scholarly journals The heat flow, thermal history of the oil source Lower Jurassic Togurskaya suite and oil-and-gas potential of the Paleozoic of the Koltogor mezodepression(southern segment of the Koltogor-Urengoy paleorift)

2019 ◽  
Vol 41 (5) ◽  
pp. 128-155
Author(s):  
G. A. Lobova ◽  
T. E. Luneva ◽  
V. I. Isaev ◽  
A. N. Fomin ◽  
Ju. V. Korzhov ◽  
...  
Keyword(s):  
Heat Flow ◽  
Thermal History ◽  
Oil And Gas ◽  
Lower Jurassic ◽  
History Of ◽  
Oil Source ◽  
Gas Potential

scholarly journals OIL AND GAS MODELING GENERARION IN THE JURASSIC SEDIMENTS IN THE SOUTH-EASTERN OF THE WEST SIBERIAN PETROLEUM PROVINSE

2021 ◽  
Vol 2 (1) ◽  
pp. 38-43
Author(s):  
Elena A. Glukhova ◽  
Pavel I. Safronov ◽  
Lev M. Burshtein
Keyword(s):  
Heat Flow ◽  
Thermal History ◽  
Oil And Gas ◽  
Flow Density ◽  
Basin Modeling ◽  
Heat Flow Density ◽  
The West ◽  
One Dimensional ◽  
History Of ◽  
The One

The article presents the one-dimensional basin modeling performed in four wells to reconstruct the thermal history of deposits and reconstruct the effective values of the heat flow density.

scholarly journals Mesozoic-Cenozoic climate and the geothermal regime of the oil source Kiterbyutskaya suite of the Arctic region of Western Siberia

Georesursy ◽  
2018 ◽  
Vol 20 (4) ◽  
pp. 386-395 ◽  
Author(s):  
V. Isaev ◽  
A. Iskorkina ◽  
G. Lobova ◽  
T. Luneva ◽  
E. Osipova ◽  
...  
Keyword(s):  
Heat Flow ◽  
A Priori ◽  
Arctic Region ◽  
Lower Jurassic ◽  
The Arctic ◽  
Yamal Peninsula ◽  
Deep Well ◽  
History Of ◽  
Priori Information ◽  
Oil Source

Using the example of paleotemperature modeling of the Kiterbyutskaya suite of the Mesozoic-Cenozoic section, opened by a deep well at the Bovanenkovskoye oil – gas condensate field (Yamal Peninsula), the influence of paleoclimate factors on the thermal history of the Lower Jurassic oil source deposits, the duration of the main phase of petroleum formation and the value of the paleothermometric maximum and oil generation density. The original computer methodology is described, which takes into account the parameters of the tectonic and sedimentation history, as well as the history of the thermophysical properties of the sedimentary formation, including permafrost and glaciers, and not requiring a priori information about the values and nature of the deep heat flow is given. The features of the model parametrization are shown. The reliability of the results is confidently controlled by the geophysical criterion of the “discrepancy”, comparison with experimental data on the heat flow, and consistency with the drilling data. The presentation is based on the works of the Tomsk School of Geothermics, carried out as part of the development of a methodological base of geothermics as a geophysical oil prospecting method.

scholarly journals Indicator signs of carbonate microbialites in black shale formations: isotopic composition and biomarkers

2021 ◽  
Vol 11 ◽  
pp. 55-61
Author(s):  
M. A. Tugarova ◽  
Keyword(s):  
Isotopic Composition ◽  
Black Shale ◽  
Oil And Gas ◽  
Source Rocks ◽  
Unconventional Reservoirs ◽  
Shale Formations ◽  
Geological Processes ◽  
History Of ◽  
Oil Source ◽  
Gas Potential

Carbonate rocks represented by nodules, lenses, layers of different morphology and length are typical for the black shale formations of different ages. They are of the greatest interest in oil source rocks as indicators of complex and not always unambiguously interpreted geological processes. A special place among these sedimentary bodies is occupied by microbialites, which indicate suppression of development of marine organic biocenoses, and often reflect emanation processes in ancient strata. Proof of these phenomena is fundamentally important for predicting and assessing the oil and gas potential of unconventional reservoirs. On the example of carbonate solids of Triassic and Jurassic black shale formations, we present a complex analytical method to determine the microbial biochemical genesis of rocks on the base of the isotopic composition of carbon and oxygen, together with the hydrocarbon molecular markers of organic matter. The geochemical features of the isolated microbialites suggest that they are resulted from a complex history of black shale formations, which reflects both background lithogenetic transformations and superimposed processes, including high-temperature hydrothermal ones.

