scholarly journals CONDITIONS FOR THE FORMATION OF CLINOFORMS IN THE MIDDLE AND SOUTH CASPIAN MEGABASIN

2021 ◽  
Vol 2 (446) ◽  
pp. 82-89
Author(s):  
P. Z. Mammadov ◽  
R. Y. Ganiyevа
Keyword(s):  
Oil And Gas ◽  
Sedimentary Basin ◽  
Sedimentary Cover ◽  
Mobile Belt ◽  
South Caspian Basin ◽  
Stratigraphic Analysis ◽  
Central Segment ◽  
Specific Shape ◽  
New Perspective

The paper considers sedimentation process and objects of lateral development in deep-water uncompensated and shallow-water – epicontinental paleobasins developed at various evolution stages of South- Caspian and Middle-Caspian basins. The South Caspian megabasin is a great tectonic crustal element and a highly prospective sedimentary basin in the central segment of the Alpine-Himalayan mobile belt. The role of boundary structures of Scythian-Turan platform in the Middle Caspian (such as South-Caspian land and Karaboghaz arc) and avalanche sedimentation on the continental shelf in development of sedimentation units and specific shape objects of lateral development in many kilometers long sedimentary cover of South-Caspian basin has been shown. According to interpretation of seismo-stratigraphic data the inflow of paleodeltaic, avandelatic and turbidite objects of lateral development for infill of the Early Pliocene basin has been proved. Seismo-stratigraphic analysis, using other analyses (e.g. study of morphostructure of palaeorelief and thicknesses of the units and formations) and GSW, enabled the genesis of deposits in the underlying PS formations to be clarified from a new perspective and the favou- rable zones of formation of large lithological and stratigraphic traps for oil and gas accumulations to be identified.

scholarly journals The structure of the sedimentary complex of the Middle and South Caspian depressions (Azerbaijan sector)

2021 ◽  
Vol 43 (4) ◽  
pp. 199-216
Author(s):  
N.P. Yusubov ◽  
I.S. Guliyev
Keyword(s):  
Seismic Data ◽  
Oil And Gas ◽  
Sedimentary Cover ◽  
Clay Content ◽  
Geological Structure ◽  
Point Of View ◽  
South Caspian Basin ◽  
Origin And Evolution ◽  
Geological Interpretation ◽  
High Degree

The high degree of knowledge of the upper horizons of the sedimentary cover of the Middle and South Caspian depressions, given an insufficient increase in hydrocarbon reserves, leads to the need for a detailed approach to the search for oil and gas deposits in deep-seated sediments (over 6 km). During the geological interpretation of new highly informative seismic data, as well as data of deep drilling and petrological core studies, there were revealed obvious shortcomings in the concepts of the origin and evolution of the Middle and South Caspian depressions. These ideas misinterpret evolution, especially the South Caspian Basin, which is characterized by a number of unique features: very thick sedimentary cover (up to 22 km), extremely high sedimentation rate, low heat flow and reservoir temperatures, abnormally high pore and reservoir pressures, high clay content of the section, etc. The main purpose of the study was to elucidate the regional structure and features of the dissection of the sedimentary cover of the Middle and South Caspian depressions, the conditions of occurrence and distribution of facies and thicknesses of individual complexes of deposits. The paper analyzes the results of some previous studies of the geological structure of the Middle and South Caspian depressions based on the data of deep seismic sounding, seismological and gravimetric observations. We consider the main conclusions of these studies, about the geological structure of the sedimentary complex of the region’s, very outdated and subject to revision. The results of seismic stratigraphic analysis of seismic data allowed the authors to identify new data about the tectonic structure and express a completely different point of view regarding the structure of the sedimentary cover in the region. The work also touches on the issue associated with the tectonics of the region and the alleged subduction zone here.

