scholarly journals Role of elision water exchange in formation of the Yamalo-Kara depression hydrodynamic field

2019 ◽  
pp. 248-261
Author(s):  
D. A. Novikov
Keyword(s):  
Water Exchange ◽  
Oil And Gas ◽  
Water Pressure ◽  
Hydrodynamic Characteristics ◽  
Gas Generation ◽  
Pressure System ◽  
Stage Of Development ◽  
Capacitive Properties ◽  
Unique Material

The unique material has been compiled on the hydrodynamics of oil and gas deposits of the Yamalo-Kara Depression for the first time in the last 30 years. The main feature of the region is the wide development of abnormally high formation pressures (Ka to 2.21) in both Jurassic and Lower Cretaceous horizons. Studying the filtration-capacitive properties and hydrodynamic characteristics of the Jurassic-Cretaceous reservoirs allows to established the predominate role of the elision water exchange in the formation of the modern hydrodynamic structure. At the depth of about 2–2.5 km elisional lithostatic system begins to acquire the features of elisional thermo-dehydration system. The extensive zones of piezomaxima (Bolshekhetskaya and Karskaya megasyneclise) at the present stage of development of the water-pressure basin system became internal areas of water pressure (supply) with a maximum degree of hydrogeological closeness. The vast zones of piezomaxima (the Bolshekhetskaya and Karskaya megasyneclises) became the inner regions of water pressuring (feeding) with the maximal degree of hydrogeological closeness of the interior at the current stage of the development of the water-pressure system in the basin. The areas of piezominima extending along the main sites of oil and gas generation are related to the largest zones of oil and gas accumulation (Vankoro-Suzunskaya, Bovanenkovskaya, Urengoyskaya and others). Currently, two types of natural water-pressure systems has been established in the region under investigation: elision in the inner regions (dominating within the Yamalo-Kara depression) and infiltration — in the basin margins of the West Siberian sedimentary basin.

scholarly journals GROUNDWATER OF THE MESOZOIC HYDROGEOLOGICAL BASIN IN THE TERRITORY OF THE ETY-PUROVSKY OIL AND GAS FIELD

2018 ◽  
pp. 6-11
Author(s):  
V. A. Beshentsev ◽  
R. N. Abdrashitova ◽  
N. K. Lazutin ◽  
I. G. Sabanina ◽  
A. A. Gudkova
Keyword(s):  
Oil And Gas ◽  
Water Pressure ◽  
Gas Field ◽  
Pressure System ◽  
Hydrogeological Conditions ◽  
Oil And Gas Field ◽  
Vertical Zoning

The article considers hydrogeological conditions of the Ety-Purovsky oil and gas field. The authors describe hydrogeological stratification of the field and its hydrogeochemical conditions. These conditions reveal the existence of classical vertical zoning. The research pays attention to the important role of an elution water pressure system in the formation of the hydrogeochemical and hydrogeodynamic fields structure.

scholarly journals HYDROGEOLOGICAL CONDITIONS OF THE ZAPOLYARNOYE OIL AND GAS CONDENSATE FIELD

2017 ◽  
pp. 6-10
Author(s):  
V. A. Beshentsev ◽  
R. N. Abdrashitova ◽  
N. K. Lazutin
Keyword(s):  
Oil And Gas ◽  
Water Pressure ◽  
Gas Condensate ◽  
Pressure System ◽  
Hydrogeological Conditions

Hydrogeochemical conditions of the Zapolyarnoye oil and gas condensate field are discussed in the paper. These conditions of Mesozoic basin are important in the formation and preservation of oil and gas deposits. An explanation is given for the presence of the hydrocarbonate-sodium type of waters in the Neocomian hydrogeo-logical complex. It is shown, that the field belong to the Elysion geodynamic a water pressure system - Omsk-Gydansk structural zone, in particular to the northern part - the Yamal-Gydan lineaments.

scholarly journals The hydrodynamic conditions of the Volyn-Podillya oil and gas-bearing region

