Thermal History and Hydrocarbon Maturity Study in the Norton Basin, Alaska

1992 ◽  
Vol 10 (6) ◽  
pp. 402-421 ◽  
Author(s):  
Z. Yu ◽  
Y. Li ◽  
I. Lerche
Keyword(s):  
Fluid Flow ◽  
Late Miocene ◽  
Thermal Gradient ◽  
Vitrinite Reflectance ◽  
Hydrocarbon Generation ◽  
One Dimensional ◽  
Thermal Peak ◽  
Initial Stage ◽  
History Of ◽  
Reflectance Data

Two COST wells in the Norton Basin of Alaska were examined using a one-dimensional quantitative dynamic model (1-D). By inversion of vitrinite reflectance data with the present day thermal gradient in the basin, the paleothermal history of the basin was reconstructed and showed two high thermal peaks, one during the initial stage of basin development (60–50 MaBP) and the other at late Miocene (15–5 MaBP). The early thermal peak corresponded to thinning of the lithosphere and subsidence with upwelling of the hot asthenosphere, and the more recent thermal high was caused by the subsidence and volcanic activity during late Miocene. The Norton Basin is thermally mature with hydrocarbon generation occurring in 15–2 MaBP. Modeling the fluid flow and geopressure development using a two-dimensional fluid flow/compaction model in the basin shows that the directions of fluid movement are both vertical and towards the Yukon Horst, a main horst structure in the basin, suggesting that the hydrocarbons might accumulate in structures around the Yukon Horst and in stratigraphic traps within the basin, which are expected to be common because of the depositional variation of the various facies.

POST-RIFT TECTONIC SUBSIDENCE AND PALAEO-WATER DEPTHS IN THE NORTHERN CARNARVON BASIN, WESTERN AUSTRALIA

2001 ◽  
Vol 41 (1) ◽  
pp. 367 ◽  
Author(s):  
A.R. Kaiko ◽  
A.M. Tait
Keyword(s):  
Vitrinite Reflectance ◽  
Tectonic Subsidence ◽  
Hydrocarbon Generation ◽  
Basin Inversion ◽  
Sedimentary Architecture ◽  
History Of ◽  
Northern Carnarvon Basin ◽  
Migration Pathways ◽  
Water Depths ◽  
Carnarvon Basin

The subsidence history of the Northern Carnarvon Basin has been dominated by simple thermal sag following the creation of the Exmouth, Barrow and Dampier Sub-basins by Early to Middle Jurassic rifting. This conclusion follows from the recognition of vitrinite reflectance suppression, which removes the need for recent heating events, and from the use of seismic stratigraphy, rather than only palynology and micro-palaeontology, to determine palaeo-water depths.The simple thermal-sag model, related to Jurassic rifting, accounts for the post-rift sedimentary architecture of the Northern Carnarvon Basin, especially in areas of sediment starvation. It also has implications for the timing of hydrocarbon generation and the reconstruction of migration pathways. This work has re-emphasised the theoretical possibility of determining palaeo-water depths by adjusting one-dimensional basin models to fit simple thermal sag tectonic subsidence curves.Miocene uplift, in the order of several hundred metres, has caused local basin inversion, accentuated some preexisting structures and re-activated some faults causing hydrocarbon remigration, but has otherwise not affected the thermal history of the sediments.

GEOLOGY, SOURCE ROCKS AND HYDROCARBON GENERATION IN THE CLARENCE-MORETON BASIN

1982 ◽  
Vol 22 (1) ◽  
pp. 5
Author(s):  
A. R. Martin ◽  
J. D. Saxby
Keyword(s):  
Vitrinite Reflectance ◽  
Source Rocks ◽  
Geochemical Data ◽  
Hydrocarbon Potential ◽  
Hydrocarbon Generation ◽  
Tectonic Events ◽  
History Of ◽  
Rock Eval ◽  
Coal Measures ◽  
Migration Pathways

