scholarly journals Current problems in the North Caspian depression geology and oil and gas prospects

2021 ◽  
Vol 21 (4) ◽  
pp. 281-290
Author(s):  
Yakov A. Rikhter ◽  
Keyword(s):  
Fluid Dynamics ◽  
Oil And Gas ◽  
Deep Structure ◽  
Carbonate Platforms ◽  
Deep Well ◽  
The North ◽  
Current State ◽  
Consolidated Crust ◽  
Caspian Depression ◽  
Dynamics Problems

The deep structure and formation of the North Caspian (Precaspian) depression have not been fully understood due to the scarcity of depth studies at 18–22 km. The existing concepts and hypotheses are clearly insufficient to interpret the unexplained facts. New approaches and research efforts are necessary to solve the old problems. The current state of the depression deep structure problems is reviewed, and the existing explanation flaws are demonstrated. The depression consolidated crust has oceanic and riftogenic origin as it has been suggested by the author before. This explanation is supported by the Astrakhan deposit D-2 deep well core data. The Astrakhan-Aktobe zone arched uplift genesis, formation and role in the carbonate platforms emergence are discussed. Deep geothermy and fluid dynamics problems, as well as recent geophysical data are considered in view of the North Caspian depression hydrocarbon prospects.

Oil-Bearing Capacity of the Great Depths of the East of the Caspian Depression and the Conditions for the Formation of Oil and Gas Accumulations

2019 ◽  
Vol 16 (11) ◽  
pp. 4491-4501
Author(s):  
O. S. Obryadchikov ◽  
K. M. Taskinbaev
Keyword(s):  
Oil And Gas ◽  
Deep Structure ◽  
Lower Permian ◽  
Vertical Flow ◽  
Carbonate Sediments ◽  
Geological Exploration ◽  
Eastern Area ◽  
Caspian Depression ◽  
Oil Deposits ◽  
Carbonate Complexes

The features of the deep structure of the eastern part of the Caspian depression, the patterns of placement of large carbonate complexes, which are associated with the main accumulations of oil and gas, are considered. The discovery of industrial accumulation of oil in the Lower Permian terrigenous sediments on the Akzhar Eastern area showed the possibility of carbonaceous carbonate deposits of carbon to be the object of prospecting and exploration. Oil deposits in the supersalt complex of sediments on the structures of Karatube South and Saigak are assumed to be formed due to the vertical flow from subsalt clay-carbonate sediments, which also allows us to count on the expansion of prospecting works and to focus on the east of the Caspian depression a new direction geological exploration (DGE).

scholarly journals The oil and gas potential of the north of the Siberian platform and adjacent shelf

2021 ◽  
Vol 1201 (1) ◽  
pp. 012076
Author(s):  
A N Dmitrievskiy ◽  
N A Eremin ◽  
N A Shabalin ◽  
I K Basnieva ◽  
A T Kondratyuk
Keyword(s):  
Siberian Platform ◽  
Seismic Data ◽  
Oil And Gas ◽  
Deep Structure ◽  
The Arctic ◽  
The North ◽  
Common Depth Point ◽  
Oil And Gas Resources ◽  
The Common ◽  
Gas Potential

Abstract The objective of this article is an estimation of the oil and gas potential of the north of the Siberian platform and adjacent shelf. The Siberian platform is characterized by a large concentration of oil and gas resources in the southern and central parts of the platform. The main oil and gas province of the Siberian Platform is the Leno-Tungus oil and gas province. The oil- bearing strata in the Lena-Tungus oil and gas province are confined to the Riphean, Vendian, Lower-Middle Cambrian deposits, in which large oil and gas fields are discovered. In modern contours the Siberian platform in the north and north-west is fringed by the Yenisei-Khatanga regional trough. In the east, the Yenisei-Khatanga regional trough is connected with the Anabar- Lena trough, framing the north-eastern part of the Siberian platform. Analysis of the available geological and geophysical materials shows a fairly high potential of the Anabar-Lena and Yenisei-Khatanga troughs for the discovery of large hydrocarbon fields. The basic understanding of the geologic-tectonic structure and petroleum potential of the northern part of the Siberian Platform and the adjacent shelf of the Arctic zone are currently based on seismic data by the method of the common depth point (CDP), tied to the existing deep search and parametric wells. Representations of the deep structure and oil and gas potential of specific areas, the allocation of targeted promising oil and gas horizons can change dramatically as the depth of seismic acquisition of the method of the common depth point increases and the software for processing and interpreting seismic data is improved. The localized oil and gas resources of the north of the Siberian platform and adjacent shelf are 41017,3, subsequently, 27582,3 - onshore and offshore - 13435 MMT (million tons) of oil equivalent.