Geothermal features of the western part of Yenisei-Khatanga regional trough

2019 ◽  
pp. 28-36
Author(s):  
Dmitry A. Novikov
Keyword(s):  
Oil And Gas ◽  
Sedimentary Basin ◽  
Sedimentary Cover ◽  
Heating Effect ◽  
Small Thickness ◽  
Geological Evolution ◽  
Geological Section ◽  
Gas Bearing ◽  
Different Parts ◽  
Comprehensive Study

The article deals with the results of a comprehensive study of the geothermal conditions of oil and gas bearing deposits in the western part of Yenisei-Khatanga regional trough. Four types of vertical geothermal zonality are established, the characteristics of which depend on the geological evolution of different parts of the sedimentary basin. The minimal geothermal gradients (1,80–2,2 0 C/100 m) are established there in the near edge zones with a small thickness of the sedimentary cover and the development of the infiltration system. The maximum gradients (3,2–3,4 0 С/100 m) are established in the zones of disjunctive tectonics, which had a significant heating effect on the geological section due to the ascending discharge of groundwater from deep-lying aquifers.

scholarly journals SEISMOSTRATIGRAPHIC MODEL OF THE ALADAN-MAYA SEDIMENTARY BASIN, SOUTHEASTERN SIBERIAN PLATFORM

2020 ◽  
Vol 39 (6) ◽  
pp. 25-47
Author(s):  
E.P. Razvozzhaeva ◽  
Keyword(s):  
Siberian Platform ◽  
Oil And Gas ◽  
Sedimentary Basin ◽  
Sedimentary Cover ◽  
Parent Material ◽  
Geologic Map ◽  
Seismic Sections ◽  
Basin Boundaries

Generations of the materials of the seismic exploratory works conducted in the Aldan-Maya sedimentary basin substantiated the seismostratigraphic model and construction of the lateral and longitudinal sections allowed an understanding of the specific features of the sedimentary cover structure and specifying the basin boundaries. Based on the seismic sections and geologic map at a scale of 1: 2 500 000 a scheme of structures formed in the Riphean was developed. These constructions made it possible the purposeful plan of the oil-and-gas searching and exploratory works, estimation of thickness and area of the parent material. The investigations made can be applied for clarification of the structure of the eastern Siberian Platform.

scholarly journals PROGNOSIS OF BAKU ARCHIPELAGO HYDROCARBON POTENTIAL BY TYPES OF MUD VOLCANOES

2019 ◽  
pp. 55-61
Author(s):  
N. Narimanov ◽  
G. Gahramanov ◽  
M. Babayev ◽  
S. Shpyrko ◽  
G. Nasibova ◽  
...  
Keyword(s):  
Oil And Gas ◽  
Sedimentary Cover ◽  
Clear Correlation ◽  
Hydrocarbon Potential ◽  
Caspian Basin ◽  
Mud Volcanoes ◽  
South Caspian Basin ◽  
Gas Generation ◽  
Deep Faults ◽  
Deep Water Part

Mud volcanoes are indicators of the oil and gas generation processes in the hydrocarbon basins and can show the hydrocarbon potential of local anticline structures where they arise. The quantitative study of the composition of gas ejecta from volcanoes and their age can reveal the generation zones in the sedimentary cover and help assess the hydrocarbon bearing potential of an area. Mud volcanoes are often spatially related to the disjunctive faults intersections, and, on the other hand, there is a clear correlation between the location of the major oil and gas deposits and deep faults. Therefore, ejecta of mud volcanoes present a tool for geochemical probing of potentially hydrocarbon bearing structures. We used a spatial analysis of the composition of gases in mud volcanoes in order to reveal the prospective hydrocarbon targets in Baku Archipelago, located in the western part of the South Caspian Basin. The results confirm the prognosis for the existence of major gas condensate and gas accumulations in its deep water part. The calculations for the ages of mud volcanoes show that they refer to Cretaceous and Miocene-Pliocene periods.

scholarly journals The interdependence of hydrochemical and hydrodynamic processes in evaporite oil and gas basins

