Anggraeni, Widia and Mulyatno, Bagus Sapto and Sarkowi, Muh and Nursina, Mawar Indah and Syafriya, Andri (2018) 3D prestack simultaneous inversion and lame-parameter extraction applied to discriminate the lithology and pore-fluid: Case study—Gumai Formation, Jambi Sub-Basin, South Sumatra. In: the SEG 2018 Annual Meeting in Anaheim, CA USA, 14-19 Oktober 2018, Anaheim California USA.

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Abstract

The Gumai Formation facies architecture is complex and formed by interbedded sand and shale. The formation has various roles in the Jambi Sub-Basin petroleum system acting as the regional seal, source rock, and reservoir rock. This research was carried out in order to discriminate lithology and detecting pore fluid distribution using Pre-stack Simultaneous Inversion and LambdaMuRho Extraction in the Gumai Formation, Jambi sub-basin which is supported by the proven discoveries of hydrocarbon (gas) while Drill Stem Testing (DST). The data consists of 3D seismic partial-angle stacks and well log data which are used as input to three-term Fatti equation to transform the seismic trace into reflectivity. Further, reflectivity from different angle stacks are simultaneously inverted to obtain P-impedance (Zp), S-Impedance (Zs) and Density (ρ). The simultaneous inversion results for gas bearing sand reservoir encased in shale gave low P-Impedance, low S-Impedance and low density. The Lame parameter extraction, resulted low LambdaRho (Incompressibility) and relatively high MuRho (Rigidity). Based on these values, combined maps of P-impedance (Zp), S-Impedance (Zs), Density (ρ), LambdaRho (γρ) and MuRho (μρ) show the distribution of the prospective areas for gas bearing sand reservoir towards western part of the study area

Item Type:	Conference or Workshop Item (Poster)
Subjects:	T Technology > T Technology (General)
Divisions:	Fakultas Teknik (FT) > Prodi Teknik Geofisika
Depositing User:	MUHAMMAD S
Date Deposited:	27 May 2020 01:49
Last Modified:	27 May 2020 01:49
URI:	http://repository.lppm.unila.ac.id/id/eprint/20607

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