scholarly journals About characteristic features of naftides in connection with the process of formation of deposits

Georesursy ◽  
2021 ◽  
Vol 23 (4) ◽  
pp. 107-115
Author(s):  
Svetlana Punanova
Keyword(s):  
Oil And Gas ◽  
Sedimentary Basins ◽  
Crystalline Basement ◽  
Lateral Migration ◽  
Gas Condensates ◽  
Combined Structure ◽  
The Republic ◽  
High Concentrations ◽  
Characteristic Features ◽  
Hydrocarbon Deposits

Studies have been carried out to assess the qualitative features of fluids, aimed at identifying the regularities in the differentiation of the properties of naphthides during the formation of hydrocarbon deposits outside anticlinal structures. Due to the exhaustion of hydrocarbon reserves associated with anticlinal traps, the main attention is paid to the composition of fluids confined specifically to non-anticlinal structures – to traps of a combined structure. Physicochemical properties, trace element (TE) composition, phase states of naphthides in deposits affected by hypergenetic or catagenetic processes have been analyzed using specific examples; in regions with a possible additional inflow of hydrocarbons (Romashkino group of fields in the Republic of Tatarstan); in the crystalline basement of sedimentary basins. The results of the analysis make it possible to predict the characteristic features of fluids in traps of various types at certain levels of the processes of oil formation, secondary transformation and destruction of accumulations, mainly due to the tectonic regime of the sedimentary basin. With prolonged lateral migration, at great depths with good isolation from surface weathering agents, light oils, depleted in TE, more often of nickel specialization, are found in lithologically and stratigraphically screened traps, and gas condensate accumulations are possible. At shallow depths with poor regional or local seals, heavy, highly viscous hypergene-transformed oils, natural bitumens with high concentrations of industrially significant metals V, Ni, Co, Mo Cd, U were found in traps of pinch-out zones and various types of trap screening. tectonically-screened traps) with a multiphase filling of traps and, at the same time, the influence and inflow of deep ones, i.e. more catagenically transformed fluids, it is possible to detect light oils of the nickel type or gas condensates enriched with elements of “magmatic emanations” – As, Hg, Al, B, rare earth elements. Oils filling combined traps in the crystalline basement within platform oil and gas basins, as a rule, do not differ in their compositional peculiarities in comparison with oils in overlying or adjacent parts of the sedimentary section.

scholarly journals Oil and gas possibility of crystalline basement taking into account development in it of non-structural traps of combined type

Georesursy ◽  
2019 ◽  
Vol 21 (4) ◽  
pp. 19-26
Author(s):  
Svetlana A. Punanova
Keyword(s):  
Oil And Gas ◽  
Oil Production ◽  
Crystalline Basement ◽  
Characteristic Features ◽  
Hydrocarbon Deposits ◽  
Gas Bearing

In this communication, from the perspective of modern views, the following issues are highlighted. A brief overview of the regions – large oil and gas bearing basins, in which hydrocarbon deposits are currently being developed in the deposits of the crystalline basement, is given. The problems of non-anticline-type collector traps, usually non-structural, combined, widely developed in basement deposits, are considered. The existing characteristic features of oils in deposits from a crystalline basement are voiced. As a result of the study, ever-increasing volumes of world oil production from base sediments were noted, the difficulty of identifying and classifying traps in it, and the almost lack of originality of the composition of oils in the foundation compared with oils in the overlying or adjacent parts of the sedimentary section, are shown.

Main directions of searching for hydrocarbons in Nadym-Pursk oil and gas region

2021 ◽  
pp. 23-31
Author(s):  
Y. I. Gladysheva
Keyword(s):  
Oil And Gas ◽  
Raw Materials ◽  
Accumulation Rate ◽  
Sedimentary Basins ◽  
Seismic Exploration ◽  
Research Approach ◽  
Field Development ◽  
The North ◽  
The Sixties ◽  
Hydrocarbon Deposits

