Gas-bearing Regions Research Articles

Bazhenov formation anomalous section within the Uvat oil and gas bearing area

Relevance. The need to bring undeveloped sediments of the Bazhenov horizon to development in areas that are well explored and have developed infrastructure. Objects. Anomalous section deposits of the Bazhenov Formation (J3-K1bn) of Western Siberia within the Uvat oil and gas bearing region. Aim. To ascertain the spread boundaries and structure parametrization of sediments of the Bazhenov formation anomalous section within the Uvat oil and gas bearing region through an integrated analysis of the core material study results, GIS and seismic data. Methods. Photomaterials of three core samples and the results of macro- and micro-description of rocks, measurement of natural radioactivity on the core by the spectrometric gamma-ray logging, palynological and microfaunistic studies. To clarify the structure of the Bazhenov formation, geophysical well surveys and 3D seismic data were used. The logging materials are represented by 154 wells and include the following methods: intrinsic polarisation, gamma ray logging, induction, neutron and lateral logs. Results. The authors have carried out the analysis of the Bazhenov formation sediments within the Uvat oil and gas bearing area. They carried out the lithological and petrographic analysis of the formation sediments in thin sections and determined the contribution of radioactive elements to the total natural radioactivity, according to which, in combination with GIS data, the Bazhenov formation was differentiated into rocks of mainly siliceous composition, siliceous-carbonate rocks, mudstones and sandy-silty mudstones. Biostratigraphic studies of samples of the Bazhenov formation were analyzed. The deposits of the Bazhenov formation are dated by the Titonian (Volga) Stage, part of which is represented by a mixed composition containing both the amorphous organic matter typical of the Bazhenov formation and the Valanginian or Valanginian-Goterivian palynoforms of good preservation. The authors clarified the boundary of the Bazhenov formation anomalous section in the Uvat oil and gas area: in comparison with the previously established contours of distribution, the eastern boundary shifted to the west, due to which the total area of the anomalous section reduced almost twofold; the contours of the north-eastern border of Bazhenov formation anomalous section were slightly revised and shifted to the south-west direction. The obtained data indicate that the Bazhenov formation anomalous section formation was caused by the introduction of Valanginian-Gotterivian deposits into the Tithonian-Berriasian deposits of protobagenite, which confirms the geomechanical model of the Bazhenov formation anomalous section formation.

Prospects of early Jurassic deposits within the Khapchagay megaswell of the Vilyuy syneclise

The study of terrigenous Jurassic deposits in the Vilyuy syneclise has become increasingly important. This is because the fields contains shallow gas reserves and were first discovered in anticline traps during the 1960s. Renewed geological exploration in this region is now providing valuable new geological and geophysical data. The aim of research is to select exploration criteria for locating hydrocarbon deposits in the territory. Seismic exploration is a leading method of research. Based on this, an analysis is conducted on the characteristics of hydrocarbon gas deposit formation and distribution within the early Jurassic stratigraphic complex of the Vilyuy oil and gas Vilyuy oil and gas bearing region. In particular, the Khapchagay megaswell has been analyzed. The study has identified the Nedzhelinskoye local uplift as an inversion structure. A dynamic anomaly of the "bright spot" type is observed at the roof of the productive lower Jurassic deposits of the Kyzylsyr suite in the central block. Well tests confirmed the difference in hydrocarbon fluid saturation between the western and eastern parts of the Nedzhelinskaya structure. The presence of dynamic anomalies of inversion type can be seen as an exploration indicator for hydrocarbon accumulation zones in the terrigenous deposits of the Vilyuy syneclise. This is a practical significance of the work.

