GEOLOGI DAN STUDI SIKUEN STRATIGRAFI BATUAN KARBONAT BERDASARKAN DATA SUMUR PADA LAPANGAN “FR”, FORMASI BATURAJA, CEKUNGAN SUMATRA SELATAN

PRATIWI, FRISKA MESY AYU (2024) GEOLOGI DAN STUDI SIKUEN STRATIGRAFI BATUAN KARBONAT BERDASARKAN DATA SUMUR PADA LAPANGAN “FR”, FORMASI BATURAJA, CEKUNGAN SUMATRA SELATAN. Other thesis, UPN Veteran Yogyakarta.

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Abstract

v
ABSTRAK
Formasi Baturaja, Lapangan “FR”, termasuk dalam Sub-Cekungan Palembang Selatan,
Cekungan Sumatra Selatan yang berada pada Blok Lematang. Cekungan Sumatra Selatan
ini merupakan salah satu cekungan yang cukup prospek dalam proses eksplorasi
hidrokarbon yang berupa minyak maupun gas. Berdasarkan hal tersebut, dilakukan suatu
penelitian pada Formasi Baturaja, Lapangan “FR”, untuk mengetahui sikuen stratigrafi
pada area penelitian dan melakukan pemodelan dari fasies lingkungan pengendapan
pada lokasi penelitian. Penelitian dilakukan dengan melakukan analisis persebaran fasies
dan interpretasi lingkungan pengendapan dengan menggunakan data sumur yang meliputi
data core, mud log, dan data log sumur. Berdasarkan analisis dan pengolahan data yang
dilakukan, diketahui bahwa formasi pada daerah penelitian tersusun atas batugamping
yang terbentuk pada Miosen Awal yaitu terdiri dari litofasies Mudstone, Wackestone,
Floatstone, Rudstone, dan, Bindstone yang terdapat pada bagian Upper Baturaja,
sedangkan untuk Lower Baturaja terdiri dari litofasies berupa Shale, Sandy Limestone,
dan Terrigeneous Mudstone. Daerah penelitian ini terdiri atas 2 sikuen yang meliputi
Maximum Flooding Surface (MFS 1), Maximum Regressive Surface (MRS 1), Sequence
Boundary (SB 1), Maximum Flooding Surface (MFS 2), Maximum Regressive Surface
(MRS 2), Sequence Boundary (SB 2). Berdasarkan interpretasi yang dilakukan,
lingkungan pengendapan litofasies-litofasies daerah penelitian adalah lingkungan
interreef lagoonal, reef flat lagoon, reef, dan reef flat. Pada daerah penelitian, berkembang
struktur geologi yang berupa sesar berarah relatif barat-timur dan sesar normal yang
berarah relatif baratdaya-timurlaut yang terbentuk saat fase kompresi pada megasikuen
syn-orogenic/ inversion yang terjadi pada Pliosen–Plistosen.
Kata Kunci: Cekungan Sumatra Selatan, Fasies Karbonat, Formasi Baturaja, Sikuen
Stratigrafi
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ABSTRACT
The Baturaja Formation, "FR" Field, is included in the South Palembang Sub-Basin,
South Sumatra Basin which is in the Lematang Block. The South Sumatra Basin is one of
the basins that is quite promising in the process of exploring hydrocarbons in the form of
oil and gas. Based on this, research was carried out on the Baturaja Formation, "FR"
Field, to determine the stratigraphic sequence in the research area and to model the
depositional environmental facies at the research location. The research was carried out
by analyzing the distribution of facies and interpreting the depositional environment using
well data which includes core data, mud logs, well log data, and secondary seismic data.
Based on the analysis and data processing carried out, it is known that the formation in
the study area is composed of limestone which was formed in the Early Miocene, namely
consisting of the lithofacies Mudstone, Wackestone, Floatstone, Rudstone, and, Bindstone
which is found in the Upper Baturaja section, while for Lower Baturaja it consists of
lithofacies in the form of Shale, Sandy Limestone, and Terrigeneous Mudstone. This
research area consists of 2 sequences which include Maximum Flooding Surface (MFS
1), Maximum Regressive Surface (MRS 1), Sequence Boundary (SB 1), Maximum
Flooding Surface (MFS 2), Maximum Regressive Surface (MRS 2), Sequence Boundary
(SB 2). Based on the interpretation carried out, the depositional environments of the
lithofacies - lithofacies in the study area are interreef lagoonal, reef flat lagoon, reef, and
reef flat environments. In the study area, geological structures have developed in the form
of faults trending relatively west-east and normal faults trending relatively southwest-
northeast which were formed during the compression phase of the syn-orogenic/inversion
mega-sequence that occurred in the Pliocene–Pleistocene.
Keywords: South Sumatra Basin, Carbonate Facies, Baturaja Formation, Stratigraphic
Sequence

Item Type:	Thesis (Other)
Uncontrolled Keywords:	South Sumatra Basin, Carbonate Facies, Baturaja Formation, Stratigraphic Sequence
Subjects:	Q Science > QE Geology
Divisions:	Faculty of Engineering, Science and Mathematics > School of Geography
Depositing User:	Eko Yuli
Date Deposited:	17 Jul 2024 01:36
Last Modified:	17 Jul 2024 01:36
URI:	http://eprints.upnyk.ac.id/id/eprint/40249

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