KARAKTERISTIK GEOKIMIA BATUAN INDUK FORMASI WALAT, KABUPATEN SUKABUMI, PROVINSI JAWA BARAT
Abstract
Kajian karakteristik geokimia batuan induk Formasi Walat di Sukabumi, Jawa Barat merupakan suatu langkah untuk mendapatkan informasi mengenai sistem minyak dan gas bumi yang ada. Lebih lanjut lagi, kajian ini juga diharapkan dapat mengungkap kesamaan sistem minyak dan gas bumi di daerah studi, dengan potensi hidrokarbon terbukti di Cekungan Jawabarat Utara. Kekayaan material organik, tingkat kematangan, serta tipe hidrokarbon yang dihasilkan merupakan parameter penting yang menunjukkan karakter batuan induk secara geokimia. Sistematika pemercontohan singkapan Formasi Walat yang diyakini berpotensi sebagai batuan induk, dianalisis ke laboratorium untuk penyelidikan karakteristik geokimia. Sebanyak tujuh belas percontoh terpilih, dan selanjutnya dianalisis karakter geokimianya melalui parameter Total Organic Carbon dan Rock Eval Pyrolysis (nilai S1, S2, dan S3 beserta turunannya).
Berdasarkan tingkat kematangan, semua percontoh berada pada tingkatan matang hingga matang akhir dengan kualitas kerogen tipe III yang menghasilkan gas. Hasil penelitian menunjukkan bahwa Formasi Walat memiliki karakter batuan induk dengan kekayaan sedang hingga sangat baik, dan memiliki potensi untuk menghasilkan hidrokarbon jenis gas. Berdasarkan penemuan sumber batuan induk potensial di formasi ini, maka dapat dikatakan bahwa di daerah studi terdapat sistem minyak dan gas bumi yang setara dengan Cekungan Jawabarat Utara, sehingga eksplorasi migas pada wilayah selatan Jawa Barat menjadi menarik.
Downloads
References
Adhiperdana, B. G. (2018). Sedimentological study of a fluvial succesion of the Eocene-Oligocene Bayah Formation, West Java: Reconstruction of paleohidrological features of an ancient fluvial system using empirical equations developed from modern fluvial systems in the Indonesian islands. Chiba University, Japan. (Unpublished Doctoral Dissertation).
Baumann, P., De Genevraye, P., Samuel, L., Mudjito, & Sajekti, S. (1973). Contribution to The Geological Knowledge of South West java. In Indonesian Petroleum Association, Second Annual Convention (pp. 105–108).
Bouma, A. H., Berryhill, H. L., Khebel, H. J., & Brenner, R. L. (1982). Continental Shelf. In P. A. Schole & D. Spearing (Eds.), Sandstone Depositional Environments: AAPG Memoir 31.
Cant, D. J. (1982). Fluvial Facies Models. In P. A. Schole & D. Spearing (Eds.), Sandstone Depositional Environments, AAPG Memoir 31 (p. 410).
Clements, B., & Hall, R. (2007). Cretaceous to Late Miocene stratigraphic and tectonic evolution of West Java. Proceedings of the Indonesian Petroleum Association, (May), 1–18.
Coleman, J. M., & Prior, D. B. (1982). Deltaic Environments. In P. A. Schole & D. Spearing (Eds.), Sandstone Depositional Environments: AAPG Memoir 31.
Darman, H., & Sidi, H. (2000). An Outline of the Geology of Indonesia. A Special Publication of the Indonesian Association of Geologist (IAGI).
Demaison, G., Holck, J. J., Jones, R. W., & Moore, G. T. (1983). PD 1(2) Predictive Sourcebed Stratighraphy: A Guide to Regional Petroleum Occurence. In 11th World Petroleum Congress. World Petroleum Congress.
Dembicki, H. (2009). Three common source rock evaluation errors made by geologists during prospect or play appraisals. AAPG Bulletin, 93(3), 341–356. https://doi.org/10.1306/10230808076
Effendi, A. C., & Hermanto, B. (1986). Peta Geologi Lembar Bogor, Jawa Barat, Skala 1: 100.000. Direktorat Geologi, Departemen Pertambangan, Bandung.