РЕЗУЛЬТАТЫ ПРИМЕНЕНИЯ СТАТИСТИЧЕСКОГО МЕТОДА ДЛЯ ПРОГНОЗА НЕФТЕГАЗОНОСНОСТИ ТЕКТОНО-КОНЦЕНТРИЧЕСКИХ СТРУКТУР ДАЛЬНЕГО ВОСТОКА РОССИИ С ИСПОЛЬЗОВАНИЕМ ЭТАЛОННЫХ ТЕРРИТОРИЙ

he paper presents the results of using the statistical method to analyze geological and geophysical data measured within several tectonic-concentric structures in oil and gas-bearing regions in the Far East of the Russian Federation (depth of the Mohorovichi surface, depth of the the lithosphere bottom, values of geothermal energy). The distribution and values of some statistical parameters (histograms, distribution densities, probabilities, median and mean values) used for forecasting zones of hydrocarbon deposits location have been calculated. It was found that the most informative initial data used for statistical prediction of areas of location of oil and gas deposits are the presence of concentric zones at the depth of the Mohorovichich surface, and concentric inhomogeneites at the lower boundary of the lithosphere associated with the «root» structures of paleo-mantle plumes. Based on the calculated statistical parameters, four local tectonic-concentric structures promising for prospecting new oil and gas fields were identified.

Some questions of the connection between mud volcanism and seismicity in Azerbaijan

The article discusses some issues of the genetic connection between mud volcanic activity in Azerbaijan and seismicity, the results of monitoring studies of mud volcanoes characterized by active gryphon-salsa activity between eruptions located in tectonic structures of different ages. For the first time, an anomalous change in Br and J, mainly associated with Paleogene-Miocene deposits, was established in the chemical composition of the studied waters based on hydrogeochemical indicators of volcanic activation. The established differences in the studied waters are associated with the location of mud volcanoes within different oil and gas bearing regions of Azerbaijan and the lithofacies features of terrigenous-carbonate rocks in mud volcanic breccia. The above measurements of the temperature of waters carried by mud volcanoes to the earth’s surface confirmed the previously obtained results: during quiet activity of volcanoes, fluids are carried out from Pliocene deposits, and when their gryphon-salsa activity is activated, they are diluted with fluids coming from the depths of the Paleogene-Miocene age. Analyzing various intervals of “rest” between eruptions of mud volcanoes, tracing changes occurring in small crater fields (cracks, subsidence, etc.), the seismogeological material we have accumulated allows us to make an estimated forecast (as a long-term one) of the eruption of a mud volcano within one year.

Clarification of the genesis of deposits of Qala Suite of the Hovsan-Zykh area by methods of stratigraphic and lithofacies analysis based on 3D seismic and Well Logging data (Absheron oil and gas bearing region, Azerbaijan)

Clarification of the genesis of deposits of Qala Suite of the Hovsan-Zykh area by methods of stratigraphic and lithofacies analysis based on 3D seismic and Well Logging data (Absheron oil and gas bearing region, Azerbaijan)

Prospectivity of Pliocene-Miocene deposits of the Khasilat field of the Absheron oil and gas bearing region according to surface and well seismic data

Prospectivity of Pliocene-Miocene deposits of the Khasilat field of the Absheron oil and gas bearing region according to surface and well seismic data

Оценка промышленной газоносности Ямальской и Гыданской нефтегазоносной области

In accordance with the strategic planning documents of the Russian gas industry, the development of the Yamal and Gydan oil and gas bearing regions is one of the priority tasks, as they are associated with the formation of a strategic reserve of gas resources and the creation of new gas production centers. The article analyses the spatial distribution of natural gas reserves in the oil and gas bearing areas of the Arctic region and concludes that the distribution of free gas resources is uneven both by section and by area. Some oil and gas bearing areas are characterized by a weak degree of geological and geophysical study. Depletion of the base fields in the Pur-Taz and Nadym-Pur oil and gas bearing areas raises the question of shifting the raw material base of the gas industry to the hard-to-reach areas of Yamal and Gydan, including the waters of the Kara Sea, the Ob, Taz and Gydan Bays. The paper provides a quantitative assessment of the level of commercial gas content of the Yamal and Gydan oil and gas bearing areas, including in the context of oil and gas bearing regions. It was determined that based on the technology of field development, processing and transportation scheme when assessing the prospects of development and options for monetization of gas resources, a zone of pipeline transport and a zone of liquefied natural gas are distinguished. Taking into account the current economic conjuncture of Arctic natural gas reserves development, it is reasonable and promising at this point in time to expand the resource base by developing satellite fields in Yamal and Gydan oil and gas bearing regions, which already have developed production, processing, transport and social infrastructure, as well as through additional exploration of discovered and developed fields and deposits.

