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Analisis fasies dan sikuen stratigrafi pada formasi air bekanat, berdasarkan data deskripsi core dan log sumur lapangan minyak "X", lapisan "HJ" cekungan Sumatera Selatan

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Oleh : Hisar Josua Apriano Simatupang

Info Katalog

Nomor Panggil : 1131/TG/2019

Penerbit : FTKE - Usakti

Kota Terbit : Jakarta

Tahun Terbit : 2019

Pembimbing 1 : Ovinda

Subyek : Stratigraphic geology

Kata Kunci : South Sumatra Basin, Air Benakat Formation, Facies, Depositional Environment, Sequence Stratigraphy


File Repositori
No. Nama File Ukuran (KB) Status
1. 2019_TA_GL_072001300055_Halaman-judul.pdf 5989.7
2. 2019_TA_GL_072001300055_BAB-1.pdf 1865.61
3. 2019_TA_GL_072001300055_BAB-2.pdf 16929.95
4. 2019_TA_GL_072001300055_BAB-3.pdf 2835.59
5. 2019_TA_GL_072001300055_BAB-4.pdf 17868.36
6. 2019_TA_GL_072001300055_BAB-5.pdf 930.47
7. 2019_TA_GL_072001300055_Daftar-Pustaka.pdf 1408.15
8. 2019_TA_GL_072001300055_Lampiran.pdf 2118.95

L Lapangan minyak “X” merupakan wilayah kerja dari KSO Pertamina EP – SE BWPMeruap yang berada pada Cekungan Sumatra Selatan. Penelitian ini difokuskanpada Formasi Air Benakat. Penelitian ini menerapkan fasies dan sikuen stratigrafidengan metode korelasi, kalibrasi dan analisa, yang akan memberikan hasil berupa(1) Penentuan fasies dan litologi (litofasies, elektrofasies) (2) Penentuan marker /korelasi sikuen stratigrafi (3) Pemodelan peta isopach lingkungan pengendapan dan(4) Runtunan paleogeografi serta penampang yang mewakili setiap kronologilingkunngan pengendapan yang berlanjut. Data yang digunakan dalam penelitianini meliputi integrasi dari: 6 data well logs, 1 data batuan inti (drilling core), 1 SideWall Core (SWC).Interpretasi lingkungan pengendapan, dan korelasi marker sikuen stratigrafi padalapangan minyak “X”, lapisan “HJ” antara lain ditentukan oleh analisis data welllog. Pada area penelitian, litologi yang diperoleh berupa sandstone, shaly sand danclaystone disertai oleh analisa elektrofasies well log yang dilakukan terhadap enamsumur dan core berupa litofasies. Pola log gamma ray berhubungan dalampenentuan fasies, pada lapisan penelitian diperoleh dominan pola log berupaserrated, bell shape, funnel shape dan blocky. Berdasarkan asosiasi fasies yangdidapatkan, lingkungan pengendapan pada lapisan “HJ” berupa upper shoreface,middle shoreface, lower shoreface, estuarine channel dan tidal mudflat. Besertaparasikuen pada area penelitian dibagi menjadi dua (2) parasikuen.

T The "X" oil field is the working area of the KSO Pertamina EP - SE BWPMeruap located in the South Sumatra Basin. This research is specifically focusedwithin the Air Benakat Formation. This study uses facies and stratigraphicsequences by applying basic correlation method, calibration and analysis, whichwill give results in the form of (1) Determination of facies and lithology (lithofacies,electrofacies) (2) Determination of marker / sequence stratigraphy corelation (3)Depositional environment isopach mapping(4) Paleogeographic sequences andcross section that represents each ongoing chronology of each depositionalenvironment within. The data used in this study includes integration of 6 well logsdata, 1 drilling core data, 1 Side Wall Core (SWC) data.Interpretation of depositional environments, and sequencestratigraphical markers on oil field “X”, "HJ" stratum, among others, aredetermined by analysis of well log data. In the study area, the lithology obtainedconsisted of sandstone, shaly sand and clay stone which was obtained byelectrofacies log analysis carried out by six well logs and core obtaining lithofacies.Gamma ray log patterns are crucial for determining facies within the “HJ”stratum, dominant log patterns consists of serrated, bell shape, funnel and blocky.Based on the associations obtained, the depositional environment in the "HJ"stratum consists of the upper shoreface, middle shoreface, lower shoreface,estuarine channel and tidal mudflat. Along within the parasequence in the studywas divided into two (2) parasequences.

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