Espitalié, J., Madec, M., Tissot, B. P., Mennig, J. J., & Leplat, P. (1977). Source rock characterization method for petroleum exploration. Offshore Technology Conference, Houston, 439–444. https://doi.org/10.4043/2935-ms
Hakimi, M. H., & Abdullah, W. H. (2013). Organic geochemical characteristics and oil generating potential of the Upper Jurassic Safer shale sediments in the Marib-Shabowah Basin, western Yemen. Organic Geochemistry, 54, 115–124. https://doi.org/10.1016/j.orggeochem.2012.10.003
Langford, F. F., & Blanc-Valleron, M. M. (1990). Interprting Rock-Eval Pyrolosis Data Using Graphs of Pyrolizable Hydrocarbons vs. Total Organic carbon. The America Association of Petroleum Geologists Bulletin, 74(6), 799–804.
Lüniger, G., & Schwark, L. (2002). Characterisation of sedimentary organic matter by bulk and molecular geochemical proxies: An example from oligocene maar-type Lake Enspel, Germany. Sedimentary Geology, 148(1–2), 275–288. https://doi.org/10.1016/S0037-0738(01)00222-6
Martodjojo, S. (2003). Evolusi Cekungan Bogor, Jawa Barat. Bandung: ITB.
Martodjojo, S. (1984). Evolution of Bogor Basin, West Java. Institut Teknologi Bandung.
McCarthy, K., Rojas, K., Niemann, M., Palmowski, D., Peters, K., & Stankiewicz, A. (2011). Basic Petroleum Geochemistry for Source Rock Evaluation. Oilfield Review, 23(2), 32–43. https://doi.org/10.1016/j.epsl.2006.01.027
Peters, K. E. (1986). Guidelines for Evaluating Petroleum Source Rock Using Programmed Pyrolysis. The American Association of Petroleum Geologists Bulletin, 70(3), 318–329.
Peters, K. E., & Cassa, M. R. (1994). Applied Source Rock Geochemistry. AAPG Memoir 60, (January 1994), 93–120.
Purnomo, E., Ryacudu, R., Sunardi, E., & Koesoemadinata, R. P. (2006). Paleogene sedimentation of the jatibarang sub-basin and its implication for the deep play petroleum system of the Onshore Northwest Java Basin, Indonesia. In Jakarta International Geosciences Conference and Exhibition Proceedings.
Remington, D. H., & Pranyoto, U. (1985). A hydrocarbon generation analysis in the N.W. Java basin using Lopatin’s method. In Indonesia Petroleum Association, Fourth Annual Convention Proceedings.
Samuel, & Mujito. (1976). A Geological Guide Along the Road Between Cibadak Pelabuhanratu (Southwest Java).
Song, J., Littke, R., Weniger, P., Ostertag-Henning, C., & Nelskamp, S. (2015). Shale oil potential and thermal maturity of the Lower Toarcian Posidonia Shale in NW Europe. International Journal of Coal Geology, 150–151, 127–153. https://doi.org/10.1016/j.coal.2015.08.011
Sunardi, E., & Adhiperdana, B. G. (2008). An Account for the Petroleum Prospectivity of the Southern Mountain of West Java: A Geological Frontier in the West? In Indoesia Petroleum Association, 32nd Annual Convention Proceeding.
Sunardi, E., & Adhiperdana, B. G. (2013). Sedimentologi dan Paleohidrologi Sedimen Fluvial Oligosen Formasi Walat, Sukabumi-Jawa Barat. Bionatura, 15(1), 8–13.
Tissot, B. P., & Welte, D. H. (1985). Petroleum Formation and Occurrence. Springer-Verlag, Berlin, Germany. https://doi.org/10.1029/EO066i037p00643
Waples, D. W. (1985). Geochemistry in petroleum exploration. D. Reidel Publishing Company. https://doi.org/10.1007/978-94-009-5436-6
Zielger, V. (1918). The Movements of oil and Gas through Rocks. Economic Geology, 13(5), 335–348.
Copyright (c) 2018 Buletin Sumber Daya Geologi
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
Authors whose manuscripts are published agree to the following terms:
The publication rights of all journal manuscript materials published on the Buletin Sumber Daya Geologi website are held by the editorial board with the knowledge of the author (moral rights remain with the manuscript’s author).
The formal legal provisions for access to digital articles in this electronic journal are subject to the terms of the Creative Commons Attribution-ShareAlike (CC BY-SA) license. This means that Buletin Sumber Daya Geologi has the right to store, convert media/formats, manage in the form of a database, maintain, and publish the article without requesting permission from the author, as long as the author’s name is cited as the copyright holder.
Manuscripts published in both print and electronic formats are open access for educational, research, investigative, and library purposes. Beyond these purposes, the editorial board is not responsible for any violations of copyright law.
