Petroleum potential of the Riphean of the Siberian on hydrogeological data (on the example of the Kuyumbinskoe structure)

2020 ◽  
pp. 89-96
Author(s):  
K. E. Pitjeva
Keyword(s):  
Oil Content ◽  
Oil And Gas ◽  
Hydrocarbon Gases ◽  
Petroleum Potential ◽  
Gas Potential ◽  
Hydrogeological Data

In the article, when considering the prospects of oil and gas potential of the Riphean strata in Siberia as indicators of oil content, special attention is paid to hydrocarbon gases in sorbed form. Sorbed hydrocarbon gases are still poorly used as indicators of oil content, although they have significant prerequisites for this. Some of them can be understood by reading this article.

PETROLEUM EXPLORATION IN THE PROTEROZOIC BEETALOO SUB-BASIN, NORTHERN TERRITORY

1994 ◽  
Vol 34 (1) ◽  
pp. 674 ◽  
Author(s):  
Kevin Lanigan ◽  
Shane Hibbird ◽  
Sandy Menpes ◽  
John Torkington
Keyword(s):  
Oil And Gas ◽  
Northern Territory ◽  
Petroleum Exploration ◽  
Hydrocarbon Potential ◽  
Petroleum Potential ◽  
Drill Stem ◽  
Gas Potential ◽  
Unknown Sequence

Exploration over Roper Group outcrop in the McArthur Basin prompted Pacific Oil & Gas to investigate the petroleum potential of the Beetaloo Sub-basin, a 15 000 km2 Proterozoic depression concealed beneath Phanerozoic cover. Since 1989 drilling and seismic has identified a broadly flat-lying sequence with uplifted, eroded margins. A 3 500 m composite Proterozoic section consisting of three sandstone-to-mudstone sequences has been drilled. The lower two sequences comprise conformable units of the Mesoproterozoic upper Roper Group and unconformably overlying them is a previously unknown sequence comprising the informally labelled 'Jamison Sandstone' and 'Hayfield Mudstone', probably of Neoproterozoic age.Organic-rich intervals in the Roper Group mudstones range one to three per cent TOC in the Kyalla Member, and two to seven per cent TOC in the 'Middle' Velkerri Formation. Across most of the sub-basin the oil window lies within the Kyalla Member around 900–1350 m, while the 'Middle' Velkerri Formation is around 2 500 m and well into overmaturity, but may still have potential for gas. Potential reservoirs in the Bessie Creek, Moroak and 'Jamison' Sandstones, and in sandy units within the mudstones, are compromised by diagenesis, but porosities of up to 20 per cent and permeabilities of tens and rarely hundreds of millidarcies have been measured. Encouraging shows were observed in many of these intervals, and small quantities of oil and gas have been recovered in drill stem tests. With only a few targets drilled to date, this frontier area requires more exploration before its hydrocarbon potential can be adequately assessed.

scholarly journals Criteria for petroleum potential and forecast of oil and gas prospective zones in the Achimov deposits of the Gydan Peninsula

2021 ◽  
pp. 4-31
Author(s):  
N. I. Shestakova ◽  
S. V. Ershov ◽  
V. N. Bardachevskiy
Keyword(s):  
Oil And Gas ◽  
Wave Pattern ◽  
Seismic Facies ◽  
Seismic Exploration ◽  
Petroleum Potential ◽  
Lower Aptian ◽  
Sandy Material ◽  
Seismic Sections ◽  
Gas Potential ◽  
Sand Bodies

The structure and seismogeological characteristics of the Achimov strata of the Gydan Peninsula are considered. Geological and geophysical criteria for the regional forecast of oil and gas potential, taking into account the clinoform structure of the Berriasian-Lower Aptian deposits, are proposed. Based on the interpretation of drilling data and 2D seismic exploration, predictive maps of the thickness of sand bodies were constructed, depocenters of accumulation of sandy material were mapped. Seismostratigraphic studies, which are based on a comprehensive analysis of the wave pattern of time seismic sections, dynamic and seismic facies analyzes, as well as paleotectonic and paleogeomorphological reconstructions, made it possible to identify the Salmanovskaya and Yuzhno-Gydanskaya oil and gas zones in the Achimov strata of the Gydan Peninsula.

scholarly journals STRUCTURAL CHARACTERISTICS OF VENDIAN-CAMBRIAN SEDIMENTS WITHIN THE NORTHTUNGUSKA OGR USING SEISMIC 2D DATA IN CONNECTION WITH PETROLEUM POTENTIAL

2019 ◽  
pp. 14-29
Author(s):  
I. A. Gubin ◽  
A. V. Taratenko
Keyword(s):  
Oil And Gas ◽  
Structural Characteristics ◽  
Middle Cambrian ◽  
Petroleum Potential ◽  
Acoustic Models ◽  
Drilling Data ◽  
2D Data ◽  
Gas Potential ◽  
Core Description ◽  
Terrigenous Complex