2018 ◽  
Keyword(s):  
Oil And Gas ◽  
Water Pressure ◽  
The State ◽  
Upper Devonian ◽  
State Enterprise ◽  
Hydrodynamic Characteristics ◽  
Gas Field ◽  
Hydrodynamic Field ◽  
The Impact ◽  
Gas Bearing

The purpose of the paper was to study hydrodynamic peculiarities of the aquifers of Volyn-Podillya oil and gas-bearing region and their impact on the formation and conservation of gas deposits. The research area is located in the western Ukraine and covers the structures of the Eastern European and the Western European platforms. At present, Lokachi and Velyki Mosty gas fields are discovered here in the deposits of the Middle and Upper Devonian. Non-commercial volumes of gas and oil were received in some exploration wells. Research methodology was based on the evaluation of water initial formation pressures and static levels that were obtained from the funds of the State Enterprise "Lvivgazvydobuvannia" and State Enterprise "Zakhidukrgeologia”. The formation pressures were transformed to one plane of comparison. Also the hydrodynamic characteristics were studied in this work on the basis of the hydrostatic coefficient (P f/P e) in order to evaluate the impact of the factors that determine the nature and form the state of the hydrodynamic field. The maps of the formation pressures and hydrostatic coefficients were constructed and interpreted. Results of researches. It was found out that the parameters of hydrodynamic fields of the Upper Proterozoic, Cambrian, and Lower-Devonian aquifers complexes of the Volyn-Podillya ORG have the features of an exfiltration system. The hydrodynamic tension extends from the most abyssal parts of the sedimentary basin to its peripheral parts. Formation pressures are caused by an increase in the volume of waters due to their squeezing out of clay sediments that have the ability to significant compression into weakly compression sandy rocks. The hydrodynamic energy of the Middle-Upper Devonian aquifer complex is directed from the periphery to its central (the most submerged) part. The peripheral parts have the characteristics of the infiltration water-pressure system. It was established that the hydrodynamic field of the Volyn-Podillya ORG compared with the Bilche-Volytsya ORG is marked by a much lower power due to weak effect of exfiltration in the aquifers and the absence of sustained lithological and tectonic screens. The lateral hydrodynamic field, investigated on the basis of the hydrostatic coefficient, increases from the south to the north. A certain spatial relationship of the isolines of hydrostatic coefficient with diagonal disjunctive breaks is observed. This can determine them as a way of the water-hydrocarbon mixtures migration. Gas deposits of Lokachy and Velyki Mosty fields are located in areas with higher values of the hydrostatic coefficient. Distribution of the hydrostatic coefficient in the section of Lokachi gas field indicates the connection of its overhydrostatic values with the existing gas deposits. Hydrodynamic isolation of the structures promoted conservation of hydrocarbon deposits from mechanical and biochemical destruction.

scholarly journals Hydrogeological characteristics of the Lower Cretaceous terrigenous complex of the Karkinit-Northern Crimean deep in the aspect of its potential for oil and gas presence

2018 ◽  
Keyword(s):  
Chemical Composition ◽  
Lower Cretaceous ◽  
Oil And Gas ◽  
Water Pressure ◽  
Joint Stock Company ◽  
Formation Pressure ◽  
Pressure System ◽  
Composition Formation ◽  
Hydrogeological Characteristics ◽  
Clay Rocks

