Integrating 3D seismic interpretation, well log analysis and static modelling for characterizing the Late Miocene reservoir, Ngatoro area, New Zealand

Abdelmaksoud, Ahmed; Radwan, Ahmed A.

doi:10.1007/s40948-022-00364-8

Cited by 24 publications

(2 citation statements)

References 60 publications

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“…The lithology, petrophysical characteristics, and facies interpretation of subsurface reservoirs were investigated using a variety of well logging approaches [ 9 , [13] , [14] , [15] , [16] ]. Conventional techniques of determining lithology from well log data [ 17 , 18 ] and the application of bar graphs and bi-variate statistical analysis [ 13 , [19] , [20] , [21] ] have been extensively employed.…”

Section: Introductionmentioning

confidence: 99%

A new approach to predict carbonate lithology from well logs: A case study of the Kometan formation in northern Iraq

Hussein,

Mansurbeg,

Bábek

2024

Heliyon

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Section: Introductionmentioning

confidence: 99%

A new approach to predict carbonate lithology from well logs: A case study of the Kometan formation in northern Iraq

Hussein,

Mansurbeg,

Bábek

2024

Heliyon

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“…Thus, a detailed investigation of the primary source rock characteristics (e.g., organic matter quantity and maturity) as well as identification of the kerogen composition are crucial for understanding the generation and expulsion potentiality of the source rock. The Taranaki Basin is the most petroliferous and the only hydrocarbon-producing sedimentary basin in New Zealand, where the majority of petroleum reserves are contained in a broadly NE-SW trending fairway of the Paleogene shallow marine as well as Pliocene turbiditic sandstones (Figure 1) [13][14][15][16][17][18][19][20][21]. Based on previous geochemical studies, it has been revealed that oils are primarily sourced from the terrigenous organo-facies in the Late Cretaceous-Paleocene source rocks that rest unconformably above the basement complex.…”

Section: Introductionmentioning

confidence: 99%

Lithofacies Controls on Hydrocarbon Generation Potentiality of the Syn-Rift Late Cretaceous Rakopi Deltaic Facies in the North-Eastern Offshore Part of Taranaki Basin, New Zealand

Leila,

Radwan,

Abdel-Fattah

2023

Minerals

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The Taranaki Basin in New Zealand presents the most promising territory for strategies of hydrocarbon exploration and development. This basin contains multiple source rock levels in its sedimentary successions formed during syn- and post-rift periods. The deepest source rocks, found in the Rakopi Formation, were deposited in deltaic to deep marine environments and consist of gas-prone coal and organic-rich mudstone lithofacies. However, questions remain about the preservation of their organic carbon. This study integrates various organic geochemical analyses (such as Rock Eval pyrolysis, kerogen petrography, and biomarkers) to assess the hydrocarbon potential of the Rakopi coal and mudstone lithofacies. The organic carbon in Rakopi coals and mudstones originated from oxygenated bottom water, but swift burial during the initial rifting phase facilitated the preservation of organic materials. Rakopi coals are less mature than the mudstone facies and contain a mixture of desmocollinite, suberinite, and resinite macerals. In contrast, the mudstone lithofacies are enriched in liptodetrinite. The maceral mixture in the coal led to its elevated hydrogen index and likely facilitated early expulsion of liquid hydrocarbon phases. Regular steranes, diasteranes, and C29 sterane isomers distribution in the coal and mudstone extracts highlighted a greater terrestrial input in the coals, whereas significant marine input is observed in the mudstone extracts. Biomarkers in the coal and mudstone extracts are similar to some nearby oils discoveries in the Taranaki Basin, thereby confirming oil generation from both coal and mudstone lithofacies in the Rakopi Formation. These findings underscore the potential of liptinite-rich coals to generate liquid hydrocarbon phases at marginal oil maturity levels.

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Seismic sequence stratigraphy and depositional evolution of the Cretaceous-Paleogene sedimentary successions in the offshore Taranaki Basin, New Zealand: implications for hydrocarbon exploration

et al. 2022

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The seismic stratigraphy and sedimentary facies of the Cretaceous and Paleogene sedimentary successions in north-eastern offshore part of Taranaki Basin, New Zealand have been investigated in order to unravel their depositional evolution and identify the potential hydrocarbon plays. Interpretation of regional seismic lines covering the entire shelf-slope and deepwater regions as well as integrating seismic and sedimentary facies allows the identification of several seismic-stratigraphic sequences within the studied successions. Early Cretaceous syn-rift successions (C1 sequence) were deposited in the structural lows near the present-day slope as swamp and marsh facies changing basinwards into turbidites and marine shales. The post-rift Cretaceous sequences (C2, C3 sequences) started with the progradation of the Taranaki delta (C2A-C2D units) followed by sedimentation of the transgressive C3A-E facies accumulated in response to thermal subsidence and high-rates of clastic supply. Extensive shelf conditions prevailed during the deposition of C2 and C3 Cretaceous sequences continued during the Paleogene with deposition of uniform marine shales throughout the basin. Rates of sediment supply substantially decreased during Oligocene prompting the deposition of marine micrite-rich carbonate. Variation in fossil content confirms the occurrence of several cycles of sea level fluctuations and episodic variations in terrigenous input. Organic-rich facies could be associated with the prograding clinoforms of the C2B unit and probably contain, basinward, large amount of gas and oil prone kerogen. The transgressive facies of C2D unit may also contain organic-rich shales basinward and coal near the present day Taranaki shelf. Potential reservoirs are hosted on the C3 transgressive estuarine sandstones. Paleogene mudstones are excellent regional seals for the hydrocarbons generated and trapped in the underlying Late Cretaceous facies.

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Integrating 3D seismic interpretation, well log analysis and static modelling for characterizing the Late Miocene reservoir, Ngatoro area, New Zealand

Cited by 24 publications

References 60 publications

A new approach to predict carbonate lithology from well logs: A case study of the Kometan formation in northern Iraq

A new approach to predict carbonate lithology from well logs: A case study of the Kometan formation in northern Iraq

Lithofacies Controls on Hydrocarbon Generation Potentiality of the Syn-Rift Late Cretaceous Rakopi Deltaic Facies in the North-Eastern Offshore Part of Taranaki Basin, New Zealand

Seismic sequence stratigraphy and depositional evolution of the Cretaceous-Paleogene sedimentary successions in the offshore Taranaki Basin, New Zealand: implications for hydrocarbon exploration

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