Tectonic Criteria of Oil and GAS Potential at the Transitional Part of the Susha-sea Along the Western Coast of the South Caspian Depression

2021 ◽  
Author(s):  
Baylar Aslanov ◽  
Nurlan Jabizade ◽  
Arastun Khuduzadeh ◽  
Fidan Aslanzade
Keyword(s):  
Oil And Gas ◽  
Central Place ◽  
Western Coast ◽  
The South ◽  
The West ◽  
The North ◽  
Oil And Gas Fields ◽  
Caspian Depression ◽  
Offshore Oil And Gas ◽  
Gas Fields

Abstract The southern part of the South Caspian oil and gas Basin (SCB) is one of the main oil and gas producing regions in the central part of Eurasian continent. The large number of offshore oil and gas fields is located here, therefore the basin considered as a promising direction for the further perspective zones survey. The basin is located between the uneven-aged mountain structures of the Lesser and Greater Caucasus in the west, the Great Balkhan and Kopet-Dag in the east, the Talish and Elbrus ridges in the south. In the north, it is limited by a sub-latitudinal regional deep fault, which fixes the northern slope of the complex Absheron-Balkhan zone of uplifts, which is part of the South Kura and Western Turkmenistan depressions. Among the structural elements of the second order, the South Absheron depression, the complex Abikh swell and the Javadkhan-Natevan zone in the west should be noted; Turkmen terrace, Ogurchinskaya step and Chikishlyar-Fersmanovskaya-Weber-Western zone in the east (Fig. 1). The central place in the structure of the basin is occupied by the South Caspian Mega Depression (SCMD), in the most submerged part of which - the pre Elbrus Basin - the basement lies at a depth of about 25 km, and the sedimentary stratum, including Mesozoic, Cenozoic and Quaternary formations, is largely represented by the Pliocene - post-Pliocene sediments, reaching a total thickness of 8–10 km and more in the troughs (Fig. 2, 3).

Evaluation of oil-gas bearing potential associated with fold formation properties of Lower Kur depression and Baku archipelago

2020 ◽  
pp. 13-20
Author(s):  
G.J. Nasibova ◽  
◽  
N.R. Narimanov ◽  
M.S. Babaev ◽  
◽  
...  
Keyword(s):  
Oil And Gas ◽  
The South ◽  
Gas Generation ◽  
North West ◽  
The North ◽  
Compressive Stresses ◽  
Oil Generation ◽  
Caspian Depression ◽  
Fold Formation ◽  
Earth Temperature

The article explores the oil and gas generation properties and hydrocarbon content of Lower Kur depression and Baku archipelago based on the studies of morphology, space position of local uplifts, types of faults, evolution of mud volcanoes, distribution properties of compressive stresses and earth temperature environment. It was defined that as a result of action of longitudinal and lateral folding mechanisms predominantly brachy-form structures had been formed, the anticline zones and trends of which show that their space position is controlled by compressive stresses arising within the narrow north-western part of the Iranian-Afghani plate. The folding process in Oligocene-Pliocene series of the South-Caspian depression basically takes place due to the dynamics of active Maikop clays. Local uplifts of reviewed area are originated no later than the end of the Miocene. Carried out analysis justifies that the intensity of folding processes within Lower Kur depression and Baku archipelago rises both in time and from the south-east towards the north-west. A diagram of vertical oil generation zoning for Lower Kur depression and Baku archipelago has been developed based on the earth temperature data, according to which it was established that the Upper Cretaceous, Paleogene-Miocene sediments and the Productive Series represent strata generating commercial oil and gas.