Complex interpretation of seismic and parametric drilling data is performed. The data for interpretation are obtained within the conjunction zone of the Kureyka syncline and the Anabar anteclise. As a result of complex interpretation the structural maps on the bottom of Vendian and the top of the Kuonamka formation are constructed. Map of the Vendian terrigenous complex was constructed. High prospects of oil and gas potential of the lower-middle Cambrian sediments are shown. Based on the analysis of logging data, core description and detailed correlation of time sections, the litho-acoustic models were compiled for two profiles crossing the barrier-reef system, and two-dimensional synthetic time sections were calculated. Obtained results confirm the correctness of the ideas about the internal structure of the Vendian-Cambrian complexes.

scholarly journals Petroleum Potential of the Deep Ordovician- Lower Devonian Oil and Gas Complex in the South-East of the Timan-Pechora Petroleum Province

2021 ◽  
Vol 20 (3) ◽  
pp. 274-283
Author(s):  
E.A. Kuznetsovа ◽  
Keyword(s):  
Lower Devonian ◽  
Oil And Gas ◽  
Source Rocks ◽  
Hydrocarbon Generation ◽  
The South ◽  
Reservoir Properties ◽  
Lower Paleozoic ◽  
Petroleum Potential ◽  
Middle Paleozoic ◽  
Gas Potential

The article is devoted to the assessment of the oil and gas potential of the deep Ordovician-Lower Devonian oil and gas complex in the south-east of the Timan-Pechora oil and gas province. Within the Upper Pechora Basin of the Pre-Ural trough and in the south of the Pechora-Kolva aulacogen, several wells were drilled with a depth of more than 5 km, some of which entered the Lower Paleozoic deposits. These strata are difficult to access and poorly studied, and the prospects for their oil and gas potential are unclear. The article describes the composition of the complex, gives geochemical characteristics, describes reservoir properties, and presents the results of 1D and 2D basin modeling. Models of the zoning of catagenesis are presented. The oil and gas complex includes a variety of oil and gas source rocks. It is possible to allocate collectors, as well as the seals. In the Lower Paleozoic sediments, the processes of oil, gas and gas condensate generation took place, which could ensure the formation of deposits both in the deep strata of the Lower and Middle Paleozoic, and in the overlying horizons. The generation and accumulation of hydrocarbons in deep-buried sediments occurred at a favorable time for the formation of deposits. However, it is considered that the scale of hydrocarbon generation for the Lower Paleozoic deposits is not high.

scholarly journals Petroleum Potential in the Center of Song Hong Basin of the Northern Continental Shelf Vietnam

2021 ◽  
Vol 132 (1) ◽  
pp. 25-29
Author(s):  
N. T. Thinh ◽  
Keyword(s):  
Continental Shelf ◽  
Oil And Gas ◽  
Sedimentary Basin ◽  
Sedimentary Basins ◽  
Geological Structure ◽  
Central Basin ◽  
Petroleum Potential ◽  
History Of ◽  
Gas Potential ◽  
Gas Bearing

The sedimentary basin Song Hong is one of the largest Cenozoic oil and gas bearing sedimentary basins, in which the center of the basin covers a large part. It elongates from block 105 to block 115. This article presents the geological structure, history of geological development, oil and gas potential and characteristics of reservoirs f the central basin, where the thickness of the basin deposits reaches more than 16 000 m.

scholarly journals Modeling of the tectonic position and prediction of the spatial distribution of hydrocarbon deposits in the Middle Kura depression (examples from the Ganja oil and gas-bearing region)

2020 ◽  
pp. 38-44
Author(s):  
A. Khuduzade ◽  
Sh. Akhundov ◽  
S. Shabanova ◽  
T. Imamalili ◽  
O. Ismaylov
Keyword(s):  
Oil And Gas ◽  
Sedimentary Cover ◽  
Sedimentary Basins ◽  
Petroleum Potential ◽  
Tectonic Position ◽  
Geochemical Factors ◽  
History Of ◽  
Fundamental Research ◽  
Gas Potential ◽  
Gas Bearing

The article continues the series of publications devoted to the forecast of oil and gas potential in the Middle Kura Depression. Systematization and analysis of published materials show that the effectiveness of prospecting and exploration for oil and gas depends on the fairness and accuracy of scientific ideas about the origin and patterns of hydrocarbon localization. The established heterogeneity of the structure of sedimentary basins and the uneven distribution of oil and gas deposits in them allows us to make a predictive assessment of territories based on historical-geological methods and a synthes analysis of criteria for assessing the prospects of oil and gas. These methods are based on fundamental research in geology, the most important of which are structural-tectonic analysis and the genesis of oil and gas-bearing structures, the study of geological and geochemical factors in the simulation model “Uniform continuous lowering”, the study of the staged conversion of organic matter in the catagenetic process and show the oil and gas windows, prediction of collector and overlying seal zones, study of organic substances dissolved in water and other hydrogeological factors contributing to the formation and prevent of oil and gas deposits. Analysis of the geological history of the first stage of research,the assessment of petroleum potential of the region. Based on the results of seismic surveys, we carried out paleotectonic reconstructions for the northwestern zone of the Ganja oil and gas-bearing region, which illustrate the maps of total thickness in the form of isopachic triangle, paleotectonic profiles and graphic of subsidence size. Modeling of structural surfaces made it possible to establish the historical development of not only local structures, but also to notice new features in the formation of chronostratigraphic surfaces, and to judge the tectonic regime of the sedimentation basin, to justify the mechanism of formation in the sedimentary cover of the Middle Kura depression, both of plicative dislocation and faulting as well as zones of oil and gas accumulation associated with them. The study can be considered as a positive argument when choosing the location of the prospecting well.

