Struktur Geologi Bawah Permukaan Cekungan Bintuni Berdasarkan Data Gaya Berat

Authors

  • Accep Handyarso Pusat Survei Geologi
  • Tatang Padmawidjaja Pusat Survei Geologi

DOI:

https://doi.org/10.33332/jgsm.geologi.v18i2.125

Abstract

Bintuni Basin is one of the giant basins in Eastern Region of Indonesia (KTI). Until now there are only few oil and gas production fields in the Bintuni Basin. This case prompted the government to accelerate the discoveries of new oil and gas reserves in Eastern Region of Indonesia, particularly in the Bintuni Basin. Gravity method is one of geophysical method that is commonly used in preliminary studies of sedimentary basins. Bouguer anomaly obtained is reduced by using an average density based on the Nettleton method. Regional–residual anomaly separation is performed based on the spectral analysis. Residual anomaly showed anticline closures with a northwest–southeast directions, and also there are indication of some strike–slip faults which are expected as

 the result of the compression due to the Pacific Oceanic Plate and the Australian Continent Plate movement. The result from spectral analysis showed that the average depth of the bedrock is up to 6.5 km. Based on the 2.5D subsurface geological structures estimation indicates shallowing basement toward Mogoi and Kamundan district area with some fault structures that allows migration of the hydrocarbon from Pratertier source rocks to the Kais reservoir.

 

Keywords: Bintuni Basin, Bouguer, Residual, Spectral

Analysis, Anticline



 

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References

Badan Geologi. 2010. Peta Cekungan Sedimen Indonesia Berdasarkan Data Gaya Berat dan Geologi. BadanGeologi

BAKOSURTANAL, 2003. Peta Topografi Indonesia. Provinsi Irian Jaya (Papua). Badan Koordinasi Survei dan Pemetaan Nasional.

Blakely, RJ., 1995. Potential Theory in Gravity and Magnetic Application. Cambridge University Press.

Charlton, T. R. 1999. Tertiary Evolution of The Eastern Indonesia Collision Complex. Journal of Asian Earth Sciences 18 (2000) pp. 603 – 631.

Dolan, Paul J., Hermany. 1988. The Geology of The Wiriagar Field, Bintuni Basin, Irian Jaya. Proceeding IPA. Seventeenth Annual Convention.

Haddad, D., Watts, A. B. 1999. Subsidence History, Gravity Anomalies, and Flexture of The NorthEast Australian Margin in Papua New Guinea. Tectonics Vol 18, No. 5 pp. 827–842.

Kadir, A. 2000. Eksplorasi Gaya Gravitasi dan Magnetik. Program Jurusan Teknik Geofisika Fakultas Ilmu Kebumian dan Teknologi Mineral, Institut Teknologi Bandung. Bandung.

Lilie, R.J., 1999. Whole Earth Geophysics, An Introductory Textbook for Geologists & Geophysicists. Prentice–Hall.

Nettleton, L. L. 1942. Determination of density for reduction of Gravimeter Observation, Geophysics, Vol. 42, P.117–134.

Patra Nusa Data, P.T., 2006. Indonesian Basin Summaries (IBS). Inameta Series, Indonesia Metadata Base. PT. Patra Nusa Data.

Sapiie, B., Naryanto, W., Adyagharini, A.C. & Pamumpuni, A., 2012, Geology and Tectonic Evolution of Bird Head Region Papua, Indonesia: Implication for Hydrocarbon Exploration in Eastern Indonesia, Search & Discovery Article, No. 30260.

Sukanta, U., Pigram, C.J., 1989. Peta Geologi Lembar Taminabuan skala 1:250.000. Pusat Penelitian dan Pengembangan Geologi (PPPG).

Telford, W.M., Geldart, L.P., Sheriff, R.E., 2004. Applied Geophysics 2nd edition. Cambridge University Press. Cambridge.

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Published

2017-05-29

Issue

Vol. 18 No. 2 (2017): Jurnal Geologi dan Sumberdaya Mineral

Section

Article

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