scholarly journals Heat flow and presence of oil and gas (the Yamal peninsula, Tomsk region)

Georesursy ◽  
2019 ◽  
Vol 21 (3) ◽  
pp. 125-135
Author(s):  
Valery I. Isaev ◽  
Galina A. Lobova ◽  
Alexander N. Fomin ◽  
Valery I. Bulatov ◽  
Stanislav G. Kuzmenkov ◽  
...  
Keyword(s):  
Heat Flow ◽  
Western Siberia ◽  
Oil And Gas ◽  
Sedimentary Cover ◽  
The Arctic ◽  
Yamal Peninsula ◽  
Flow Density ◽  
Positive Anomaly ◽  
Tomsk Region ◽  
History Of

The possibilities of Geothermy as a geophysical method are studied to solve forecast and prospecting problems of Petroleum Geology of the Arctic regions and the Paleozoic of Western Siberia. Deep heat flow of Yamal fields, whose oil and gas potential is associated with the Jurassic-Cretaceous formations, and the fields of Tomsk Region, whose geological section contents deposits in the Paleozoic, is studied. The method of paleotemperature modeling was used to calculate the heat flow density from the base of a sedimentary section (by solving the inverse problem of Geothermy). The schematization and mapping of the heat flow were performed, taking into account experimental determinations of the parameter. Besides, the correlation of heat flow features with the localization of deposits was revealed. The conceptual and factual basis of research includes the tectonosedimentary history of sedimentary cover, the Mesozoic-Cenozoic climatic temperature course and the history of cryogenic processes, as well as lithologic and stratigraphic description of the section, results of well testing, thermometry and vitrinite reflectivity data of 20 deep wells of Yamal and 37 wells of Ostanino group of fields of Tomsk region. It was stated that 80 % of known Yamal deposits correlate with anomalous features of the heat flow. Bovanenkovskoe and Arkticheskoe fields are located in positive anomaly zones. 75 % of fields of Ostanino group relate to anomalous features of the heat flow. It is shown that the fields, which are characterized by existence of commercial deposits in the Paleozoic, are associated with the bright gradient zone of the heat flow. The forecast of commercial inflows in the Paleozoic for Pindzhinskoe, Mirnoe and Rybalnoe fields is given. The correlation between the intensity of naftidogenesis and the lateral inhomogeneity of the deep heat flow is characterized as a probable fundamental pattern for Western Siberia.

Heat flow and thermal history of the South China Sea

2001 ◽  
Vol 126 (3-4) ◽  
pp. 211-220 ◽  
Author(s):  
Lijuan He ◽  
Kelin Wang ◽  
Liangping Xiong ◽  
Jiyang Wang
Keyword(s):  
Heat Flow ◽  
South China Sea ◽  
South China ◽  
Thermal History ◽  
The South China Sea ◽  
The South ◽  
China Sea ◽  
History Of ◽  
History Of The South

A NEW METHOD FOR ASSESSING THE THERMAL HISTORY OF SEDIMENTS: A CASE STUDY FROM THE EXMOUTH PLATEAU IN NORTHWESTERN AUSTRALIA.

1990 ◽  
Vol 30 (1) ◽  
pp. 364
Author(s):  
Robert Alexander ◽  
Roger Marzi ◽  
Robert I Kagi
Keyword(s):  
Heat Flow ◽  
Thermal History ◽  
Laboratory Studies ◽  
Molecular Processes ◽  
Sediment Column ◽  
Exmouth Plateau ◽  
History Of ◽  
Northwestern Australia ◽  
Geochemical Constraints

The Jupiter-l well on the Exmouth Plateau is presented as a case study to illustrate the use of a new molecular geochemical approach to assessing thermal history. This approach involves measuring the extent to which six independent molecular processes have occurred in a sediment column. The rates at which these molecular processes occur are well known from controlled laboratory studies; by measuring the extent to which each molecular process has occurred at a number of points in the sediment column, it is possible to identify a thermal history which is consistent with these geochemical constraints and the known geology of the sediment column. In the present study, this approach revealed that the heat flow which best accounts for present day temperatures and maturity involved a comparatively low heat flow of not more than 1.1 HFU until approximately 88 Ma before present, followed by an increase to 1.3 HFU which has continued until the present day.