Selection of areas prospective for the search of primary hydrogen in the territory of Ukraine (based on the data of the 3D P-velocity model of the mantle)

The work aimed to identify promising areas for the search for primary hydrogen in Ukraine using a 3D P-velocity model of the mantle under Ukraine and its surroundings. The work uses a 3D P-velocity model of the mantle under the territory of Ukraine and its surroundings from a depth of 50 to 1700 km north of 50° NL and up to 2500 km to the south. The model is derived using ISC bulletin data from 1964 and is presented as horizontal and vertical cross-sections.
 Since the manifestation of hydrogen is primarily associated with the release of ultra-deep fluid tracks in the mantle, a brief analysis of them was presented. A detailed analysis of all nine superdeep mantle fluids isolated on the territory of Ukraine and their velocity characteristics was carried out. A comparison of the location of the routes of passage of superdeep fluids and the velocity structure of the mantle of the considered territory showed that they are confined to tectonically activated areas. In order to confirm the possible pre­sence of primary hydrogen in selected tracks of superdeep mantle fluids, heat flow density maps, a temperature map at a depth of 50 km, a map of the depth of the Moho boundary, a conductivity density map, and a fault map of the Ukrainian Shield were considered.
 A comparative analysis of maps of the location of superdeep mantle fluids and regions on the territory of Ukraine with increased heat flow, increased depth of the Moho boun­dary, and the presence of mantle conductors and faults was carried out. Summarizing the results of the comparative analysis, the most promising areas for the search for primary hydrogen were selected, corresponding to the following routes of superdeep fluids: f12, the northeastern part of f3, the southern part of f4 (the area of the Dnipro-Donetsk basin), the southwestern part of f1 (the area of the Western Ukrainian oil and gas-bearing region) and f9 and f10 (region of the South Crimean oil and gas-bearing province).

Gravity Field Numerical Analysis and Depth Structure of the South-Eastren Caucasus

In this paper, the gravity anomalies of the Bouguer of the Absheron, Shamakhi-Gobustan and Pricaspian-Guba oil- and gas-bearing regions are interpreted by the 3D prism method. According to this model, a part of the earth's crust covering the crystalline basement is considered as a set of many prisms located nearby. The depth of the surface of the crystalline basement is calculated taking into account the change in density at the bottom of the low velocity zones of the upper part of the earth's crust and the dependence of the density difference on depth according to a quadratic law.
 For interpretation of the gravity anomalies in the Absheron, Shamakhy-Gobustan and Pricaspian-Guba regions, a sedimentary basin viewed as, a number of prisms placed in juxtaposition. The decrease of density contrast in sedimentary basins approximated by, a quadratic function. The contour map is sampled at 1160 equispaced points with 5 km interval. The depths to the interface separating sedimentary were calculated using a generalized computer program GR3DSTR for 3-D inversion of gravity data either for a constant density contrast or for a variable density contrast with depth.
 From 3D gravity model of the sedimentary layer, it was found that the maximum depth is in the areas of Gyuzdek and Meraza (11 km), and the minimum is in the areas of Gonakkend, Gilazi, Garabulag, Dubrar (4 km).
 The depth of the sedimentary layer around the Agzibirchala well varies within 6 km. The correlation of the distribution of the thickness of the sedimentary layer on the site with the seismic section and well sections was determined.
 KEYWORDS – gravity anomaly, sedimentary basin, oil and gas fields.

