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All Journal LEMBARAN PUBLIKASI MINYAK DAN GAS BUMI Scientific Contributions Oil and Gas
Guntur Adham Syahputra
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Chemical Engineering, Chemistry & Bioengineering Earth & Planetary Sciences Energy Environmental Science

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POTENSI BATUAN INDUK FORMASI SALODIK PULAU PELENG BAGIAN BARAT, CEKUNGAN BANGGAI Guntur Adham Syahputra; Warto Utomo; Arief Rahman
Lembaran Publikasi Minyak dan Gas Bumi Vol. 53 No. 2 (2019): LPMGB
Publisher : BBPMGB LEMIGAS

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Abstract

Cekungan Banggai merupakan suatu cekungan produktif di Indonesia yang terdiri atas offshore (Laut Banda) dan onshore (pesisir Timur Sulawesi Tengah, Pulau Peleng, Kepulauan Banggai). Cekungan Banggai menyumbangkan produksi gas yang cukup signifi kan, diantaranya berasal dari Lapangan Senoro dan Donggi-Matindok. Daerah penelitian terletak di Pulau Peleng bagian Barat, yang merupakan tepian dari Cekungan Banggai. Penelitian bertujuan untuk mendapatkan karakteristik dan potensi kematangan pada batuan induk Eosen-Miosen; Formasi Salodik. Pengukuran data geokimia dilakukan di laboratorium meliputi Total Organic Carbon (TOC) dan Rock- Eval Pyrolysis, dengan data keluarannya yaitu: %TOC, S1 , S2 , S3 dan Tmax. Berdasarkan parameter tersebut, secara matematis diperoleh data geokimia turunan yaitu potential yield (PY), hydrogen index (HI), oxygen index (OI) dan productivity index (PI). Analisis dan interpretasi data geokimia dilakukan terhadap plot data kedalaman semu terhadap TOC, PY, HI, dan PI, TOC terhadap HI, OI terhadap HI dan Tmax terhadap HI. Analisis dan interpretasi dikaitkan dengan geologi regional di sekitarnya. Hasil penelitian ini adalah; karakter dan potensi batuan induk Formasi Salodik kaya akan material organik yang ditunjukkan dari nilai TOC dan PY, dengan kerogen tipe II/III. Tingkat kematangan menunjukkan kondisi belum matang, tetapi apabila batuan induk Formasi Salodik mencapai kematangan yang optimum, maka dapat menghasilkan minyak dan gas.
Reservoir Characterization of the Terumbu and Arang Formations Using Model-Based Seismic Inversion in the East Natuna Basin Adham Syahputra, Guntur; Haris, Abdul; Wibowo, Ricky Adi; Wijanarko, Edy
Scientific Contributions Oil and Gas Vol 49 No 1 (2026)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/scog.v49i1.1979

Abstract

The Miocene carbonate buildup and fine-grained clastic sequence constitute the main reservoir and sealing intervals in the East Natuna Basin. This study characterizes the reservoirs of the Terumbu and Arang Formations using an integrated workflow that includes petrophysical analysis, sensitivity analysis, depth structure mapping, and model-based seismic inversion. Well-log interpretation shows clear lithological contrasts between the two formations. The Terumbu carbonates exhibit very low gamma-ray values (18 to 24 API) and high porosity, ranging from 28 to 37%, with neutron–density crossovers indicating gas-bearing intervals, particularly in the GADO-3 well, where resistivity values range from 852 to 1958 Ω·m. In contrast, the Arang Formation is characterized by high gamma-ray values (102 to 148 API), higher clay volume (30 to 44%), and low porosity (<10%). P-impedance–density cross-plots distinguish carbonate rocks (4,500 to 10,000 g/cc·m/s; 1.7 to 2.35 g/cc) from shale and shaly sand with higher impedance and density. Depth structure mapping reveals a central–northern structural high that is favorable for reef development and fault-related trapping. Model-based seismic inversion further reveals low-to-moderate impedance (4,100 to 6,156 g/cc·m/s), low density, and high inverted porosity within the Top Terumbu interval, indicating excellent reservoir quality. Overall, the results indicate that the Terumbu Formation forms the primary carbonate reservoir, while the Arang Formation mainly acts as an effective regional seal in the petroleum system of the East Natuna Basin
Co-Authors Abdul Haris Arief Rahman Warto Utomo Wibowo, Ricky Adi Wijanarko, Edy