basin and it is a part of Jambi Sub-Basin. The study was focused on discussing hydrocarbon potential in Fields 'X', particularly at the basement metamorphic rock. The study was conducted at two wells in the field. The secondary porosity system of the basement is fracture porosity. Fracture analysis as secondary porosity system was performed on two wells, HA-1 and HA-2, by using FMI log interpretation. Based on the analysis of fracture on HA-1 well, the trend of fracture system is Northeast - Southwest (NE-SW) with a fracture porosity of 1.49%. On a different note, the trend of fracture system on HA-2 wells is East Northeast - West Southwest (ENE-WSW) with a fracture porosity of 0.888%. The effect of rock properties itself has little influence on the number of fractures as opposed to the effect of surrounding tectonic forces. The fractures are controlled by geological structures following Jambi pattern that has an orientation of Northeast - Southwest (NE-SW). Although the fracture porosity is relatively small, it is enough to storing hydrocarbons in economical quantity.
Asquith, G. B. 1976. Basic Well Log Analysis for Geologist. Edisi ke-2. American Association of Petroleum Geologist: Oklahoma.
Bishop, M. G. 2001. South Sumatera Basin Province, Indonesia: The Lahat/Talang Akar-Cenoic Total Petroleum system. United States Geological Survey Open-File Report 99-50-S.
De Coster G.L 1974. The Geologi of The Central and South Sumatera Back Arc Basin: Proceedings Indonesian Petroleum Association, 10th Annual Convention: Jakarta.
Diament, M., Harjono, H., Karta, K., Deplus, C., Dahrin, D., Zen, JR. M.T., Gerrard, M., Lassal, O., Martin, A. & Malod, J. 1992. Mentawai Fault Zone off Sumatra : A New Key to the Geodynamics of Western Indonesia. Geology 20, 259-262.
Hamilton, W. 1979. Tectonics of the Indonesia Region. U.S.Geological Survey, Professional Paper. 1078,345 h.
Handayani, L., Harjono, H. 2008. Perkembangan Tektonik Daerah Busur Muka Selat Sunda dan Hubungannya dengan Zona Sesar Sumatera. Jurnal Riset Geologi dan Pertambangan 18, 31-40.
Harsono, A. 1997. Evaluasi Formasi dan Aplikasi Log, Edisi 8. Schlumberger Oildfield Service: Jakarta.
Indonesian Basin Summaries. 2006. Patra Nusa Data: Jakarta.
Koesoemadinata, R.P.1980. Geologi Minyak dan Gas Bumi, Jilid 1 dan 2. Institut Teknologi Bandung: Bandung.
Landes, K.K et al. 1960. Petroleum Resources in Basement Rocks. AAPG Bulletin. 44, pp 1682-1691
Nelson, R. A. 2001. Geological Analysis of Naturally Fractured Reservoirs. Second Edition. Gulf Professional Publishing: USA.
Pulunggono, A.dkk, 1992. Pre-Tertiary and Tertiary Fault System As a Framework of the South Sumatera Basin: A study of SAR-MAPS. Proceed. Indon. Petrol. Assoc. 21st Annual Conv. Pp 339-360.
Raymond, L. A.1943. Petrology, The Study of Igneous, Sedimentary, and Metamorphic Rocks. Second Edition. Appalachian State Universiy: Boston.
Rider, M. 1996. The Geological Interpretation of Well Log. Petroleum Exploration Consultant: Aberdeen.
Sen, Gautam. 2001. Petrology, Principles and Practice. American University of Sharjah: Sharjah, United Arab Emirates.
Simandjuntak, T.O. 2015. Tektonika. Edisi ke-4. Badan Geologi Kementrian Energi dan Sumber Daya Mineral.
Syafri, I. 2002. Petrologi. Pusat Pendidikan dan Pelatihan Geologi: Bandung.
Zou, C. 2013. Unconcentional Petroleum Geologiy. Research Institut of Petroleum Exploration & Development: Beijing
Copyright (c) 2017 Journal of Geoscience, Engineering, Environment, and Technology
This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
Copyright @2019. This is an open-access article distributed under the terms of the Creative Commons Attribution-ShareAlike 4.0 International License which permits unrestricted use, distribution, and reproduction in any medium. Copyrights of all materials published in JGEET are freely available without charge to users or / institution. Users are allowed to read, download, copy, distribute, search, or link to full-text articles in this journal without asking by giving appropriate credit, provide a link to the license, and indicate if changes were made. All of the remix, transform, or build upon the material must distribute the contributions under the same license as the original.