Nadym-Pursk oil and gas region has been one of the main areas for the production of hydrocarbon raw materials since the sixties of the last century. A significant part of hydrocarbon deposits is at the final stage of field development. An increase in gas and oil production is possible subject to the discovery of new fields. The search for new hydrocarbon deposits must be carried out taking into account an integrated research approach, primarily the interpretation of seismic exploration, the creation of geological models of sedimentary basins, the study of geodynamic processes and thermobaric parameters. Statistical analysis of geological parameters of oil and gas bearing complexes revealed that the most promising direction of search are active zones — blocks with the maximum sedimentary section and accumulation rate. In these zones abnormal reservoir pressures and high reservoir temperatures are recorded. The Cretaceous oil and gas megacomplex is one of the main prospecting targets. New discovery of hydrocarbon deposits are associated with both additional exploration of old fields and the search for new prospects on the shelf of the north. An important area of geological exploration is the productive layer of the Lower-Berezovskaya subformation, in which gas deposits were discovered in unconventional reservoirs.

scholarly journals Assessment of the Generation Potential of the Emsk-Timan Deposits in the Republic of Udmurtiya

2020 ◽  
Vol 19 (4) ◽  
pp. 396-400
Author(s):  
E. E. Kozhevnikova ◽  
Keyword(s):  
Organic Matter ◽  
Quantitative Assessment ◽  
Oil And Gas ◽  
Gas Source ◽  
Udmurt Republic ◽  
The Republic ◽  
Hydrocarbon Deposits ◽  
Mixed Mechanism

The article presents materials on the study of the generation potential of the Emsko-Timan deposits of the Udmurt Republic. The study of the conditions of sedimentary accumulation, geochemical facies at the stage of diagenesis was carried out. Quantitative assessment of the generation potential of the studied complex is given, and the density of organic matter of rocks is calculated that made it possible to identify the local zones of distribution of oil and gas source formations. Correlation of oils of the studied complex with oils above and below-lying complexes has been carried out. It was found that the process of generation of hydrocarbon deposits of the studied complex had a mixed mechanism. Probably, this process involved not only the oil and gas source formations of the terrigenous Devonian, but also the oil and gas source formations above and below the complexes.

scholarly journals Prediction of the phase state of hydrocarbon deposits in traps of a combined structure

2021 ◽  
pp. 15-27
Author(s):  
S.A. Punanova ◽  
A.V. Samoilova
Keyword(s):  
Trace Element ◽  
Oil And Gas ◽  
Phase State ◽  
Trace Element Composition ◽  
The Caspian Sea ◽  
Hydrocarbon Production ◽  
Thermobaric Conditions ◽  
Combined Structure ◽  
Hydrocarbon Deposits

The possibilities of predicting the phase state of hydrocarbon deposits by geochemical methods are considered. The article briefly describes the well-known gas-geochemical and petrochemical forecasting methods, and also proposes to use trace element indicators of fluids for these purposes. Based on the study of the distribution of the trace element composition of oils and condensates in Western Siberia, Turkmenistan, the Caspian Sea region, New Zealand and some other regions, the trace element geochemical indicators of naphthides are recommended for diagnostics of oil and gas condensate systems. The fact of the presence of trace elements in the light fractions of hydrocarbon fluids and the revealed genetic differences between oils and condensates make it possible to use trace element characterization of fluids for practical problems of oil and gas prospecting geology. Since by now hydrocarbon production reserves in anticlinal structures is nearing exhaustion, considerable attention is paid to complex combined traps confined to greater depths and severe thermobaric conditions.

scholarly journals STRUCTURE OF EXPLORED HYDROCARBON POTENTIAL OF THE REPUBLIC OF KAZAKHSTAN

Neft i gaz ◽  
2020 ◽  
Vol 6 (120) ◽  
pp. 60-73
Author(s):  
О.S. TURKOV ◽  
Keyword(s):  
Oil And Gas ◽  
Raw Materials ◽  
Sedimentary Basins ◽  
Oil Reserves ◽  
Leading Role ◽  
Oil And Gas Fields ◽  
Small Fields ◽  
The Republic ◽  
Giant Fields ◽  
Gas Fields

The development of the economy of the Republic of Kazakhstan is largely based on a powerful base of mineral raw materials. The leading role is played by huge reserves of oil and gas. They are located in 6 oil and gas sedimentary basins of Western and Eastern Kazakhstan. More than 350 oil and gas fields have been explored in them, containing over 6.4 billion tons of recoverable oil reserves and about 4.5 trillion m3 of gas. The main volumes of oil reserves (85.2%) are concentrated in 25 large and giant fields. Numerous small objects contain only 5.3% of the reserves. In the changed situation on the world oil market, the development of such small fields with recoverable reserves of less than 1.0 million tons becomes unprofitable. In further work in new promising basins, one should focus on prospecting, first of all, large and medium-sized deposits

scholarly journals PROSPECTIVE SEISMIC LITOFACIES OF CARBON DEPOSITS IN THE NORTHERN EDGE OF DNIEPER AND DONETS SEDIMENTARY BASINS’ JUNCTION ZONE WHILE EXPLORING UNCONVENTIONAL HYDROCARBON DEPOSITS

