scholarly journals FEATURES OF THE STRUCTURE AND OIL AND GAS POTENTIAL OF LOWER CRETACEOUS AND UPPER JURASSIC SEDIMENTS IN WESTERN AREAS OF WESTERN SIBERIA

2017 ◽  
pp. 25-34
Author(s):  
G. .. Mukher ◽  
S. F. Kulagina ◽  
A. V. Goryachev ◽  
E. A. Pakhomova ◽  
A. A. Gladyshev
Keyword(s):  
Western Siberia ◽  
Oil And Gas ◽  
Integrated Approach ◽  
Upper Jurassic ◽  
Geological Structure ◽  
Silty Sand ◽  
Reservoir Rocks ◽  
Bazhenov Horizon ◽  
Gas Potential ◽  
Hydrocarbon Deposits

The features of the geological structure and oil and gas potential of the Bazhenov-Abalak oil and gas complex are discussed. Based on new geological and seismic data, using an integrated approach, the zones of distribution and the boundaries of thinning out of silty sand reservoir rocks of Vogulkinskaya strata were mapped, four traps and two zones (Ourinskaya, Eastern Tolumskaya), which are perspective for hydrocarbon deposits search, were distinguished. In Bazhenov horizon, the zones of development of anomalous sections and bituminous sediments were mapped, laying above Bazhenov formation, which are perspective for hydrocarbon deposits search. Recommendations for further exploration are given.

scholarly journals Interpretation of electrical logging data from the Hettangian-Aalenian terrigenous reservoirs in the Southeast of Western Siberia

Georesursy ◽  
2021 ◽  
Vol 23 (4) ◽  
pp. 73-79
Author(s):  
Olga Loktionova ◽  
Lyudmila Kalinina ◽  
Igor Mikhaylov
Keyword(s):  
Western Siberia ◽  
Oil And Gas ◽  
Data Interpretation ◽  
Upper Jurassic ◽  
Lower Jurassic ◽  
Oil And Gas Fields ◽  
Water Saturated ◽  
Gas Fields ◽  
Gas Potential ◽  
Hydrocarbon Deposits

In the southeast of Western Siberia, the most studied are the Upper Jurassic deposits, most of the oil and gas fields being confined to them. However, the probability of discovering new hydrocarbon deposits in the Upper Jurassic horizons is extremely small. Therefore, of great importance is finding new hydrocarbon deposits in less studied deep-lying complexes. The article considers the development of a criterion for determining the saturation type of the terrigenous reservoirs in the Hettangian-Aalenian deposits in the southeast of the West Siberian sedimentary basin. We use the example of the Ust-Tym megadepression, a large depression located in the central part of the Tomsk region. The Lower and Middle Jurassic sections are represented by the Urman and Togur formations, Salat formation (Peshkov formation is its isochronous analogue) and Tyumen formation, and characterized by the alternation of predominantly sandy (potential reservoirs) and argillaceous-carbonaceous (seals) sequences. In the studied interval, tests were carried out in just a few wells, for which reason the identification of deposits and promising objects is complicated. Determining the type of reservoir saturation will significantly improve the assessment of oil and gas potential. As a result of interpreting lateral logging sounding data, the geoelectric parameters of the invasion zone and undisturbed formation were reconstructed for the Lower Jurassic and Aalenian deposits. Based on the well logging data interpretation by means of numerical inversion, we obtained the criterion for the saturation type of the reservoirs (Ju11-17) in the Hettangian-Aalenian complex. The boundary resistivity values for the oil-saturated reservoirs vary from 8 to 20 ohm∙m, while for the water-saturated ones they do not exceed 5 ohm∙m.

scholarly journals THE MODEL OF FOLDING PROCESS AND BREACHES FORMATION IN BORISLAV-POKUTTIA ZONE OF THE PRECARPATHIAN DEFLECTION

2019 ◽  
pp. 7-16
Author(s):  
H.O. Zhuchenko ◽  
I.R. Mykhailiv ◽  
N.V. Hoptariova ◽  
H.D. Horvanko
Keyword(s):  
Oil And Gas ◽  
Traditional Approach ◽  
Geological Structure ◽  
Reliable Prediction ◽  
Local Structures ◽  
Tectonic Disturbances ◽  
Gas Potential ◽  
Potential Traps ◽  
Quantitative Indicators ◽  
Hydrocarbon Deposits