Indirect effects of oil products on the environment

The article is focused on chemical and radioactive contamination of the environment during hydrocarbon production. The objective of the research is to present relatively unknown facts of indirect long-term environmental effects of hydrocarbon production. Traces of radioactive contamination of soils, ground- and surface water were studied, and also in drinking water in the Republic of Bashkortostan. The authors’ own field and laboratory studies were used. They were performed as part of the preparation of geochemical base map (GHO-1000) of 1:1000000 scale in the Republic of Bashkortostan and in the Ukhto-Izhemsky oil and gas bearing region. The methods applied for laboratory research were inductively coupled plasma mass spectrometry (ICP-MS) for soil and bottom sediment samples and atomic emission spectrometry (ICP-AMS) for ground- and surface waters. It has been determined that in the areas affected by oil production the chemical pollution aspects include deterioration of the groundwater quality caused by associated water and oil products ingress into aquifers due to violation of the oil and gas well drilling techniques, and soil salination caused by frequent equipment breaks during oil production. Aspects of radiation contamination of the environment during oil production include the intake of radionuclides with associated water, and sometimes with heavy hydrocarbon fractions, as well as the consequences of underground nuclear explosions. It is concluded that the territories of hydrocarbon exploration, production and storage should be classified as areas of potential risk for radioactive contamination and chemical pollution (by inorganic compounds, including heavy metal salts). Uranium concentration in drinking water was determined by the INAA method (instrumental neutron activation analysis).

Оil- bitumum saturation Mesozoic and cenozoic deposits in central Asia

The article discusses the distribution patterns and formation conditions of natural bitumen and high-viscosity oil accumulations in Central Asia, and gives their geochemical characteristics, classification and genetic types. Based on the analysis of the geochemical characteristics of heavy natural bitumens and high-viscosity oils within the Fergana, Afghan-Tajik, Zarafshan and Bukhara-Khiva oil and gas bearing regions (BKhOGR), four types of natural bitumen accumulations and three groups of high-viscosity oils, which differ not only by the spread area but also by the material composition of hydrocarbons, were identified. On the basis of the analysis and generalisation of the results of geochemical research within the study area, the main factors for the formation of different types of natural bitumens and high-viscosity oils in Central Asia have been identified and substantiated.

Raw hydrocarbons base of the republic of Uzbekistan - growth and production structure

The article considers the existing, actual raw material base of hydrocarbon raw materials of the Republic of Uzbekistan. Brief information is given on the number of discovered oil and gas fields, their distribution in the oil and gas regions of the republic, according to the degree of development, the type of fluids and the size of the reserves. Share participation of initial total resources in the context of oil and gas bearing regions is shown. Information is presented on the results of exploration work of two time periods - before 1991 and from 1991 to the present, where the growth rates of reserves of industrial categories for the first and second stages and the distribution of cumulative oil and gas production are considered. From the above data, it can be seen that the main increase in hydrocarbon reserves in the Republic of Uzbekistan was due to the discovery of unique and large fields in terms of hydrocarbon reserves. Based on the results of the analysis of the actual material, a con-clusion was made, indicating the high potential of the subsoil of the Republic of Uzbekistan and the feasibility of conducting exploration work in the long term, given the presence of significant forecast hydrocarbon resources. Keywords: field; oil; gas; hydrocarbons; reserves; oil and gas potential; initial total resources.