scholarly journals Paleobasins – a new concept of modeling the history of geological development and oil and gas bearing of regions

Georesursy ◽  
2019 ◽  
Vol 21 (2) ◽  
pp. 4-12
Author(s):  
Antonina V. Stoupakova ◽  
Alexander A. Pashali ◽  
Victoria V. Volyanskaya ◽  
Anna A. Suslova ◽  
Anna P. Zavyalova
Keyword(s):  
Oil And Gas ◽  
Local Level ◽  
Regional Scale ◽  
Historical Analysis ◽  
Petroleum Potential ◽  
Subsequent Transformation ◽  
Geological Processes ◽  
History Of ◽  
Gas Potential ◽  
Gas Bearing

“Paleobasin” is an area of long-term and steady subsidence of the Earth’s crust at a certain stage of geological development in the past, during which a body of sedimentary rocks of a mega-regional scale is formed, subsequently subjected to the influence of various kinds of geological processes leading to a reduction in its size, as well as changes in geometry and structure. Paleobasin is not a new concept. However, for petroleum, historical analysis was used only for those sedimentary strata that were not metamorphosed or collapsed into folds. As a result, the side zones of the basins and deep horizons were excluded from the basin modeling. The proposed approach to the analysis of paleobasins, regardless of the degree of their subsequent transformation, makes it possible to assess the petroleum potential of past eras, both primary and residual, especially in those zones and horizons that were previously derived from a general consideration of the prospects for finding oil and gas. The article shows the need for an integrated historical approach to the analysis of the oil and gas potential of the territory, both at the basin level and at the local level, including sedimentary strata and strata, which are often referred to as the “acoustic foundation”. Unfortunately, very often when modeling a promising object and assessing its resources or reserves, some of these attributes are taken for the type of work already done and do not adapt to a single model of oil and gas deposits, which reduces the reliability of the final result.

scholarly journals New Thoughts on the Prospects of Petroleum Potential in the Eger Rift (Czech Republic)

2017 ◽  
Vol 62 (1) ◽  
pp. 203-214
Author(s):  
Marina Sidorová ◽  
Pavel Cizek ◽  
Yuri Galant ◽  
Ján Pinka
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Czech Republic ◽  
Aromatic Hydrocarbons ◽  
Oil And Gas ◽  
Petroleum Potential ◽  
Eger Rift ◽  
Polycyclic Aromatic ◽  
Deep Sources ◽  
Gas Potential

Abstract The present paper highlights the problem related to the source of hydrocarbons in the Eger Rift in Czech Republic. The authors discuss the existence of polygenetic deep sources of hydrocarbons. The investigations are based on direct indicators of Polycyclic Aromatic Hydrocarbons (abbr. PAHs). Among the diverse components of PAHs has been recognized typomorphic oil association – videlicet: phenanthrene, chrysene, pyrene and benzo(a)pyrene. On the basis of new geochemical, geological and mathematical data the oil and gas potential of Eger Rift is also discussed.

scholarly journals Comparative petrophysical characteristics of the Jurassic sections of the Tomsk Region fields (in relation to petroleum potential of pre-Jurassic sequences)

2020 ◽  
Vol 15 (4) ◽  
Author(s):  
A.O. Aleeva ◽  
◽  
G.A. Lobova ◽  
E.N. Osipova ◽  
◽  
...  
Keyword(s):  
Electrical Resistivity ◽  
Comparative Analysis ◽  
Natural Radioactivity ◽  
Oil And Gas ◽  
Fluid Migration ◽  
Petroleum Potential ◽  
Deep Wells ◽  
Tomsk Region ◽  
Jurassic Rocks ◽  
Gas Potential

In case of upward, so in case of downward fluid migration, processes of superposed epigenesis perform and lead to secondary epigenetic transformations of rocks of passage Jurassic strata, which result in their anomalous geophysical and petrophysical characteristics. A generalizing comparative analysis of the geophysical and petrophysical characteristics of the Jurassic section of different field types in Tomsk Region was carried out: without petroleum potential in pre-Jurassic sequences, with commercial inflows from the pre-Jurassic structures. Results of exploration electrical resistivity and carbonatization in the Jurassic section of deep wells and also spontaneous potential variation, electrical resistivity and natural radioactivity in Bazhenov Formation confirm anomalousness of geophysical and petrophysical parameters of Jurassic rocks in case of pre-Jurassic sequences. This paper determines 6 geophysical and petrophysical characteristics of the Jurassic strata as predictive indicators for oil and gas potential estimation in pre-Jurassic section.

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