2013 ◽  
pp. 87-92
Author(s):  
L. Martynyuk ◽  
I. Karpenko ◽  
O. Okrepkyi
Keyword(s):  
Oil And Gas ◽  
Sedimentary Basins ◽  
Alluvial Plain ◽  
Junction Zone ◽  
Carbon Deposits ◽  
Sedimentation Environment ◽  
Northern Edge ◽  
Hydrocarbon Deposits

Authors substantiate that this territory in carbon time developed mainly in the alluvial plain situation. Also we analyzed prospective for oil and gas sedimentation environment. The most prospective areas evaluated to be distributed in branched rivers.   

scholarly journals Vertical thermobaric zoning of hydrocarbon deposits of the Eastern oil- and gas-bearing region of Ukraine

2019 ◽  
Vol 3 (180) ◽  
pp. 60-75
Author(s):  
Oleksandr Prykhodko ◽  
Ihor Hrytsyk ◽  
Ihor Kurovets ◽  
Svitlana Melnychuk
Keyword(s):  
Oil And Gas ◽  
Vertical Section ◽  
Sedimentary Basins ◽  
Geological Structure ◽  
The North ◽  
Northern Edge ◽  
Different Depths ◽  
Hydrocarbon Deposits ◽  
Gas Bearing

For the predictive appraisal of the perspective exploratory territories as well as prediction of separate producing horizons of prospecting and exploration areas for oil and gas it is necessary to establish the regularities of distribution of already explored deposits of hydrocarbons with structural-tectonic construction, lithological-stratigraphic features, hydrogeological and geothermobaric conditions of oil- and gas-bearing region taken into account. Interconnection between geothermobaric parameters and the phase state of hydrocarbons in the vertical section should be an important factor for the solution of the posed task. Within the limits of the Eastern oil- and gas-bearing area of Ukraine, the spatial zoning is established in the location of gas, oil and gas-condensate deposits. As a whole, the distribution of temperatures and pressures at different depths, average geothermal gradients, gradients of the lithological-stratigraphical horizons of the same name (sustained both as to the area and thickness) are closely connected with the deep geological structure of the studied region (area) and confirm the existing notions of the role of tectonic, lithological-stratigraphic and hydrogeological factors in the formation of the thermal regime of sedimentary basins. Vertical zoning of the distribution of hydrocarbon deposits of oil- and gas-bearing horizons was developed according to geothermobaric parameters of the north-western part of the Dnieper-Donets Depression and 8 areas from 15 ones of the Eastern oil- and gas-bearing region, namely: Monastyryshche-Sofiivka and Talalaivka-Rybalske oil- and gas-bearing areas, Glynsk-Solokha gas- and oil-bearing area, Ryabukhyne-Northern Golubivka and Mashivka-Shebelynka gas-bearing areas, Rudenky-Proletarske oil- and gas-bearing region, Krasna Rika gas-bearing area and also oil- and gas-bearing area of the Northern edge. Revealed regularities of the distribution of formation temperatures, pressures, geothermal and thermobaric coefficients with peculiarities of the tectonic structure of the Dnieper-Donets graben taken into account will make it possible to solve theoretical problems connected with hydrocarbon migration, the formation and preservation of deposits in more well-founded way that will make it possible to conduct prospecting for new fields at great depths within the studied territory more effectively.

scholarly journals An in-depth study of the crystalline basement of sedimentary basins is a dictate of the time

Georesursy ◽  
2019 ◽  
Vol 21 (4) ◽  
pp. 55-62
Author(s):  
Renat Kh. Muslimov
Keyword(s):  
Oil Recovery ◽  
Sedimentary Cover ◽  
Material Balance ◽  
Sedimentary Basins ◽  
Crystalline Basement ◽  
Stage Of Development ◽  
The Earth ◽  
Depth Study ◽  
The Republic ◽  
Deep Source