Современные подходы к реализации проектов по бурению скважин различной классификации на разных стадиях геолого-разведочных работ

The problem of obsolescence and irrelevance of the standard classification of drilling wells for the intended purpose and a new interpretation of this classification within the framework of modern reality are considered. It is noted that the search for new ways to obtain information during geological exploration leads to the understanding that drilling some types of wells is already completely impractical. In the current situation, projects should be implemented that, on the one hand, will ensure the solution of the set geological tasks, on the other hand, minimize the costs of drilling wells, reduce industrial and environmental risks, with the unconditional receipt of the entire set of required geological information. The complex of works applied in the waters of the inland seas, for the purpose of prospecting, exploration and development of oil and gas fields, can become an example of rational money savings and the efficiency of geological data collection. Currently, the share of large structural deposits of simple structure is completely insignificant, and there are practically no promising oil and gas-bearing areas on land. Current realities are such that geological exploration works penetrate deep horizons of the Earth's crust with a complex geological structure and cover oil and gas-bearing regions located in remote and remote parts of the land. The complex implemented at sea may well be applicable for such sites and will successfully compensate for anachronistic drilling methods.

Features of the geological structure of the Achimov complex of the Yarudeisky megaswell (Western Siberia)

This work is devoted to the peculiarities of sedimentation and geological structure of clinoform deposits of the Yarudeisky megaswell (Western Siberia). The main feature of the clinoforms under consideration is that the sediments are confined to the marginal regional clinocyclite of the western dip of the area of oncoming clinoforms, formed in relatively shallow sea conditions and differing from deep-sea clinoforms by pinching out not onto the Bazhenov formation or the early underlying clinoforms of the western dip, but by stopping their spread along the path of movement of the oncoming clinoforms eastern dip. The study of the counter clinoforms of the Yarudeisky megaswell is based on a regional analysis of the structure of cross-layered deposits in conditions of extremely poor knowledge of the study area. Within the framework of western dipping clinoforms, possible oil and gas potential prospects for the Achimov complex within the boundaries of the Yarudeisky megaswell are identified. As a result of the analysis of geological and geophysical data, the boundaries of the distribution of opposing clinoform complexes in the study area were determined. The existing paleo-geomorphological conditions that contribute to the accumulation of sandstone with improved properties in the designated seismic complexes are presented. The fields of the Nadym oil and gas bearing region with the proven productivity of the Neocomian clinoform complex are indicated, which confirms the oil and gas potential of the region and suggests favorable conditions for the accumulation of hydrocarbons in the study area.

Quantitative characterization of tight gas sandstone reservoirs using seismic data via an integrated rock-physics-based framework

Seismic characterizing of tight gas sandstone (TGS) reservoirs is essential for identifying promising gas-bearing regions. However, exploring the petrophysical significance of seismic-inverted elastic properties is challenging due to the complex microstructures in TGSs. Meanwhile, interbedded structures of sandstone and mudstone intensify the difficulty in accurately extracting the crucial tight sandstone properties. An integrated rock-physics-based framework is proposed to estimate the reservoir quality of TGSs from seismic data. TGSs with complex pore structures are modeled using the double-porosity model, providing a practical tool to compute rock physics templates for reservoir parameter estimation. The VP/VS ratio is utilized to predict the cumulative thickness of the TGS reservoirs within the target range via the threshold value evaluated from wireline logs for lithology discrimination. This approach also facilitates better capturing the elastic properties of the TGSs for quantitative seismic interpretation. Total porosity is estimated from P-wave impedance using the correlation obtained based on wireline log analysis. After that, the three-dimensional rock-physics templates integrated with the estimated total porosity are constructed to interpret microfracture porosity and gas saturation from velocity ratio and bulk modulus. The integrated framework can optimally estimate the parameters dominating the reservoir quality. The results of the indicator proposed based on the obtained parameters are in good agreement with the gas productions and can be utilized to predict promising TGS reservoirs. Moreover, the results suggest that considering microfracture porosity allows a more accurate prediction of high-quality reservoirs, further validating the applicability of the proposed method in the studied region.

