MAULINA, 1515051017 (2019) IDENTIFIKASI ZONA PROSPEK RESERVOIR MIGAS DAN GAS BIOGENIK MENGGUNAKAN DATA LOG, PETROFISIKA DAN GEOKIMIA PADA LAPANGAN “MN” CEKUNGAN NIAS SUMATERA UTARA. Fakultas Teknik, Universitas Lampung.
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Abstrak (Berisi Bastraknya saja, Judul dan Nama Tidak Boleh di Masukan)
The fore-arc basin has been become a target of reservoir searching for a long time based on previous expert studies, where the indications of Late-Miocene carbonate age that could act as a hydrocarbon reservoir was found. ‘MN’ Field located in the Nias Basin, one of the fore-arc basin located in West of Sumatera. As the object of this study, it is hoped that the hydrocarbon reservoir in the fore-arc basin is expected to be discovered and to identify the characteristics of rocks that potential to become hydrocarbon reservoirs. Geochemical data becomes supporting data regarding the presence of gases that are identified as biogenic gases because of the content of methane as the main composition. Identification of the existence of reservoir zones and source rock is done by qualitative interpretation of log data from the L-1, P-1, S-1, T-1 and UB-1 Well. Then, the petrophysical parameters are analyzed in the form of shale volume (Vsh), effective porosity, resistivity water (Rw), and water saturation (Sw) to determine the type of reservoir’s fluid. After knowing the petrophysical parameters value, distribution area correlation of reservoir and source rock can be made in the study area. The results of the interpretation indicated that the presence of biogenic gas was detected in S-1 and P-1 Well on limestone lithology with Late Miocene age. Biogenic gas in the ‘MN’ Field has PHIE value characteristics around 17,0 – 32,1 % and Sw value is 39,9 % - 61,3 %. Keywords: biogenic gas, hydrocarbon reservoir, immature source rock, limestone, Late Miocene The fore-arc basin has been become a target of reservoir searching for a long time based on previous expert studies, where the indications of Late-Miocene carbonate age that could act as a hydrocarbon reservoir was found. ‘MN’ Field located in the Nias Basin, one of the fore-arc basin located in West of Sumatera. As the object of this study, it is hoped that the hydrocarbon reservoir in the fore-arc basin is expected to be discovered and to identify the characteristics of rocks that potential to become hydrocarbon reservoirs. Geochemical data becomes supporting data regarding the presence of gases that are identified as biogenic gases because of the content of methane as the main composition. Identification of the existence of reservoir zones and source rock is done by qualitative interpretation of log data from the L-1, P-1, S-1, T-1 and UB-1 Well. Then, the petrophysical parameters are analyzed in the form of shale volume (Vsh), effective porosity, resistivity water (Rw), and water saturation (Sw) to determine the type of reservoir’s fluid. After knowing the petrophysical parameters value, distribution area correlation of reservoir and source rock can be made in the study area. The results of the interpretation indicated that the presence of biogenic gas was detected in S-1 and P-1 Well on limestone lithology with Late Miocene age. Biogenic gas in the ‘MN’ Field has PHIE value characteristics around 17,0 – 32,1 % and Sw value is 39,9 % - 61,3 %. Keywords: biogenic gas, hydrocarbon reservoir, immature source rock, limestone, Late Miocene
| Jenis Karya Akhir: | Skripsi |
|---|---|
| Subyek: | 600 Teknologi (ilmu terapan) |
| Program Studi: | Fakultas Teknik > Prodi S1-Teknik Geofisika |
| Pengguna Deposit: | UPT . Digilib6 |
| Date Deposited: | 29 Mar 2022 13:38 |
| Terakhir diubah: | 29 Mar 2022 13:38 |
| URI: | http://digilib.unila.ac.id/id/eprint/56652 |
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