The history of studying the crystalline basement in the Republic of Tatarstan, the state of implementation of the super-deep drilling program is given. The scientific substantiation of the replenishment of exploited oil and oil-gas fields is provided by feeding them with deep hydrocarbons through oil supply channels connecting the deep source of hydrocarbons with sedimentary cover deposits. The crystalline basement is of interest for the search for hydrocarbon deposits, but its role as a transit for replenishing deposits of hydrocarbon sedimentary cover in the process of constant degassing of the Earth is more attractive and justified. To use these processes, a fundamentally new approach to the construction of geological and hydrodynamic models of oil fields is proposed, taking into account the fundamental principles of geological science on the formation and reformation of oil deposits and the deep processes of Earth degassing. Prospects are substantiated for the development of “old” fields that are in long-term development, for the calculation of oil recovery factor taking into account oil entering the reservoir from the depths of the Earth, the need for adjusting methods for calculating and accounting reserves, changing levels of material balance, and scientific and practical suggestions for accounting when calculating reserves and designing the development of fundamental principles of field geology. Further prospects for the introduction of hydrodynamic development methods and their significant expansion due to the opening of the processes of replenishment of sedimentary basin deposits with deep hydrocarbons and the reformation of deposits at a late stage of development are shown.

scholarly journals RING STRUCTURES IN THE SOUTH TORGAI BASIN AND THE FORECAST FIELDS OF HYDROCARBONS

Neft i gaz ◽  
2020 ◽  
Vol 3-4 (117-1118) ◽  
pp. 54-68
Author(s):  
B.S. ZEYLIK ◽  
◽  
R.T. BARATOV ◽  
Keyword(s):  
Oil And Gas ◽  
New Technology ◽  
Sedimentary Basins ◽  
Wide Distribution ◽  
Earth’S Crust ◽  
The South ◽  
Tension And Compression ◽  
Ring Structures ◽  
Earth's Crust ◽  
Hydrocarbon Deposits

A new technology for forecasting hydrocarbon deposits is proposed, which is based on the principles of shock and explosive tectonics (ShET) and the use of Earth remote sensing data.The shock-explosive tectonics (ShET) paradigm has been advanced in Kazakhstan and developed over 40 years. The new technology is fundamentally different from traditional prognostic constructions due to the indispensable and constant use of the latest space information. Data from scanner, photo and radar space surveys reveal a wide distribution of previously not studied ring and linear structures. A study of ring structures, carried out in Kazakhstan for half a century, indicates a clear predominance of cosmogenic, asteroid-meteorite and cometary structures among them. The data of deciphering satellite images, taking into account the spatial position of known oil and gas fields, make it possible to identify concentric zones of tension and compression of the earth’s crust that accompany cosmogenic ring structures. An analysis of long-term data revealed the confinement of most hydrocarbon deposits and their geological reserves to concentric zones of extensiondeconsolidation of the earth’s crust. Concentric extension zones alternate with the compression zones separating them, in which a small number of mineral deposits are found. The proposed new technology for forecasting hydrocarbon deposits can be applied in many sedimentary basins of the World. Specifically, on the basis of the new technology, a forecast of new hydrocarbon deposits in the South Tоrgai oil and gas basin was based on two cometary ring structures: Chelkar-Aral and Baikonur

scholarly journals The role of water-drive systems of ancient sedimentary basins in the processes of oil and gas accumulation

2020 ◽  
pp. 14-24
Author(s):  
L.A. Abukova ◽  
M.E. Seliverstova ◽  
G.Yu. Isaeva
Keyword(s):  
Organic Matter ◽  
Characteristic Feature ◽  
Oil And Gas ◽  
Sedimentary Basins ◽  
Reservoir Pressure ◽  
Key Factors ◽  
Gas Accumulation ◽  
Drive Systems ◽  
Hydrocarbon Deposits

The article presents the authors’ ideas about the role of post-expulsion water-drive systems in localization of hydrocarbon deposits. It substantiates the key factors of hydrodynamic stagnation, which is a characteristic feature of the large depths of ancient sedimentary basins; it reveals that, within their bounds, in conditions of regional reservoir pressure deficiency the formation of synclinal hydrocarbon deposits is possible, and under ultra-high reservoir pressure – that of zones of oil and gas accumulation of autoclave type, within which the hydrogenation of mixed humus–sapropel organic matter is viable.

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