Purpose. To substantiate the prospects for oil and gas presence in the Lower Cretaceous sediments of the Karkinit-Northern Crimean deep based on hydrogeological (hydrogeochemical, gas-hydrogeochemical and geobaric) features. Methodology. Investigations of formation waters and water-dissolved gases were based on the methods of chemical, elementary spectral and gas chromatographic analyses executed at the laboratories of subsidiary joint-stock company "Chornomornaftogaz", subsidiary "Crimean Geology" and the Institute of Geology and Geochemistry of Combustible Minerals of NASU. For the comparison of formation pressure we applied the hydrostatic coefficient (Ch). Ch is the ratio of measured formation pressure to conditionally hydrostatic at the depth of the measuring with γ=1.000 (Рf/Рch), which eliminates the influence of uneven depths of measurement and different water densities, that is, to get the reduced value. For processing materials Excell, Corell Draw and Surfer are used. Results. Regional features of formation waters in the Lower Cretaceous complex as well as their chemical composition formation conditions are established. According to retrospective data analysis on the Crimean Plains, using the information received on the Black Sea shelf, we come to a conclusion that formation waters of the Lower Cretaceous complex are mainly sedimentogenic. The sulfate-natrium (S.Na) waters of the basal horizon and the Lower Cretaceous aquiferous complex most likely are infiltrative. This is evidenced by the decrease in the indicators of metamorphism of rCa/rMg, r(Cl-Na)/rMg and the increase in Cl/Br to over 1000, the lowered content of iodine (J) and bromine (Br). Infiltrative (paleoinfiltrative) waters mixed with primary sedimentogenic waters. This was accompanied by the decrease in their mineralization and thalassogenic trace elements contents in them. Modern infiltration from the land of meteoric waters at depths of more than 2000–3000 meters through the hydrodynamic barriers of the elision water drive system is impossible, but it could be realized at the continental infiltration stages of the foreground development and before the late Cretaceous time. This is evidenced by the continuous continental conditions marked by denudation of rocks. The main processes in the chemical composition formation of formation waters of Cretaceous and Lower Cretaceous complexes could have been: leaching rocks, mixing of infiltrative fresh or saline waters with thalassogenic waters; mixing of these waters with waters of the high temperature (>2000C) dehydration of clay rocks with formation of non-infiltrative (S.Na) and (Hyd.Car.Na) waters. Based on the analysis of the hydrostatic coeficient distribution (Ch) in the basal and Lower Cretaceous aquiferous complexes the existence of the elision water pressure system within the Karkinit-Northern Crimean deep is confirmed. The cause of overhydrostatic pressures is most likely to be the dehydration of clay rocks and the intrusion of deep gases. Geobaric conditions and filtration parameters suggest that the water flows of the elision water pressure system can move from the deepest parts of the Karkinit-Northern Crimean deep towards its sides. Originality and practical significance. The nature and forming conditions of formation waters have been substantiated. According to gas-hydrogeochemical and geobaric features it was possible to distinguish localities promising for hydrocarbon prospecting in the Lower Cretaceous deposits.

Hydrogeological conditions of the Mesozoic hydrogeological basin within the Russkoye gas and oil field

2020 ◽  
pp. 20-35
Author(s):  
V. A. Beshentsev ◽  
Yu. I. Salnikova ◽  
S. V. Vorobjeva
Keyword(s):  
Oil And Gas ◽  
Water Pressure ◽  
Regional Distribution ◽  
Geological Structure ◽  
Oil Field ◽  
Natural Conditions ◽  
Gas Field ◽  
Pressure System ◽  
The Earth ◽  
Oil And Gas Field

The article is devoted to the hydrogeochemical conditions of the Mesozoic hydrogeological basin within the Russkoye oil and gas field. The text gives valuable information on the natural conditions, geological structure, geotemperature regime of the bowels of the Earth and the composition of groundwater of the Aptian-Albian-Cenomanian, Neocomian, and Jurassic hydrogeological complexes. The change in the composition of groundwater in the section of the AptianAlbian-Cenomanian complex has been revealed. Vertical inversion zoning that traces the underlying the Neocomian complex is established. We describe the main features of the regional distribution of reservoir pressures. Hydrodynamic schemes of the Aptian-Albian-Cenomanian, Neocomian, and Jurassic hydrogeological complexes are given in the article. These schemes show that the Russkoye gas and oil field is located in the zone of low reservoir pressures. The above vertical inversion zoning and low reservoir pressures are associated with the location of the field within the elisional hydrodynamic water pressure system of the Yamal-Gydan lineaments. The data of the block-fault model of the considered field were used in the course of the study. The block-fault structure predetermined the migration of hydrocarbons and the formation of tectonically screened deposits.

scholarly journals Sustainable Development of Oil and Gas Potential of the Arctic and Its Shelf Zone: The Role of Innovations