The geology and exploration history of the Triassic-Cretaceous Clarence-Moreton Basin are reviewed. Consideration of new geochemical data ('Rock-Eval', vitrinite reflectance, gas chromatography of extracts, organic carbon and elemental analysis of coals and kerogens) gives further insights into the hydrocarbon potential of the basin. Although organic-rich rocks are relatively abundant, most source rocks that have achieved the levels of maturation necessary for hydrocarbon generation are gas-prone. The exinite-rich oil-prone Walloon Coal Measures are in most parts relatively immature. Some restraints on migration pathways are evident and igneous and tectonic events may have disturbed potentially well-sealed traps. Further exploration is warranted, even though the basin appears gas-prone and the overall prospects for hydrocarbons are only fair. The most promising areas seem to be west of Toowoomba for oil and the Clarence Syncline for gas.

scholarly journals APPLICATION OF ONE-DIMENSIONAL PALEOTEMPERATURE MODELING TO ESTIMATE THE HYDROCARBON POTENTIAL OF CRETACEOUS SEDIMENTS OF THE MIDDLE AMUR SEDIMENTARY BASIN

2021 ◽  
Vol 40 (4) ◽  
pp. 87-98
Author(s):  
P.N. Prokhorova ◽  
◽  
E.P. Razvozzhaeva ◽  
V.I. Isaev ◽  
◽  
...  
Keyword(s):  
Oil And Gas ◽  
Sedimentary Basin ◽  
Gas Content ◽  
Hydrocarbon Potential ◽  
Hydrocarbon Generation ◽  
Gas Generation ◽  
One Dimensional ◽  
Middle Amur Sedimentary Basin ◽  
History Of ◽  
History Of Formation

The prospects of oil and gas content of the Cretaceous-Paleogene deposits of the Middle Amur sedimentary basin within the Pereyaslavsky graben are clarified on the basis of updated data on the tectonic-stratigraphic complexes of the basin using the method of one-dimensional paleotemperature modeling. It is established that throughout the history of formation of the studied part of Pereyaslavsky graben hydrocarbon generation could occur in lower Cretaceous sediments of the Assikaevsky and Alchansky/Strelnikovsky suites. The gas generation conditions for the Assykaevsky formation are still maintained.

Thermal anomalies in Late Mesozoic to Cenozoic basin deposits: What can they tell us about the separation of Greenland from Svalbard?

2020 ◽  
Author(s):  
Katrin Meier ◽  
Malte Jochmann ◽  
Martin Blumenberg ◽  
Jolanta Kus ◽  
Karsten Piepjohn ◽  
...  
Keyword(s):  
Late Miocene ◽  
North Atlantic Ocean ◽  
Vitrinite Reflectance ◽  
Distinct Pattern ◽  
The Arctic ◽  
Tectonic Activity ◽  
Fram Strait ◽  
Late Mesozoic ◽  
Heating Event ◽  
Reflectance Data

<p>Paleogene rocks from Svalbard yield exceptionally high vitrinite reflectance values up to 4%. Even higher vitrinite reflectance data, along with high bitumen reflectance values, are found from Cretaceous to Paleogene rocks of the conjugated northeast Greenland margin. These rocks also contain coke. Since the distinct pattern of high thermal maturity affects both sides of the Fram Strait, it is interpreted to be caused by a heating event during a time when Greenland and Svalbard / Eurasia were still contiguous or close together. As heating overprints Paleogene sediments, we further assume that it postdates the Eocene Eurekan deformation and is related to subsequent (trans-)tensional movement leading to continental separation and eventually to the opening of the Fram Strait. The Fram Strait is the only deepwater connection of the Arctic Ocean with other oceans and is key for understanding the climatic, tectonic and paleo-oceanographic evolution of the Arctic realm. Timing and trigger mechanisms for mid- to late Miocene tectonic activity around the Fram Strait are still poorly constrained. For this study, we will test the following hypotheses using apatite fission track and apatite (U-Th-Sm)/He thermochronology: (i) Heating of the west and east side of the Fram Strait occurred simultaneously and was caused by incipient sea floor spreading in the Fram Strait; (ii) heating occurred during mid- to late Miocene in relation to uplift/exhumation and enhanced magmatic activity. Vitrinite reflectance data indicate temperatures high enough to reset low-temperature thermochronometers, thus our results will allow to date the thermal event and to investigate how it was temporarily and spatially connected to the separation of Greenland from Svalbard and thus to the opening of the northern North Atlantic Ocean and the Fram Strait. First Data will be presented.</p>

