Mulyatno, Bagus Sapto and normansyah, normansyah and Pujiriyanto, Andry and Syafriya, Andri ANALISIS AMPLITUDE VERSUS OFFSET UNTUK ESTIMASI KANDUNGAN RESERVOAR DI DAERAH AB, CEKUNGAN SUMATERA TENGAH. In: Prosiding Seminar Sehari Hasil-Hasil Penelitian & Pengabdian Kepada Masyarakat, Oktober 2009.

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Abstract

AVO is based on principle of amplitude change versus offset configured by geophone and sources point (offset). AVO analysis that is based on the theory of reflection coefficient as a function of offset has been introduced by Zoeppritzs in 1919 and further development in algorithms for simplification in computation modeling of amplitude, and amplitude show reflection coefficient change. So that, relation between amplitude and offset has been got. In general amplitude decreases as offset increases. AVO anomaly occurs when gas fills reservoir, which amplitude increases as offset increases. In this research, result of AVO analysis in 3D seismic data can identify gas in reservoirs at A and B area, it can be identified from relation between normal reflection coefficient (intercept) and gradient of amplitude change versus offset. Gas in reservoir is identified negative intercept and negative gradient, it show amplitude increases as offset increases. Result of AVO analysis from this research has been supported by result of wells analysis. In X area, reservoir is gas sand in Lower Pematang formation, this result has been supported by result of log analysis from A-1 and A-2 wells. In Y area, reservoir is gas sand in Upper Menggala formation, this result has been supported by result of log analysis from B-1,B-2 and B-3 wells.

Item Type:	Conference or Workshop Item (Paper)
Subjects:	G Geography. Anthropology. Recreation > GB Physical geography
Depositing User:	BAGUS SAPT
Date Deposited:	31 Aug 2026 02:59
Last Modified:	31 Aug 2026 02:59
URI:	http://repository.lppm.unila.ac.id/id/eprint/54924

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