2020 ◽  
Vol 8 (12) ◽  
pp. 1003
Author(s):  
Diana Dmitrieva ◽  
Natalia Romasheva
Keyword(s):  
Sustainable Development ◽  
Oil And Gas ◽  
Innovation Policy ◽  
The Arctic ◽  
Shelf Zone ◽  
Innovation Activity ◽  
The Sustainable Development ◽  
Stage Of Development ◽  
Gas Potential

Currently, the Russian oil and gas industry is characterized by significant reserves depletion and the late stage of development of most fields. At the same time, new fields that are brought into industrial development, in the majority of cases, have hard-to-recover reserves. Furthermore, most prospective oil and gas deposits are located in the Arctic and its offshore territories and their development is much more complicated due to regional peculiarities. This substantiates the necessity of a special approach to the development of the oil and gas potential of the Arctic, based on innovation. The goal of the paper is to reveal the role of innovation activity in the sustainable development of the oil and gas potential in the Arctic and its offshore zone. The paper briefly presents the main urgent factors of Arctic development, which highlight the necessity of innovation for its sustainability. Then, it introduces the methods used for the research: the Innovation Policy Road mapping (IPRM) method in accordance with Sustainable Development Goals (SDGs) concept for clarifying how innovations will lead to sustainable development. In terms of results, this paper presents an innovation policy roadmap for the sustainable development of oil and gas resources of the Russian Arctic and its shelf zone and identifies the role of innovation within this development.

Fluid Geodynamics of Deeply Buried Zones of Oil and Gas Accumulation in Sedimentary Basins

2021 ◽  
Vol 62 (08) ◽  
pp. 878-886
Author(s):  
L.A. Abukova ◽  
Yu.A Volozh
Keyword(s):  
Water Exchange ◽  
Oil And Gas ◽  
Hydrodynamic Instability ◽  
Sedimentary Cover ◽  
Sedimentary Basins ◽  
Earth’S Crust ◽  
Void Space ◽  
Gas Generation ◽  
Gas Accumulation ◽  
Earth's Crust

Abstract —We substantiate certain ideas concerning the key role of fluid-geodynamic processes in the evolvement of hydrocarbon accumulations at great depths, in the Earth’s crust. The presented geodynamic model of oil and gas accumulation is based on updated ideas of the structure of the Earth’s tectosphere, which includes plate, preplate, and folded complexes, and the model makes clearer the spatial scale of the organic matter transformation into hydrocarbons of the oil series. In the bottom layers of the Earth’s crust, we predict the existence of a special stagnation type of water-drive systems with the following distinguishing features: (a) different scales of manifestation, from local to regional; (b) a limited nature of processes of water exchange with the external environment; (c) absence of persistent drainage horizons (beds and interbeds); (d) alignment of hydrodynamic potentials in terms of depths and laterals; and (e) increasing importance of lithohydrochemical and organic-chemistry factors in the development of the void space of the fluid host medium. In their inner space, systems with difficult water exchange can exercise control over the evolvement and preservation of autoclave hydrocarbon systems for a long time, the key feature of the autoclave systems being spatial coincidence (localization) of the processes of oil and gas generation and accumulation. We assume that, in the settings of all-round compression, hydrodynamic instability, and no drainage, occurrence of productive zones is controlled by foci of low pore (reservoir) pressures rather than by local hypsometric highs. We present results of prediction of the development of water-drive stagnation systems occurring in the subsalt deposits of the Caspian depression within the unpenetrated areas of the subsalt profile. For the sedimentary cover at large (and ultralarge) depths, a prediction of reservoir pressures was made, which can be regarded as a necessary component in any prediction of oil and gas potential, since it makes it possible to contour some new (previously unknown) industrially significant zones of hydrocarbon accumulation.

scholarly journals HYDROGEOCHEMICAL CONDITIONS OF THE MESOZOIC HYDROGEOLOGICAL BASIN IN THE TERRITORY OF THE YARUDEY OIL AND GAS CONDENSATE FIELD