2021 ◽  
pp. 21-29
Author(s):  
R.R. Gumerova
Keyword(s):  
Oil And Gas ◽  
Sedimentary Cover ◽  
Potential Gradient ◽  
Heavy Clay ◽  
Hydrodynamic Processes ◽  
Hydrodynamic Potential ◽  
Closed Water ◽  
Drive Systems ◽  
Transformation Of Organic Matter

The article examines the reasons for the formation of vertical hydrochemical inversion within particular oil and gas basins and points out the role of waters of different genesis in the development of this phenomenon. The following processes of reverse hydrochemical zoning in the sedimentary cover are analyzed: thickening of heavy clay strata and the related squeezing of loosely bound waters, dehydration of clay minerals and catagenic fluid generation accompanying the transformation of organic matter into hydrocarbons of the petroleum series. The hydrochemical inversion at great depths is noted to occur and persist in the environment of the passive hydrodynamic regime; in closed water-drive systems, the demineralization of waters with depth causes the decrease in the hydrodynamic potential gradient, determining the migration pattern not only of water but also of hydrocarbons and, consequently, the location of oil and gas accumulation zones.

scholarly journals Geological structure of the northern part of the Kara Shelf near the Severnaya Zemlya archipelago according to recent studies

2020 ◽  
Vol 245 ◽  
pp. 505-512
Author(s):  
Evgeny Gusev ◽  
Alexey Krylov ◽  
Dmitry Urvantsev ◽  
Yury Goremykin ◽  
Petr Krynitsky
Keyword(s):  
Oil And Gas ◽  
Sedimentary Basin ◽  
Sedimentary Cover ◽  
Geological Structure ◽  
The Arctic ◽  
The West ◽  
The North ◽  
Thin Carbon ◽  
Severnaya Zemlya ◽  
Gas Potential

Until recently, the North of the Kara Shelf was completely unexplored by seismic methods. Seismic and seismo-acoustic data that have appeared in recent years have made it possible to decipher features of the regional geological structure. This study solves the urgent problem of determining the prospects for the oil and gas potential of the North Kara sedimentary basin. The relevance of the research is associated with determining the prospects of the oil and gas potential of the North Kara sedimentary basin. The aim of the study is to clarify the age of the reflecting horizons using data on the geology of the island, as well as to determine the tectonic position of the sedimentary cover and basement structures in the north of the Kara shelf. The sedimentary cover is divided into three structural levels: Cambrian-Devonian, Middle Carboniferous-Cretaceous, Miocene-Quarter. The Cambrian-Devonian complex fills the deep troughs of the North Kara shelf. The most noticeable discontinuity is the base of Carboniferous-Permian rocks, lying on the eroded surface of folded Silurian-Devonian seismic complexes. The blanket-like plate part of the cover is composed of thin Carbon-Quarter complexes. The authors came to the conclusion that the fold structures of the Taimyr-Severozemelskiy fold belt gradually degenerate towards the Kara sedimentary basin and towards the continental slope of the Eurasian basin of the Arctic Ocean. A chain of narrow uplifts within the seabed relief, which correspond to narrow anticlines is traced to the West of the Severnaya Zemlya islands. Paleozoic rocks have subhorizontal bedding further to the West, within the Kara shelf. Mesozoic folding in the North of the Kara Sea is expressed exclusively in a weak activation of movements along faults. At the neotectonic stage, the shelf near Severnaya Zemlya was raised and the Mesozoic complexes were eroded. The modern seismic activity of the North Zemlya shelf is associated with the ongoing formation of the continental margin.

Is a snake scarier than a gun? The ontogenetic–phylogenetic dispute from a new perspective: The role of arousal.

