APLIKASI METODE GAYA BERAT UNTUK INDENTIFIKASI POTENSI HIDROKARBON DI DALAM CEKUNGAN JAKARTA DAN SEKITARNYA
DOI:
https://doi.org/10.33332/jgsm.geologi.v19i6.218Abstract
Bouguer anomaly in Jakarta Basin can be grouped into 2 parts there are the Bouguer anomaly of 40 mgal to 60 mgal showing limestone and volcanic breccia. Bouguer anomalies 20 mgal to 40 mgal indicate sedimentary rock basin. Rock units based on residual anomaly are grouped into 6 parts: Kaliwangu Formation or Cisubuh Formation with a density of 2.5 gr /cm3, Subang Formation with a density of 2.45 gr / cm3, Parigi Formation / Cibulakan with a density of 2.7 gr / cm3, Jatiluhur Formation with a density of 2. 6 gr / cm3, Jatibarang Formation 2.8 gr/cm3, metamorphic bed rocks / intrusive rocks with a density of 2.9 gr /cm3, Rengasdengklok and Karawang anticline are interpreted as a good prospective hydrocarbon formed in a residual anomaly of 10 mgal with a density 2.7 gr / cm3 depthness between. 1900-2200m. Jakarta anticline to the south and Bekasi anticline are interpreted as having the prospect with residual anomalies of 0-4 mgal, but having a smaller dimension. Lower Cibulakan Formation is as the source rock consisting of shale lacustrine, and the reservoir rocks are Cibulakan and Parigi Formation with the thickness of + 400 m consisting of limestone cavities. Pretertiary bedrock with the density of 2.9 gr/ cm3 consists of metamorphic / igneous rocks .
Â
Keywords: gravity, residual anomaly, formation, anticline, oil and gas
Downloads
References
Adnan, A., dan Sukowitno., Suprianto., 1991. Jatibarang Sub basin Half Graben Model in the Onshore of Northwest Java. Proceedings PA 20 th., Ann. Conv, 223-235.
Apandi,D., Suyitno, P., 1975. The Cibulakan Formation as one of the most Prospective Stratigraphic Units in the Nort-West Java Basinal Area. Proceedings Indonesian Petroleum Association Fourth Annual Convention, Jakarta, 160~ 174.
Sudana, D., A. Achdan., 1989. Geologi Lembar Karawang, Laporan terbuka, Pusat Penelitian dan Pengembangan Geologi, Bandung.
Suyono,M., 1987. Stratigraphic and Tectonic Behaviour of the Back - Arc Basin iii West Java. Pusat Penelitian dan Pengembangan Geologi Bandung, E 87 -7.
Supriyanto. ,dan Anditya, MT., 1997. Model Pertumbuhan Sembulan Karbonat Akibat Progradasi Sesar Naik di bagain Selatan Cekungan Jawa Barat Utara, Proceedings of the ez: Annual Convention of The . Indonesian Association of Geologists: 130-148.
Suprajitno, M., 2003. The Aplication of Elastic Impedance For Delineating Oil Zone in Tambun Kelapa Oil Field.
Proceedings of Joint Convention Jakarta, Indonesian Geologists Association and Indonesian Geophysicists Association 2003 Jakarta, T-177.
Yanto, R., dan Sumantri., 1982. Gas karbondioksida Di dalam Cekungan Minyak Jawa Barat Utara JawaBarat, Proceedings PIT Xllkata Ahli Geologi Indonesia: 213-236.
Downloads
Published
Issue
Section
License
Authors who publish articles in Jurnal Geologi dan Sumberdaya Mineral (JGSM.Geologi) agree to the following terms:
- Authors retain copyright of the article and grant the journal right of first publication with the work simultaneously licensed under a CC-BY-NC or The Creative Commons Attribution–ShareAlike License.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgment of its initial publication in this journal.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access)