The topicality of the research is determined by the detailed study of the peculiarities of the geological structure of Boryslav-Pokuttia zone of the Precarpathian deflection, in particular of local structural forms as probable traps for oil and gas, for reliable prediction of the oil and gas potential of the subsoil. Boryslav-Pokuttia zone of the Precarpathian deflection refers to one of the oldest oil and gas producing regions in Ukraine. Its hydrocarbon potential is far from being exhausted. The complex block structure of Boryslav-Pokuttia zone requires the development of specific methods for conducting oil and gas prospecting. In this regard, determining the distribution nature of the local structures and specifying the peculiarities of their morphological forms in the area under investigation are of great importance. The issue of tracing tectonic disturbances and determining their screening ability which determines the possible existence of hydrocarbon deposits remains to be an urgent matter. Solving these issues will significantly improve the geological efficiency of prospecting and exploration in the areas of Boryslav-Pokuttia zone. At the modern stage of the Earth sciences development computer processing of geological data is widely used.Therefore, along with the traditional approach to describing structures as potential traps for oil and gas, it isnecessary to analyze their quantitative (numerical) parameters. It gives a possibility to confirm the stablished regularities more reasonably. Handling large array of quantitative indicators of local structures and the dependencies established among them makes it possible to simulate the processes that formed them and to determine the regularities of their distribution. The most important scientific and practical results include: the quantitative indicators ranking of the local structures of Boryslav-Pokuttia zone (the ranking contains four groups of structures classified according to their morphological texture); the investigated conditions for the formation of morphological varieties of local structures and the character of the distribution of tectonic deformations in them. The results of geological and mathematical simulation according to a complex of quantitative indicators help to state that local structures with certain morphological features, which are revealed to various extent in their deformations, are formed by tectonic movements of different magnitude and direction and are described by the numerical parameters peculiar only to them. Investigating the distribution of tectonic stresses and deformations, which can be estimated in quantitative indicators, will contribute to a more reliable prediction of the oil and gas potential of the subsoil. In its turn, it will improve significantly the geological performance of oil and gas prospecting in the areas of BoryslavPokuttia zone of the Precarpathian deflection.

Geological and Field Feasibility Study of Field Development Management Using Marker-Based Production Profiling Surveillance in Horizontal Wells: The Case Study of the Yuzhno-Vyintoiskoye Field

2021 ◽  
Author(s):  
Marat Rafailevich Dulkarnaev ◽  
Yuri Alexeyevich Kotenev ◽  
Shamil Khanifovich Sultanov ◽  
Alexander Viacheslavovich Chibisov ◽  
Daria Yurievna Chudinova ◽  
...  
Keyword(s):  
Oil Recovery ◽  
Oil And Gas ◽  
Water Saturation ◽  
Clay Content ◽  
Horizontal Wells ◽  
Integrated Approach ◽  
Geological Structure ◽  
Gas Field ◽  
Field Development ◽  
Reservoir Rocks

In pursuit of efficient oil and gas field development, including hard-to-recover reserves, the key objective is to develop and provide the rationale for oil recovery improvement recommendations. This paper presents the results of the use of the workflow process for optimized field development at two field clusters of the Yuzhno-Vyintoiskoye field using geological and reservoir modelling and dynamic marker-based flow production surveillance in producing horizontal wells. The target reservoir of the Yuzhno-Vyntoiskoye deposit is represented by a series of wedge-shaped Neocomian sandstones. Sand bodies typically have a complex geological structure, lateral continuity and a complex distribution of reservoir rocks. Reservoir beds are characterised by low thickness and permeability. The pay zone of the section is a highly heterogeneous formation, which is manifested through vertical variability of the lithological type of reservoir rocks, lithological substitutions, and the high clay content of reservoirs. The target reservoir of the Yuzhno-Vyintoiskoye field is marked by an extensive water-oil zone with highly variable water saturation. According to paleogeographic data, the reservoir was formed in shallow marine settings. Sand deposits are represented by regressive cyclites that are typical for the progressing coastal shallow water (Dulkarnaev et al., 2020). Currently, the reservoir is in production increase cycle. That is why an integrated approach is used in this work to provide a further rationale and creation of the starting points of the reservoir pressure maintenance system impact at new drilling fields to improve oil recovery and secure sustainable oil production and the reserve development rate under high uncertainty.

GEOLOGICAL STRUCTURE AND OIL AND GAS POTENTIAL OF THE PRE-JURASSIC DEPOSITS OF THECENTRAL PART OF THE WEST SIBERIAN PLATE

2017 ◽  
pp. 58-66 ◽  
Author(s):  
A. B. Tugareva ◽  
G. A. Chernova ◽  
N. P. Yakovleva ◽  
M. L. Moroz
Keyword(s):  
Oil And Gas ◽  
Geological Structure ◽  
The West ◽  
Reservoir Rocks ◽  
Gas Accumulation ◽  
Basement Rocks ◽  
Middle Paleozoic ◽  
Gas Potential ◽  
Gas Bearing

In the presented work the features of the geological structure and oil and gas potential of the pre-Jurassic basement rocks are discussed. In the sediments of the oil and gas bearing horizon of zone of contact five types of reservoir rocks are distinguished. The greatest prospects for oil and gas potential are associated with the carbonate depositions of the Middle Paleozoic and effusive of the medium-acidic composition of the Permian-Triassic and Triassic age. From these deposits in the territory of the district the maximum oil inflows were received. 15 promising zones of oil and gas accumulation in the deposits of the oil and gas bearing horizon of zone of contact were distinguished, three of which are poorly studied by drilling and one zone (Predeniseyskaya) is in the Paleozoic oil and gas complex.