Emotion ◽  
2019 ◽  
Vol 19 (4) ◽  
pp. 726-732 ◽  
Author(s):  
Andras Norbert Zsido ◽  
Anita Deak ◽  
Laszlo Bernath
Keyword(s):  
New Perspective

Beckett's Broken Circle: A Literary Fractal

2020 ◽  
Vol 29 (2) ◽  
pp. 196-215
Author(s):  
Luke Connolly
Keyword(s):  
Dynamic Chaos ◽  
Geometric Form ◽  
Self Similarity ◽  
Collision Point ◽  
Stable Order ◽  
Structural Principle ◽  
Recent Interest ◽  
Viable Solution ◽  
Specific Shape

This essay proposes that the picture of a broken circle encountered by Watt during the second part of his tale marks a crucial collision point between Beckett's literary and mathematical interests and triggers a process of fractal scaling self-similarity. Building on recent interest concerning the role of the mathematics and mathematical forms found in Beckett's work, I argue that the broken circle depicted in the picture from Watt is a geometric form which (re)appears within at least three interlocking scales throughout Beckett's novel-length prose: (i) its moment of arrival in the picture from Watt, (ii) a macroscopic reinscription in the names of the protagonists populating the five novels spanning Watt through to The Unnamable and (iii) buried within the narratological depths of How It Is. As a structural principle, the interminable irregularity of fractals offered Beckett a viable solution for what he considered the defining task of the modern artist: ‘to find a form to accommodate the mess’. Moreover, the specific shape selected for his fractal is shown to contain within its geometry one of Beckett's most universal and pressing concerns: the inevitable insufficiency of language. Therefore, although this essay restricts itself to examining Beckett's novel-length prose, the idea of a broken circle fractal promises to provide a valuable heuristic through which to reassess the author's other generic avenues. Fractals thus offer a means through which one can bind together the length and breadth of Beckett's oeuvre without ever reducing dynamic chaos to stable order.

Significance of Mineralogical and Lithologic-Petrographical Rank in the Ranking of Geological Information

2020 ◽  
Vol 42 (4) ◽  
pp. 33-49
Author(s):  
O.V. CHEPIZHKO ◽  
V.V. YANKO ◽  
V.M. KADURIN ◽  
I.M. NAUMKO ◽  
S.M. SHATALIN
Keyword(s):  
Fluid Flow ◽  
Black Sea ◽  
Bottom Sediments ◽  
Oil And Gas ◽  
Sedimentary Cover ◽  
Geochemical Characteristics ◽  
The Black Sea ◽  
Flow Parameters ◽  
Geochemical Parameters ◽  
Geological Information

For the first time the importance of mineralogical and lithological-petrographical ranks in the line of geological information ranks is substantiated for implementation of long-term forecasts, standard and non-standard approaches to research of physical and geochemical parameters as a basis of creation of complex system of forecast criteria and prospecting indicators of hydrocarbons within the sedimentary cover of Black sea based on the theory of global fluid-flows derivation. These criteria have different sensitivity to the object (hydrocarbon deposits) and are therefore ranked. The ranking determined the following parameters: 1) seismic data within the object, obtained by the method of deep seismic sounding, RWM SDP; 2) parameters of tectono-geodynamic structures; 3) the main characteristics of sedimentary cover and bedrock; 4) geochemical characteristics; 5) parameters of mineral complexes and fluid inclusions in mineral neoformations; 6) the value of the distribution of meiobenthos. Based on modern views of oil and gas geology, structural-tectonic and lithological-facies criteria are among the main ones. The study of the mineralogical component of sediments is made with using mineralogical, thermobarogeochemical and X-ray spectral methods. Fixation of anomalies of fluid flow at the bottom of the Black Sea as to the distribution of abiotic parameters in order to assess the prospects of oil and gas is determined by structural and tectonic features and high permeability of fluid flow; parameters of mineral complexes (minerals, facies) and genetic connections; heterogeneity of geochemical characteristics of bottom sediments; the presence of hydrocarbon inclusions in authigenic minerals of bottom sediments.

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