Petrophysical characteristics of carbonate rocks of organogenic structures of late devonian age (Voronezh horizon) in Orenburg region

Background. The carbonate rocks represented by organogenic structures of the Voronezh horizon (D3vr) at the Volostnovsky, Vostochno-Volostnovsky and Yuzhno-Volostnovsky fields in the northern part of the East-Orenburg oil and gas bearing region of the Volga-Ural oil and gas bearing province are studied.Aim. To establish a connection between the structures of lithological types of carbonate rocks and their reservoir properties within the organogenic structures of the Voronezh horizon at the Volostnovsky, Vostochno-Volostnovsky and Yuzhno-Volostnovsky deposits.Materials and methods. Stock materials on the geological structure of the northern part of the Vostochno-Orenburg district were used. Histograms of the distribution of porosity and permeability values were constructed. A petrophysical model was proposed followed by its verification and analysis.Results. Data on the filtration-capacitance properties of carbonate rocks were analyzed. Histograms reflecting changes in porosity and permeability for individual zones of organogenic structures were constructed. A petrophysical model describing the relationship between the lithological characteristics of rocks of the selected zones and their reservoir properties was proposed. The model was verified based on the data on the Volostnovsky site and neighboring deposits.Conclusion. The carbonate reservoirs of the Voronezh horizon are characterized by a complex structure with degraded reservoir properties. This information should be taken into account when developing deposits to ensure an increase in geological oil reserves and an extended service life of wells.

The role of the structural-tectonic characteristics of Caspian-Guba oil-gas bearing region in formation of underground water reserves

The article is devoted to the analysis of the impact of structural-tectonic characteristics of the Caspian-Guba oil- gas bearing region on the formation conditions of underground water resources. Based on the analysis of the short chronological sequence of geophysical research carried out by various organizations from the beginning of the last century to the modern era, the author came to the conclusion that geographically the area is a complex structural-tectonic formation, and in this view, it is necessary to conduct new research surveys to study the underground water resources. Particularly, highly accurate geophysical surveys should be carried out in this direction to specify the perspectives of the underground water.

GEOЕTHERMAL OVERVIEW OF UKRAINE

This article is the summary of a report that was presented in March 2023 during the Ukrainian-Spanish cycle of conferences as of 'Global vision of Ukrainian Geology the 'Future of Geothermal Energy in Ukraine', organized by GEO3BCN-CSIC. The geothermal potential of Ukraine can play a key role in accelerating the transition to clean energy. Therefore, this article provides a detailed characteristics of the main types of geothermal sources in Ukraine, such as shallow geothermal, thermal waters and deep geothermal which can be apply for direct use, district heating as well as electricity generation. Analysis of the distribution of deep heat flux values on the territory of Ukraine, which varies from 40 to over 120 mW/m2, allows to identify three main prospective zones, confined to the main oil and gas-bearing regions such as Transcarpathian (west), Steppe Crimea (south) and Dnipro-Donetsk basin (east). The total geothermal potential of Ukraine is estimated at 438*106 kWh p/ year. Annual technically achievable energy potential of geothermal energy in Ukraine is equivalent to 8,4 Mtoe, and its use can save around 10 bcm of natural gas. Currently, the development of geothermal energy is at an initial stage in Ukraine. Only low-temperature thermal waters are used mainly for recreational purposes in Transcarpathia and for heat supply in the Crimea. Therefore, it should be paid valuable attention to additional geothermal research and tools to stimulate the development of geothermal energy in Ukraine. The transition to clean and affordable energy sources will allow to build a new powerful economy, overcome socio-economic challenges, solve the problem of climate change, and also increase the safety and well-being of Ukrainians.