Subsidence and thermal history of Queen Charlotte Basin

1983 ◽  
Vol 20 (1) ◽  
pp. 135-159 ◽  
Author(s):  
C. J. Yorath ◽  
R. D. Hyndman
Keyword(s):  
Heat Flow ◽  
Thermal History ◽  
Vitrinite Reflectance ◽  
Surface Profile ◽  
Fault System ◽  
Model Calculations ◽  
Geological Evidence ◽  
Queen Charlotte Islands ◽  
Crustal Thinning ◽  
History Of

A tectonic model for the formation, subsidence, and thermal history of Queen Charlotte Basin is developed. Based upon regional geological and geophysical data, subsidence data from offshore wells in Hecate Strait and Queen Charlotte Sound, and thermal criteria derived from present heat flow and vitrinite reflectance information, Queen Charlotte Basin is seen to have resulted from two distinct mechanisms. (1) During a period of broad regional uplift, rifting and crustal extension occurred in Queen Charlotte Sound up to about 17 Ma ago and the Queen Charlotte Islands were displaced northwards toward their present position by transcurrent motion along the Louscoone Inlet – Sandspit fault system. The rifting generated a significant thermal anomaly and a restricted deep basin as a consequence of crustal thinning and subsequent thermal cooling. (2) Beginning about 6 Ma ago, oblique underthrusting commenced along the margin, resulting in flexural uplift of the western part of the Queen Charlotte Islands and companion subsidence in Hecate Strait and Queen Charlotte Sound. The underthrusting caused rapid cooling of the old rift basins. This phase of subsidence has continued at a decreasing rate until the present.The tectonically generated subsidence in the basin has been estimated by correcting the well data for sediment compaction, paleo water depth, and sediment loading effects. At the site of the Harlequin well in the Queen Charlotte Sound rift, with the termination of extension and associated volcanism, the basin was 1500–2000 m deep and contained little sediment. Model calculations show that this depth is consistent with the estimated extension of about 70 km and a resulting crustal thinning to 8–10 km.Models for the lithosphere flexure generated by underthrusting are constrained by the geological evidence for uplift and erosion of over 5 km of material from the western portion of the Queen Charlotte Islands and the exponentially slowing subsidence to a present regional basement depth of 2 km in Hecate Strait. An excellent fit to the pre-erosion surface profile onshore and pre-Skonun basement surface offshore is obtained with a model having underthrusting on a 30° thrust at a 10 mm year−1 orthogonal component of convergence. The flexure generated by underthrusting, which is particularly well documented in the Queen Charlotte region, appears to be a feature of most subduction zones.Vitrinite reflectance data, present heat flow estimates from the wells, and thermal modelling indicate that the heat flux in Queen Charlotte Basin was much higher in the past than at present, particularly in Queen Charlotte Sound. A model is proposed with high heat flow generated by rifting prior to 17 Ma ago, followed by cooling from the underthrust oceanic lithosphere.

scholarly journals Beo v1.0: numerical model of heat flow and low-temperature thermochronology in hydrothermal systems

2019 ◽  
Vol 12 (9) ◽  
pp. 4061-4073 ◽  
Author(s):  
Elco Luijendijk
Keyword(s):  
Heat Flux ◽  
Heat Flow ◽  
Low Temperature ◽  
Thermal History ◽  
Land Surface ◽  
Hydrothermal Activity ◽  
Hydrothermal Systems ◽  
Conductive Heat ◽  
History Of ◽  
Spring Temperatures

Abstract. Low-temperature thermochronology can provide records of the thermal history of the upper crust and can be a valuable tool to quantify the history of hydrothermal systems. However, existing model codes of heat flow around hydrothermal systems do not include low-temperature thermochronometer age predictions. Here I present a new model code that simulates thermal history around hydrothermal systems on geological timescales. The modelled thermal histories are used to calculate apatite (U–Th)∕He (AHe) ages, which is a thermochronometer that is sensitive to temperatures up to 70 ∘C. The modelled AHe ages can be compared to measured values in surface outcrops or borehole samples to quantify the history of hydrothermal activity. Heat flux at the land surface is based on equations of latent and sensible heat flux, which allows more realistic land surface and spring temperatures than models that use simplified boundary conditions. Instead of simulating fully coupled fluid and heat flow, the code only simulates advective and conductive heat flow, with the rate of advective fluid flux specified by the user. This relatively simple setup is computationally efficient and allows running larger numbers of models to quantify model sensitivity and uncertainty. Example case studies demonstrate the sensitivity of hot spring temperatures to the depth, width and angle of permeable fault zones, and the effect of hydrothermal activity on AHe ages in surface outcrops and at depth.

Sign in / Sign up

Export Citation Format

Share Document