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All Journal JUITECH: Jurnal Ilmiah Fakultas Teknik Universitas Quality Journal of Geosciences and Applied Geology
Rachmatika, Danella
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Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Earth & Planetary Sciences Engineering Industrial & Manufacturing Engineering Transportation

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Studi Pengembangan Lapangan Gas X dengan Simulasi Reservoir X Gas Field Development Study Using Reservoir Simulation Rachmatika, Danella; Mardiana, Dwi Atty; Prakoso, Suryo; Fathaddin, Muhammad Taufiq
JUITECH: Jurnal Ilmiah Fakultas Teknik Universitas Quality Vol 8, No 1 (2024)
Publisher : Universitas Quality

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36764/ju.v8i1.1255

Abstract

Lapangan X terletak di Laut Natuna Barat. PT. PQR mengebor sumur lapangan X pada tahun 2006 dan menembus beberapa bantalan gas di batupasir Upper dan Middle Arang. Studi lapangan X dimulai pada tahun 2006 dan selesai pada tahun 2013, namun akan ditinjau kembali pada tahun 2022 dengan maksud untuk melihat potensi bidang X dengan pemahaman saat ini. Tiga model reservoir untuk lapangan X dibangun dengan mengintegrasikan data geologi, geofisika, dan reservoir untuk menilai kisaran faktor pemulihan gas dan untuk mengoptimalkan rencana pengembangan lapangan. Dari hasil simulasi reservoar yang dilakukan pada masing-masing kasus, diperoleh perkiraan cadangan gas awal (OGIP) sebesar 14,6 untuk skenario 1, 44,2 untuk skenario 2 dan 59,2 skenario 3. Hasil studi menunjukkan bahwa skenario 3, skenario pengembangan dua sumur merupakan skenario pengembangan yang paling optimal dengan prediksi cadangan yang paling tinggi.
CHARACTERISTICS OF MINERAL ALTERATION ZONES IN KADIDIA GEOTHERMAL FIELD, SIGI DISTRICT, CENTRAL SULAWESI PROVINCE Rachmatika, Danella; Haryanto, Agus Didit; Hutabarat, Johanes; Hermawan, Dudi; Mustofa, Santia Ardi
Journal of Geological Sciences and Applied Geology Vol 3, No 2 (2019): Journal of Geological Sciences and Applied Geology
Publisher : Faculty of Geological Engineering, Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/gsag.v3i2.22459

Abstract

Kadidia geothermal area is located in Sigi Regency, Central Sulawesi Province. The survey area is about 57.1 km from the city of Palu and about 41.9 km from the capital city of Sigi Regency, Sigi Biromaru. The purpose of this research is to determine the characteristics of hydrothermal alteration in the research well. The method used is petrological analysis on KDD-1 well core data starting from the depth of 44,3 m – 703,85 m, petrographic analysis on 17 rock samples and Specterra analysis based on secondary data. The alteration minerals that appeared in research wells include chlorite, calcite, sericite, secondary quartz, iron oxide, opaque minerals and clay minerals with alteration types in the form of replacement and direct depositional. Based on the presence of minerals and determination of alteration zones, obtained Chlorite-Calcite-Illite-Smectite zone, which is characterized by the presence of chlorite, calcite, smectite, sericite alteration minerals at a depth of ± 12.7 m to ± 599 m. At depth of ± 599 to ± 703 m, alteration minerals that appear include chlorite, calcite, illite-smectite which are more dominant. Furthermore, it also found the presence of secondary quartz minerals that fill vugs, sericite and iron oxides with a rare intensity. This zone includes in the argillic zone with a temperature of 140°C - 220°C. It was concluded that the alteration rocks in KDD-1 wells are estimated as caprock zones of the Geothermal Kadidia system, which are formed because of the interaction between rocks and acidic fluid to low acid.
Co-Authors Agus Didit Haryanto -, Agus Didit Haryanto Hermawan, Dudi Johanes Hutabarat Mardiana, Dwi Atty Muhammad Taufiq Fathaddin, Muhammad Taufiq Mustofa, Santia Ardi Suryo Prakoso, Suryo