EXPLORATION RESULTS, HYDROCARBON POTENTIAL AND FUTURE STRATEGIES FOR THE NORTHERN GALILEE BASIN

1993 ◽  
Vol 33 (1) ◽  
pp. 280 ◽  
Author(s):  
P.J. Hawkins ◽  
P.M. Green
Keyword(s):  
Vitrinite Reflectance ◽  
Immature Stage ◽  
Thermal Modelling ◽  
Hydrocarbon Potential ◽  
Hydrocarbon Generation ◽  
Reservoir Rocks ◽  
Stratigraphic Evolution ◽  
Coal Measures ◽  
Exploration Activity ◽  
Reflectance Data

Exploration activity in the northern Galilee Basin has been sporadic and is still at an immature stage. Recent geological investigations by the Queensland Department of Resource Industries have brought about a better understanding of the geological setting and stratigraphic evolution of the basin. These investigations also identified key source and reservoir units, determined maturation trends and delineated areas with hydrocarbon potential. The geological results indicate that the Aramac Coal Measures and Betts Creek beds contain the most favourable source and reservoir rocks. Thermal modelling of vitrinite reflectance data suggests that various parts of the basin reached maturity for hydrocarbon generation at different times. Integration of the geological results and thermal modelling has enabled exploration concepts to be developed for the basin. Application of these concepts has highlighted areas along the western margin of the Koburra Trough and eastern Maneroo Platform, and areas adjacent to the Cork Fault and the Wetherby Structure in the Lovelle Depression that warrant further exploration.

PATTERNS OF DIAGENESIS IN SOME AUSTRALIAN SEDIMENTARY BASINS

1977 ◽  
Vol 17 (1) ◽  
pp. 58 ◽  
Author(s):  
M. Shibaoka ◽  
A. J. R. Bennett
Keyword(s):  
Sedimentary Basins ◽  
Hydrocarbon Generation ◽  
Liquid Hydrocarbons ◽  
Geological Time ◽  
Oil Generation ◽  
History Of ◽  
And Migration ◽  
Gippsland Basin ◽  
Reflectance Data ◽  
Generation Activity

Three characteristic types of Australian sedimentary basins can be recognized on the basis of depth-reflectance curves. These may be designated as the Cooper, Sydney, and Gippsland Basin types. Characteristic depth-reflectance curves allow an assessment of the depositional and tectonic histories of sedimentary basins to be made. If the geological history and especially the stratigraphy of a basin is well known, it is possible to estimate the maturity which coal or kerogen would have attained at any past or present time. This maturity would be expressed by particular reflectance values of vitrinite. By making actual measurements of vitrinite and kerogen reflectance, the model of maturation can be tested. In this way it has been possible, for a number of basins, to estimate the geological period in which liquid hydrocarbons were generated and the rate at which the maturation process proceeded. The formation of an accumulation of oil is a matter of balance between the supply and loss of oil to and from traps, as well as persistence of traps and migration paths through geological time. The lapse of time after oil generation and the rate of generation are thus most important. The above-mentioned three types of sedimentary basins differ in these respects. Reflectance data can therefore be used not only to estimate the present state of organic maturity, but also in conjunction with the history of sedimentation in the basin, to interpret hydrocarbon generation activity in geological time.

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