A New Insight of Talang Akar Formation in the Ridho Field, North Palembang Sub-basin, Indonesia: An Integrated Approach

نویسندگان

چکیده

The synrift sandstone deposits of Eo-Oligocene Lemat (LMF) and Oligo-Miocene Talang Akar Formations (TAF) are the most well -known hydrocarbon reservoirs in South Sumatra Basin, Indonesia. However, only limited studies on TAF North Palembang Sub-Basin have been published. In Ridho field, is characterized by fining-up sequences inter bedded, fine to medium-grained sandstones shales overlain a coal layer as top marker, while LMF comprises continuous blocky-shaped, medium coarse-grained, conglomeratic sandstones.Previous lithostratigraphy-driven sand correlation between wells has created difficulties understanding geology producing consistent correlation, especially within TAF. order define chronostratigraphy-based interpret depositional environment LMF, an integration palynological, core study petrophysical analysis was performed. result this integrated approach demonstrates aligned hypotheses. occurrence pollen Meyeripollis naharkotensis Florschuetzia trilobata along studied suggest Late Oligocene age. palynology subdivides into three backmangrove-intertidal units with increase marine influence defining transgression transgressive event identified sample lesser tidal influx sedimentary structures such ripple, mudlayer, flaser also finer grained at Furthermore, based evaluation, better quality lower NTG (net -to gross) near confirms retrogradational formation.The new unit definitions from current provide more terms thickness characteristics for future modeling purposes.

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ژورنال

عنوان ژورنال: Berita Sedimentologi

سال: 2021

ISSN: ['0853-9413', '2807-274X']

DOI: https://doi.org/10.51835/bsed.2020.45.1.49