Update Artikelilmiah: 13184

MUHAMMAD NUR SHOFA AJI MAHADI

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Abstrak (Bhs. Indonesia)

Lapangan “MHD” secara umum termasuk ke dalam Cekungan Sumatera Selatan, Provinsi Sumatera Selatan. Analisis yang dilakukan pada penelitian ini adalah pemetaan bawah permukaan, analisis petrofisik dan perhitungan cadangan hidrokarbon. Reservoir yang menjadi target penelitian adalah lapisan Batupasir yang termasuk dalam Formasi Talang Akar yang berumur Oligosen Akhir – Miosen Awal. Berdasarkan analisis data seismik, struktur yang berkembang di daerah penelitian adalah sesar normal yang berarah timurlaut – baratdaya dan sesar naik berupa sesar reverse yang berarah baratlaut – tenggara. Hasil analisis kuantitatif pada lapisan Sand A diperoleh rata-rata porositas 25%, dan rata-rata saturasi air 23%, sedangkan Sand B diperoleh harga rata-rata porositas sebesar 18% dan rata-rata saturasi air 25%. Dari hasil analisis didapatkan kontak fluida pada Sumur AJ-1 dimana Gas Water Contact (GWC) berada pada kedalaman 1328 mbpl, Gas Oil Contact (GOC) pada kedalaman 1340 mbpl, dan Oil Water Contact (OWC) pada kedalaman 1348 mbpl. Berdasarkan hasil perhitungan cadangan dengan menggunakan metode volumetrik, dari reservoir Sand A diperoleh besarnya Original Gas In Place (OGIP) sebesar 329,98 Bscf dan estimasi cadangan yang dapat diproduksi sebesar 277,18 Bscf. Sedangkan hasil perhitungan cadangan dari reservoir Sand B diperoleh besarnya Original Gas In Place (OGIP) sebesar 334,46 Bscf, dan estimasi cadangan yang dapat diproduksi sebesar 280,94 Bscf, serta diperoleh juga besarnya Original Oil In Place (OOIP) sebesar 72,8 MMStb, dan estimasi cadangan yang dapat diproduksi sebesar 25,48 MMstb.

Abtrak (Bhs. Inggris)

"MHD" field generally included in the South Sumatra Basin, South Sumatra Province. The analysis performed in this study is subsurface mapping, petrophysical analysis and hydrocarbon reserves calculation. Reservoir being targeted research was sandstone layer which is included in the Talang Akar Formation Late Oligocene - Early Miocene. Based on seismic data analysis, developing structure in the area of research are normal faults with northeast–southwest trends, and reverse fault with northwest–southeast trends. Results of quantitative analysis at Sand A layer obtained an average porosity of 25%, and the average water saturation of 23%, while Sand B average price obtained porosity of 18% and an average water saturation of 25%. Based on analysis of fluid contact in the well AJ-1 wherein Gas Water Contact (GWC) is located at a depth of 1328 mbpl, Gas Oil Contact (GOC) at a depth of 1340 mbpl, and Oil Water Contact (OWC) at a depth of 1348 mbpl. Based on the calculation of the reserve reservoir Sand A obtained magnitude Original Gas In Place (OGIP) amounted as big as 329,98 BSCF and reserve estimation which can be produced as big as 277,18 BSCF. While the results of the calculation of reserves of the reservoir Sand B obtained magnitude Original Gas In Place (OGIP) amounted as big as 334,46 BSCF, and estimation of reserves that can be produced as big as 280,94 BSCF, and obtained also the magnitude of Original Oil In Place (OOIP) as big as 72,8 MMSTB, and the estimation of reserves that can be produced as big as 25,48 MMSTB.

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