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Khanty-Mansi Autonomous Okrug
The conceptual sedimentation model is important in the study of region geology. Working with actual geological and geophysical data, a specialist transforms abstract models taking into account the most probable scenario for the development of geological processes at a certain point in time within a specific study area. Adding a time factor to the model can significantly increase its informativeness. For example, a conceptual model can be represented through a description of the sequence of processes in their relationship within the formation of one or more clinocyclites and their sequential visualization in the style of "freeze frame" or the so-called "slicing" of frames. This option can be considered as one of the possibilities of approaching the dynamic model. Dynamic sedimentation modeling significantly contributes to the creation of dynamic conceptual models; it allows directly observe simulated geological events step by step. The article presents a new approach, which involves the creation of a conceptual sedimentological model based on core study, well logging and seismic data, and considers the results of sedimentation modeling, on the example of one of the clinocyclites of the Neocomian clinoform complex. The use of sedimentation modeling in support of the conceptual model development for the layers of the Pym clinocyclite at one of the sites in the Khanty-Mansiysk autonomous district made it possible to highlight a number of features in the slope formation processes, to clarify the direction of sedimentary material movement to the foot of the slope, considering the hypsometry of the paleosurface, and further into the deep-water zone, to localize sedimentation depots.
- Europe (0.71)
- Asia > Russia > Ural Federal District > Tyumen Oblast > Khanty-Mansi Autonomous Okrug > Khanty-Mansiysk (0.24)
- Geology > Sedimentary Geology (1.00)
- Geology > Geological Subdiscipline > Stratigraphy (0.91)
- Europe > Russia > Barents Sea > Sørvestsnaget Basin (0.99)
- Europe > Norway > Barents Sea > Sørvestsnaget Basin (0.99)
The article considers oil reserves conversion and analysis of the change reasons. Reserves listed in the State Budget of the Russian Federation and reserves according to the modern concept at the present exploration degree are analyzed. On the examples of the Volga-Urals and Khanty-Mansiysk autonomous district the methods for analyzing the formalized characteristics of deposits structure complexity are given as indicators of reserves conversion over time. These indicators should be taken into account when planning follow-up fields exploration. The numerical characteristics associated with the structural factor and lithological-physical properties are discussed. The analysis of the results showed that in the early stages of deposits exploration there is a significant need for accurate characteristics of seismic data and structural maps. Further drilling of deposits proves that the absence of such characteristics when mapping deposits of small height subsequently leads to significant changes in reserves. The presence of error maps for the geometrization of structural surfaces for different calculations would make it possible to optimally estimate the volume of an oil-saturated reservoir and categorize reserves. Discontinuous formations also make a large contribution to reserves estimation errors. As a criterion for the significance of lithological variability in the change in reserves, the reservoir boundary density parameter is used, that is, the ratio of the perimeter of all reservoir-non-reservoir boundaries within the deposit to the area. It shown that, despite the long history of studying and developing hydrocarbon deposits, it is almost always possible, using certain methods of numerically formalized methods of analysis, to obtain a rationale for identifying underexplored reserves or new understanding of the reserves structure and a quality assessment of different structural elements.
In the process of hydrocarbon production, all components of natural media are exposed: atmospheric air, soil-vegetation cover, surface waters, including bottom deposits. Under the conditions of medium acquisition with its high wetlastivity and climbing, it is the greamp-lake ecosystems that are most vulnerable in the process of human activity. This fully applies to the territory of the Vostochno-Mytaiahinskoye oil field developed since 2009. In the landscaped structure of this field, the lake-marsh complexes occupy 77 % of the territory. In the process of oil and gas production, the impact is accompanied by a change in the appearance of landscapes and the initial geochemical environment. On some components of nature (soil and vegetable cover), the impact is limited by construction sites, on the other (water medium) it is somewhat larger due to the characteristics of the natural component. Therefore, careful attitude towards the environment is the basic principle of sustainable development of Surgutneftegas PJSC. In all areas of subsoil subsoil, research is conducted to determine the environmental impact through environmental monitoring. The research results include the definition of both the background and current state, which makes it possible to determine the degree and consequences of the effects of oil and gas production on the environment. The analysis of the current state of natural media of the territory of the Vostochno-Mytakhinskoye field made it possible to establish, the presence of biogenous substances, some heavy metals and other chemicals, the content of which in certain periods exceeds the established standards of maximum permissible concentrations. This is characteristic not only for this field, but also for other deposits in the Khanty-Mansiysk autonomous district - Yugra and other regions of Russia, where hydrocarbon production is not conducted. This is due to the natural features of the terrain and processes flowing in the depths of the Earth.