scholarly journals ASSESSMENT OF THE MINERAL RESOURCE POTENTIAL OF OIL AND GAS AREAS OF THE TOMSK REGION

2020 ◽  
Author(s):  
E.M. Serezhechkin ◽  
Keyword(s):  
Mineral Resource ◽  
Oil And Gas ◽  
Resource Base ◽  
Resource Potential ◽  
The North ◽  
Current State ◽  
Tomsk Region

The paper considers the transformation of the mineral resource potential of oil and gas producing regions of the Tomsk region in 1990–2019. The current state of the mineral resource base in the North of the Tomsk region is estimated.

scholarly journals STRUCTURE OF THE EARTH’S CRUST ACCORDING TO GEOPHYSICAL DATA ALONG CHEGEM PROFILE  (NORTH CAUCASUS)

2017 ◽  
Author(s):  
А.Г. Шемпелев ◽  
С.У. Кухмазов ◽  
М.А. Компаниец ◽  
К.С. Харебов ◽  
Х.О. Чотчаев ◽  
...  
Keyword(s):  
Oil And Gas ◽  
Sedimentary Cover ◽  
Hydrocarbon Exploration ◽  
North Caucasus ◽  
The North ◽  
Consolidated Crust ◽  
Scythian Plate ◽  
Hydrocarbon Deposits ◽  
First Time ◽  
Platform Cover

Несколькими организациями в последние десятилетия были выполнены региональные геофизические исследования различными методами в пределах Северного Кавказа. Вдоль Чегемского профиля (перевал Китлод – г. Буденновск) впервые к северу от зоны сочленения структур Большого Кавказа со Скифской плитой получены две чёткие субгоризонтальные сейсмические границы, разделяющие, вероятно, платформенный чехол, переходный комплекс и консолидированный фундамент. Платформенный чехол, представленный палеозойскими отложениями большой мощности, по аналогии со многими территориями мира, где уже обнаружены и разведаны уникальные месторождения нефти, включая шесть залежей углеводородов, в числе которых и газоконденсатное Кармалиновское месторождение в зоне Передового хребта, может оказаться перспективным на нефтегазовые структуры. Результаты глубинных геофизических работ последних лет могут скорректировать направление поисков углеводородов в регионе. Известные в этом районе Предкавказья восточнее Чегемского профиля нефтегазоносные структуры осадочного чехла приурочены к выделяемым по геофизике поднятиям в консолидированной коре или к их краевым частям. Это даёт основание ожидать наличие углеводородов, вероятно, в материнских палеозойских образованиях Чернолесской впадины, а также соответственно новые перспективные участки и в осадочном чехле по её обрамлению. Several organizations in recent decades have carried out regional geophysical studies by various methods within the North Caucasus. Along the Chegem profile (the Kitlod Pass – town of Budennovsk), for the first time to the north of the junction zone of the Greater Caucasus structures with the Scythian plate, two distinct subhorizontal seismic boundaries, probably sharing a platform cover, a transitional complex and a consolidated foundation have been obtained. The platform cover, represented by large Paleozoic deposits, by analogy with many areas of the world where unique oil deposits, including six hydrocarbon deposits, and the gas condensate Karmalinovskoye deposit in the zone of the Forward Ridge, have already been discovered and explored, may prove promising for oil and gas structures. The results of deep geophysical studies of recent years can correct the direction of hydrocarbon exploration in the region. The oil-and-gas-bearing structures of the sedimentary cover, known in this region of the Ciscaucasia to the east of the Chegem profile, are confined to uplifts in geophysics in the consolidated crust or to their marginal parts. This gives grounds to expect the presence of hydrocarbons, probably in the parent Paleozoic formations of the Chernoslavskaya depression, and also, respectively, new promising sites in the sedimentary cover along its framing.