scholarly journals Development of the integrated approach for stratigraphic dissolution and correlation of Middle–Upper Jurassic disturbances of south-east of western Siberia

2019 ◽  
Vol 27 (3) ◽  
pp. 24-39
Author(s):  
I. V. Rychkova ◽  
M. I. Shaminova ◽  
V. V. Anosov ◽  
V. P. Ivanov
Keyword(s):  
Western Siberia ◽  
Integrated Approach ◽  
Upper Jurassic ◽  
Organic Mass ◽  
Ir Spectrometry ◽  
Tomsk Region ◽  
The Difference ◽  
Effective Development ◽  
Hydrocarbon Deposits ◽  
Reliable Correlation

Based on complex paleobotanical, lithogeochemical, IR spectrometry and thermochemical studies, stratigraphic dismemberment and correlation of productive Middle–Upper Jurassic sediments, represented by Tyumen and Naunak formations in the Dvojnaya and Snezhnaya areas, in the southeast of Western Siberia (the central part of the Tomsk Region) were carried out. A reliable basis has been created for an optimal correction of the calculation of reserves and effective development of hydrocarbon deposits. It is established that for the Tyumen formation the leading paleobotanical remains are the ferns of Coniopteris vialovae, Raphaelia diamensis and Czekanowski czekanowskia irkutensis, Cz. rigida, Phoenicopsis mogutchevae, and for the Naunak formation – Czekanowski czekanowskia tomskiensis. This is due to the paleoclimatic situation, which predetermined the composition of the plant community and the types of plant-coal-forming plants. For reliable correlation, a lithogeochemical study of sediments was carried out, taking into account the analysis of the origin of the coal. The difference in the composition of plant complexes in the suites was confirmed by the difference in the genetic properties of the marking coal-bearing deposits: the degree of biochemical stability of the organic mass of the peat, the level of gelification and the floral regeneration of the organic mass of the coals, and also the yields of light and heavy hydrocarbons.

scholarly journals PREDICTION OF PARAMETERS FOR COMMERCIAL OIL-AND-GAS CONTENT ZONES OF JURASSIC SEDIMENTS IN THE NORTH OF WESTERN SIBERIA

2019 ◽  
pp. 9-15
Author(s):  
Ya. I. Gladysheva
Keyword(s):  
Western Siberia ◽  
Oil And Gas ◽  
Upper Jurassic ◽  
Geological Structure ◽  
Lower Jurassic ◽  
Gas Content ◽  
Seismic Survey ◽  
The North ◽  
Industrial Productivity ◽  
Commercial Oil

Discovered hydrocarbon deposits in a number of fields are the characteristic of the industrial productivity of Jurassic sediments in the north of Western Siberia. Most of the deposits are in the Middle Jurassic sediments, the signs of hydrocarbons have been obtained in the Lower Jurassic sediments, single deposits have been obtained in the Upper Jurassic sediments. This uneven distribution of deposits in the Jurassic oil and gas bearing facility is associated with the complexity of its structure. Therefore, there is a need to conduct a comprehensive analysis of the geological structure of Jurassic sediments, to identify geological parameters to predict commercial oiland-gas content zones in the investigated territory.Based on the results of the study of deep drilling data, seismic survey in the north of Western Siberia, schematic maps of the depth zones of Jurassic sediments have been constructed, the author of the article determines the parameters of industrial productivity zones. The most significant parameter is abnormally high formation pressure. Based on the conducted researches, the author notes the prospective commercial oil-and-gas content zones for Jurassic sediments within NadymPur watershed.

The geosolitonic concept of high output hydrocarbon deposits formation

2021 ◽  
pp. 13-22
Author(s):  
R. M. Bembel ◽  
S. R. Bembel ◽  
M. I. Zaboeva ◽  
E. E. Levitina
Keyword(s):  
Western Siberia ◽  
Oil And Gas ◽  
Chemical Elements ◽  
Seismic Exploration ◽  
Oil And Gas Fields ◽  
Recoverable Reserves ◽  
Production Wells ◽  
Cumulative Production ◽  
Gas Fields ◽  
Hydrocarbon Deposits

Based on the well-known results of studies of the ether-geosoliton concept of the growing Earth, the article presents the conclusions that made it possible to propose a model of thermonuclear synthesis of chemical elements that form renewable reserves of developed oil and gas fields. It was revealed that local zones of abnormally high production rates of production wells and, accordingly, large cumulative production at developed fields in Western Siberia are due to the restoration of recoverable reserves due to geosoliton degassing. Therefore, when interpreting the results of geological and geophysical studies, it is necessary to pay attention to the identified geosoliton degassing channels, since in the works of R. M. Bembel and others found that they contributed to the formation of a number of hydrocarbon deposits in Western Siberia. When interpreting the results of geological-geophysical and physicochemical studies of the fields being developed, it is recommended to study the data of the ring high-resolution seismic exploration technology in order to identify unique areas of renewable reserves, which can significantly increase the component yield of hydrocarbon deposits.

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