Adrian Prianggoro, Nico and Dewanto, Ordas and Karyanto, Karyanto and Aziz Permana, Abdul (2017) PEMODELAN ZONA PROSPEK RESERVOAR BERDASARKAN DATA SEISMIK DAN ANALISIS PETROFISIKA UNTUK MENENTUKAN CADANGAN HIDROKARBON AREA OUTSTEP LAPANGAN GEO, CEKUNGAN SUMATERA SELATAN. Jurnal Geofisika Eksplorasi. (Submitted)

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Abstract

Geo field already known accumulate the hydrocarbon that identified by gas on carbonate reservoir of Baturaja formation. According to recovery factor data, gas production in South Sumatera basin already increase into 80% of production. By modeling the reservoir prospect zone and analyzing the petrophysical data, the new able reservoir prospect can be identified, also, the hydrocarbon reserve can be calculated in Geo field. Based on a Direct Hydrocarbon Index analysis, the flat spot and gas chimney are visible on seismic section data in outstep area of Geo field.This indication are developed by doing acoustic impedance inversion as a function of seismic data processing. The main output of this inversion is porous zone map as a result of two map interpretation which is acoustic impedance map and density map as an attribute function on this inversion. Based on that map, with cutoff acoustic impedance value 10000 m/s*gr/cc and density cutoff 2,34 gr/cc, identified there is a prospect area in outstep zone indicated by low acoustic impedance with 6492,2m/s*gr/cc – 7772,4m/s*gr/cc value, also, density value range in 1,98gr/cc – 2,34gr/cc. Isopach map, Porosity map and water saturation map are generated by spreading the value on lateral function using guide the density map and petrophysical analysis result. By the value of reservoir property based on the map, hydrocarbon reserve can be calculated. Bgi input value is 0.0089 SCF/cutf, volume bulk value 19898,1977 acre.ft, porosity value 0,156543565% and water saturation average value 0,382105%, gas reserve volume on outstep area predicted about 9,42023537 BSCF.

Item Type: Article
Subjects: Q Science > QC Physics
Q Science > QE Geology
Divisions: Fakultas Teknik (FT) > Prodi Teknik Geofisika
Depositing User: ORDAS DEWA
Date Deposited: 15 Nov 2017 06:36
Last Modified: 15 Nov 2017 06:36
URI: http://repository.lppm.unila.ac.id/id/eprint/5365

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