scholarly journals TYPE DESIGNS OF THE PALEOZOIC COMPLEX SECTIONS OF THE EAST EDGE OF THE PERI-CASPIAN DEPRESSION

Neft i gaz ◽  
2020 ◽  
Vol 1 (121) ◽  
pp. 6-24
Author(s):  
Kh.B. ABILKHASIMOV ◽  
Keyword(s):  
Oil And Gas ◽  
Geological Structure ◽  
Lower Permian ◽  
Carbonate Platforms ◽  
Petroleum Potential ◽  
Sea Level Fluctuations ◽  
Thrust Tectonics ◽  
Caspian Depression ◽  
Facies Succession ◽  
Eastern Edge

The present article highlights the features of the geological structure, sedimentation conditions and the influence tectonic evolution factors on the petroleum potential within the eastern edge of the Precaspian basin. According to the features of the geological structure and lithological characteristics of the sedimentary formations of the eastern edge of the Precaspian basin, different facies zones can be distinguished, corresponding to the distinguished structural-formational zones with several types of Paleozoic sections. НЕФТЬ И ГАЗ 2021 1 (121) 7 ГЕОЛОГИЯ Based on the comparison of the Paleozoic sections for the eastern edge of the Precaspian basin it is concluded that collision tectonics was the major factor for sedimentation. Vertical facies succession influenced by tectonics and sea level fluctuations. Carbonate platforms played an important role in the distribution of sedimentary material and controlled the depth of the sea, which influenced on the composition and texture of the rocks. The presence of carbonate platforms was also reflected in the reduced thickness of the Lower Permian sediments, which are less presented within the carbonate platforms stratigraphic section comparing to the adjacent relatively deep-water areas located to the west outside the carbonate platforms. The structure of carbonate platforms was to the largest extent defined by the thrust tectonics and that controlled the distribution of oil and gas fields and potential traps.

Geothermal condition and outlook for oil and gas deposits in the north-west Black Sea shelf

2002 ◽  
Vol 8 (2-3) ◽  
pp. 206-208
Author(s):  
V.G. Osadchyi ◽  
◽  
O.A. Prykhod'ko ◽  
I.I. Hrytsyk ◽  
◽  
...  
Keyword(s):  
Black Sea ◽  
Oil And Gas ◽  
North West ◽  
The North ◽  
West Black Sea

CURRENT STATE AND DEVELOPMENT PERSPECTIVES OF THE CASPIAN SPRAT FISHERIES

2018 ◽  
pp. 69-75
Author(s):  
Tatiana Vasilievna Pomogaeva ◽  
Aliya Ahmetovna Aseinova ◽  
Yuriy Aleksandrovich Paritskiy ◽  
Vjacheslav Petrovich Razinkov
Keyword(s):  
Food Item ◽  
Growth Potential ◽  
North West ◽  
Marine Fishery ◽  
The North ◽  
Current State ◽  
West Part ◽  
Eggs And Larvae ◽  
Intensive Growth

The article presents annual statistical data of the Caspian Research Institute of Fishery. There has been kept track of the long term dynamics of the stocks of three species of Caspian sprat (anchovy, big-eyed kilka, sprat) and investigated a process of substituting a food item of sprats Eurytemora grimmi to a small-celled copepod species Acartia tonsa Dana. According to the research results, there has been determined growth potential of stocks of each species. Ctenophoran-Mnemiopsis has an adverse effect on sprat population by eating fish eggs and larvae. Ctenophoram - Mnemiopsis is a nutritional competitor to the full-grown fishes. The article gives recommendations on reclamation of stocks of the most perspective species - common sprat, whose biological characteristics helped not to suffer during Ctenophoram outburst and to increase its population during change of the main food item. Hydroacoustic survey data prove the intensive growth of common sprat biomass in the north-west part of the Middle Caspian. According to the results of the research it may be concluded that to realize the volumes of recommended sprat catch it is necessary to organize the marine fishery of common sprat at the Russian Middle Caspian shelf.

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