The extraction of hydrocarbons and their transportation from the fields is accompanied by the impact on all components of the natural environment. This impact is manifested both in a change in the external appearance of the surrounding landscapes and in the initial geochemical setting. At the same time, the strength of the impact and its consequences largely depend on the natural features of the area. The Middle Ob region, where most of the hydrocarbons of Surgutneftegas PJSC are produced, is characterized by a high degree of swampiness and lagging (more than 50%). However, within this territory there is an even lower and humid place, where the proportion of wetlands exceeds 80 and even 90%. This area was called the Surgut lowland, or Surgut marshlands. In such extremely difficult conditions there are many developed objects, including the Konitlor group of fields. The extraction of hydrocarbons in the swampy and lakeside areas places higher demands on the subsoil user to prevent environmental pollution. Owing to the observance of industrial and environmental safety requirements, competent organization of production, applied environmental protection measures, in the Konitlor group of fields, despite the emergencies, made it possible to prevent environmental pollution. This is confirmed not only by the company's monitoring studies, but also by remote sensing of the territory of the Khanty-Mansiysk Autonomous District - Yugra, which is carried out by the Department of Subsoil Use and Natural Resources of the autonomous district. At the same time, the most effective tool that can be used to assess the current state of natural environments and to determine the consequences of the impact of oil and gas production on the environment are monitoring studies. In Surgutneftegas PJSC, they are carried out at all fields and subsoil areas in accordance with the license agreement on the terms of subsoil use.
Improving the accuracy of seismic prediction of the effective thicknesses of the Ju2 formation of the Tyumen suite on the example of the fields of the Tortasinsky block (Russian)
Gaifulina, E. F. (Tyumen Petroleum Research Center) | Nadezhnitsskaya, N. V. (Tyumen Petroleum Research Center) | Kapustina, Yu. S. (Tyumen Petroleum Research Center) | Dariy, S. D. (Sorovskneft LLC) | Meleshkevich, E. V. (Rosneft Oil Company) | Melnikov, R. S. (Rosneft Oil Company)
The main purpose of geologists and geophysicists work is creation of a reliable consistent geological model of a target area. At the same time, one of the main problems is the reliability of seismic predictions of reservoir parameters in complex reservoirs. The article discusses the features of predicting effective thicknesses from seismic data for the deposits of the Ju2 formation of the Tyumen suite in case of the group of fields in the Tortasinsky block. The upper part of Tyumen suite is productive almost for all deposits of Khanty-Mansiysk Autonomous District. Deposits of Ju2 strata were formed in transitional depositional environment of a coastal plain. Distinguishing features of Middle Jurassic deposits are: laterally poorly continuous shale barriers, high heterogeneity, low thickness of sandy-silty layers (close to seismic resolution), laterally abrupt sandstone facies replacement with mudstone and siltstone, presence of carbon-bearing interlayers - all of these form a complex structure of a predicted interval. Therefore, facies analysis is one of the most important tools for oil and gas reservoir study. The use of multi-scale geological and geophysical information including 3D seismic data enable interpreters to perform lateral wave pattern variation analysis and based on it identify the main facies, specified their internal structure and formation features. Based on results obtained by specialists of Tyumen Petroleum Research Center (subsidiary of Rosneft Oil Company), Sorovskneft and Rosneft it is shown that dividing of a study area into facies zones gives opportunity to improve prediction accuracy of effective thickness based on seismic attributes. The outcome of this work allow to specify hydrocarbon prospects of Ju2 strata deposits of Tyumen suite in Tortasinsky license areas of Rosneft Oil Company.
