INVERSI IMPEDANSI ELASTIK UNTUK MENGESTIMASI KANDUNGAN RESERVOIR BATUPASIR LAPANGAN “Ve” FORMASI CIBULAKAN CEKUNGAN JAWA BARAT UTARA
| Main Authors: | Aisyah, Veratania; Jurusan Fisika, Fakultas Sains dan Matematika Universitas Diponegoro, Harmoko, Udi; Jurusan Fisika, Fakultas Sains dan Matematika Universitas Diponegoro, Mualimin, Mualimin; Divisi Renbang Lapangan, PT. Pertamina EP Region Jawa |
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| Format: | Article info application/pdf eJournal |
| Bahasa: | eng |
| Terbitan: |
BERKALA FISIKA
, 2013
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| Online Access: |
http://ejournal.undip.ac.id/index.php/berkala_fisika/article/view/5008 http://ejournal.undip.ac.id/index.php/berkala_fisika/article/view/5008/4541 |
Daftar Isi:
- An Elastic Impedance inversion was carried out to determine sandstone reservoir characterization of “Ve” Field Cibulakan Formation, Northwest Java Basin. There are many steps of data processing to analize a well log data in order to get sensitive angle of lithologic characterization. Mudrock Line equation was applied to obtain Vs log data of the research target zone. The next step, we did Well seismic tie toobtain horizon that approach the real geological zone. Initial model was made by used a control well andDST 5 horizon. Sparse Spike inversion gives the most accurate result than two other one. According to thevolume inversion, we plotted to a map show the contrast of sandstone lithology. Based on Elastic Impedanceinversion analysis, we estimate the rangeof sandstone reservoir impedance:1348 (m/s)gr/cc – 1365(m/s)2gr/cc. Crossplot analysis result between log Elastic Impedance and log Gamma Ray shows that 35isthe best angle of the sandstone and shale lithologic sparation.Keyword: Elastic Impedance, AVO, inversion, Mudrock Lin