sedimentology and stratigrahic stacking patterns of the peciko field main zone, lower kutei basin, east kalimantan, indonesia

Cibaj, Irfan; Lambert, B.; Ashari, Untung; Giriansyah, Bayu; Schulbaum, Laurent; Imbert, Patrice; Cordelier, Philippe

doi:10.29118/ipa.46.14.g.141

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“…The outcrops around Samarinda (Cibaj, 2013Marshall et al, 2015), well-logs patterns, cuttings, and core data from the onshore/offshore wells (Cibaj et al, 2014 and2015), and key biostratigraphy markers (Kadar, 1998;Cibaj, 2009;Morley et al, 2011 andand Morley, 2014) had been integrated to define key sequence boundaries, parasequence sets with their associated facies. A scheme of parasequence-depositional sets explaining the megasequences of highstand system tract (HST), lowstand system tract (LST), and transgressive system tract (TST); van Wagoner et al, 1988.…”

Section: Data (Constraint and Benefit)mentioning

confidence: 99%

Depositional Environment of Deep-Water Fan Facies: A Case Study of the Middle Miocene Interval at the Kutei and North Makassar Basins

Nugrahanto¹,

Syafri²,

Muljana³

2021

JGSM.Geologi

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Massive exploration effort in the study area was conducted in 1996-2014 when deep-water drilling campaign found significant oil and gas discoveries but yet to optimally reach the middle Miocene deep-water sandstone reservoirs. Outcrops, well bores and 2D-seismic data had been incorporated in this study. Datum age from several taxon indicators have been utilized to correlate and unify various markers across the study area into four key biostratigraphy markers: M40, M45, M50, and M65. These four markers are at that point tied to the 2D seismic data in the act of the main horizons in conducting the seismic stratigraphy analysis over the study area not reached by wells. Identifying candidate of sub-regional sequence boundaries onshore and offshore that correspond with relative sea-level drops are the main result of this study. These results were integrated to generate the deep-water fan facies of the middle Miocene's gross depositional environment (GDE) maps, which generally show prograding succession easterly in the various shelf-breaks shifting laterally. The angle of slope and the horizontal length of the shelf-to-slope breaks significantly change from the Middle to Late Miocene until Recent time.Keywords: GDE, deep-water fan, Middle Miocene, Kutei, North Makassar.

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