FOAM ACID FRACTURE AS AN ALTERNATIVE TO STANDARD FRACKING AND LIQUID-LESS METHODS OF ROCKS LIQUIDATION

The article discusses the issue of the resource potential of tight terrigenous gas-saturated reservoirs, which lie at significant depths within the central part of the Dnipro-Donetsk oil and gas-bearing region, and ways to solve problems related to the methods of development of these deposits, since they are non-convective and cannot be extracted by the classical method. Within the scope of this issue, the article considers the method of hydraulic fracturing as one of the most effective ways of causing the inflow of hydrocarbons from the productive horizon and intensifying the development of hard-to-extract deposits. An overview of fracturing substances used for the process of densification of rocks, in particular, liquids based on water, hydrocarbon, acid bases, liquid-free methods and foam systems, was performed. The compositions of the reagents, the features of their use, and their main disadvantages are listed. Examples of world experience in the use of well-known fracturing fluids and fluid-free methods of reservoir densification are given.In this work, attention is focused on increasing the permeability of rocks through the use of foam acid systems, since, as experience shows, they are highly effective in conditions of tightand heterogeneous reservoirs due to their selectivity, they can be adapted to rocks of various lithological and mineralogical composition and a wide range thermo-baric conditions, they have satisfactory transport properties and the ability to cause self-cleaning of the well.The main reasons for popularizing the use of methods of loosening rocks with a minimum liquid content in the composition of explosive substances for unconventional gas deposits of Ukraine are highlighted. It is recommended to carry out work on the creation of more effective, ecological and economically profitable new or improvement of existing disintegrants, especially foam systems.

Magnetic characteristics and tectonic structure of the Earth's crust of the Carpathian oil and gas region as a component of complex hydrocarbon criteria

For the first time, a qualitative and quantitative analysis of the geomagnetic field and oil and gas capacity was performed for the territory of the Carpathian region, which made it possible to reveal the connection of hydrocarbon deposits with the magnetization of the Earth’s crust at the regional and local levels and the features of the deep structure of the Earth’s crust according to seismic data. The regularity of the distribution of oil and gas deposits of the Carpathian oil and gas-bearing region revealed by geomagnetic criteria is confirmed by their connection with regional and local anomalies of the gravity field and heat flow density. According to the analysis of the regional geomagnetic field and magnetic models along the PANCAKE and RomUkrSeis geotraverses, gas fields are located above the magnetic blocks of the middle and lower parts of the Earth’s crust or in their marginal parts, and oil fields are located above practically non-magnetic deep blocks. Under the thrust part of the Carpathian arc, the regional features of the Earth’s crust structures are clearly manifested, namely, starting from the longitude of the city of Rakhiv, the submeridional direction of extension of regional anomalies of magnetic, gravity, and thermal fields and their horizontal gradient zones prevails. The oil and gas potential of the region is in good agreement with this — the gas fields are timed to the minimum values of the regional horizontal gradient of the regional magnetic field, to the increased gradient of Bouguet anomalies, as well as to the minimum values of the horizontal gradient of heat flow density anomalies. In local geophysical fields, gas fields are gravitating: to weakly negative magnetic anomalies and their gradient zones; to negative anomalies of the gravitational field predominantly; to positive anomalies of heat flow density in the northwest, within the area of Trans-European suture zone (without the middle of the Krakovets fault), and negative anomalies in the Carpathian trough. Oil and oil condensate deposits are correlated with a band of positive magnetic field anomalies, negative gravity field anomalies, and increased heat flux density values. The main deep faults of the Carpathian region and the marginal part of the Platform in the first approximation can be considered Velikomostivsko-Chernivetsky, which characterizes the change in the character of magnetic and gravity fields and heat flow density, Rava-Rusky, which reflects the zone of articulation of the Eastern and Western European platforms, Pre-Carpathian — the border of the Pre-Carpathian trough and the Folded Carpathians on the Earth’s surface (as well as the boundary of the Archaean(?)-Paleoproterozoic and Meso-Neoproterozoic crust according to the modern international chronostratigraphic scale), as well as the Transcarpathian fault. On the basis of magnetic and seismic data, the hypothetical depth position of these faults and the possible connection with them of hydrocarbon flows into the upper part of the Earth’s crust are proposed. Therefore, the geomagnetic criteria of the oil and gas bearing capacity of the Earth’s crust of the Carpathian region are agreed based on the results of the study of the gravity field and heat flow density anomalies, which makes it possible to predict the spread of oil and oil condensate and gas and gas condensate deposits according to the regional and local features of these fields in a first approximation.