2018 ◽  
pp. 15-20
Author(s):  
V. A. Beshentsev ◽  
I. G. Sabanina ◽  
O. G. Beshentseva ◽  
R. N. Abdrashitova
Keyword(s):  
Oil And Gas ◽  
Water Pressure ◽  
Base Plate ◽  
Gas Condensate ◽  
Sodium Ion ◽  
Salt Composition ◽  
Pressure System ◽  
Underground Waters

Hydrogeochemical conditions of the Yarudey oil and gas condensate field are largely determined by its position within the elysion lithostatic water pressure system and the presence of a large number of faults in the base plate. In the article we explore the main features of the Neocomian and the Jurassic hydrogeological complexes of the field. Underground waters of the Mesozoic hydrogeological basin are characterized by chloride sodium ion-salt composition. They belong to the hydrocarbonate sodium type according to V. A. Sulin’s classification, mineralization is 7,0 g/l in the Neocomian complex and is 11,1 g/l in the Jurassic complex. The existence of complex hydrogeochemical conditions is confirmed by the nature of the change in the genetic sodiumchlorine coefficient (up to 1,4) and boron-bromine coefficients (up to 0,49).

The Role of Migration in the Formation of Regional Labour Markets Amidst the Second Wave of Depopulation in Modern Russia

2020 ◽  
Vol 27 (6) ◽  
pp. 26-36
Author(s):  
A. V. Topilin ◽  
A. S. Maksimova
Keyword(s):  
Labour Market ◽  
Oil And Gas ◽  
Labour Markets ◽  
Labour Migration ◽  
Sample Surveys ◽  
Balance Sheets ◽  
Permanent Migration ◽  
Regional Labour Markets ◽  
The Impact

The article reflects the results of a study of the impact of migration on regional labour markets amidst a decline in the working-age population in Russia. After substantiating the relevance of the issues under consideration, the authors propose a methodological analysis toolkit, the author’s own methodology for calculating the coefficients of permanent long-term external and internal labour migration in regional labour markets, and the coefficient of total migration burden. In addition, the authors provide an overview of the information and statistical base of the study. According to current migration records, data of Rosstat sample surveys on Russian labour migrants leaving for employment in other regions, regional labour resources balance sheets based on the calculated coefficients of labour market pressures, the authors analyzed the impact of migration on the Russian regional labour markets over the past decade. It revealed an increasing role of internal labour migration in many regions, primarily in the largest economic agglomerations and oil and gas territories. At the same time, the role of external labour migration remains stable and minimum indicators of the contribution of permanent migration to the formation of regional labour markets continue to decrease. It has been established that irrational counter flows of external and internal labour migration have developed, which indicates not only an imbalance in labour demand and supply but also a discrepancy between the qualitative composition of migrants and the needs of the economy. It is concluded that the state does not effectively regulate certain types of migration, considering its impact on the labour market. The authors justified the need for conducting regular household sample surveys according to specific programs to collect information about labour migrants and the conditions for using their labour. In addition to the current migration records, using interregional analysis, this information allows making more informed decisions at the federal and regional levels to correct the negative situation that has developed in the regional labour markets even before the coronavirus pandemic had struck.

PROBLEMS OF THE FORMATION OF REVENUES OF REGIONAL BUDGETS IN THE RUSSIAN FEDERATION

2020 ◽  
Vol 2 (8) ◽  
pp. 83-87
Author(s):  
B. Kh. ALIYEV ◽  
Keyword(s):  
Russian Federation ◽  
Present Stage ◽  
Budget Planning ◽  
Budgetary Policy ◽  
Stage Of Development ◽  
The Russian Federation ◽  
The Republic ◽  
Regional Authorities ◽  
Regional Budgets

In the Russian Federation, the problem of budget planning becomes especially relevant when the pace of economic development slows down. The article examines the features of the formation of regional budgets, using the example of the budget of the Republic of Dagestan. The analysis of incomes to the budget is carried out. The role of regional taxes in the formation of budget revenues of the Republic of Dagestan is revealed. According to the results of the study, it can be concluded that the budgetary policy of the regions at the present stage of development of the Russian economies does not contribute to a further increase in the rates of economic growth. The article offers recommendations for improving the regional budgetary policy of the Russian Federation and increasing the responsibility of regional authorities.

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