- Asia > Russia > Ural Federal District > Tyumen Oblast > Tyumen (1.00)
- Asia > Russia > Ural Federal District > Tyumen Oblast > Khanty-Mansi Autonomous Okrug > Khanty-Mansiysk (0.25)
- Energy > Oil & Gas > Upstream (1.00)
- Government > Regional Government > Europe Government > Russia Government (0.68)
- Government > Regional Government > Asia Government > Russia Government (0.68)
- Asia > Middle East > Kuwait > Jahra Governorate > Arabian Basin > Widyan Basin > North Kuwait Jurassic (NKJ) Fields > Marrat Formation > Upper Marrat Formation (0.98)
- Asia > Middle East > Kuwait > Jahra Governorate > Arabian Basin > Widyan Basin > North Kuwait Jurassic (NKJ) Fields > Marrat Formation > Sargelu Formation (0.98)
The nature of the formation and conditions of occurrence of gas-condensate deposits in the Achimov reservoirs of the Yuzhno-Venikhyartskoye field (Russian)
Elisheva, O. V. (Tyumen Petroleum Research Center LLC) | Lazar, E. L. (Tyumen Petroleum Research Center LLC) | Safonov, V. G. (Tyumen Petroleum Research Center LLC) | Kulik, A. P. (RN-Uvatneftegas) | Zhestkov, D. N. (Rosneft Oil Company)
Rosneft Oil Company focuses on research work at the West Siberian basin. The territories are characterized by a low hydrocarbon potential, but they are of interest to the company in the future. Such territories include the peripheral regions of the basin, where the main problem for the Jurassic reservoirs is the forecast of their phase saturation. This problem does not allow the company to actively invest in prospecting and exploration work in such areas. In order that, Rosneft Oil Company to be able to increase the company's hydrocarbon resource base by opening new hydrocarbon deposits in the peripheral regions of the West Siberian basin, it is necessary to understand the mechanism of formation of deposits of different phase composition. For example, small Yuzhno-Venikhyartskoye gas-condensate field was discovered in 2014 on the border of the northern districts of the Uvat region and Khanty-Mansiysk autonomous district. The phase composition of hydrocarbons is uncharacteristic for territories where oil deposits are usually discovered. The article considers the results of the studying the nature of the formation of gas-condensates in the peripheral territories of West Siberian basin on the example of Yuzhno-Venikhyartskoye gas-condensate field. The authors briefly describe geological, geodynamic, geochemical, thermobaric and tectonic conditions that are necessary for the formation and existence of gas-condensate deposits at depths of up to 2 km in the peripheral territories of the West Siberian basin. There is no doubt that understanding the formation mechanism of gas-condensate deposits in the peripheral territories of sedimentary basins will allow the company to expand its prospects for prospecting not only in the northern part of the Uvat region, but also in the southern regions of the Khanty-Mansiysk autonomous district.
- Asia > Russia > Ural Federal District > Yamalo-Nenets Autonomous Okrug > Purovsky District (0.85)
- Asia > Russia > Ural Federal District > Tyumen Oblast > Khanty-Mansi Autonomous Okrug > Khanty-Mansiysk (0.44)
- Energy > Oil & Gas > Upstream (1.00)
- Government > Regional Government > Europe Government > Russia Government (0.46)
- Government > Regional Government > Asia Government > Russia Government (0.46)
- Asia > Middle East > Kuwait > Jahra Governorate > Arabian Basin > Widyan Basin > North Kuwait Jurassic (NKJ) Fields > Marrat Formation > Upper Marrat Formation (0.98)
- Asia > Middle East > Kuwait > Jahra Governorate > Arabian Basin > Widyan Basin > North Kuwait Jurassic (NKJ) Fields > Marrat Formation > Sargelu Formation (0.98)
- Asia > Russia > Ural Federal District > Yamalo-Nenets Autonomous Okrug > Purovsky District > West Siberian Basin > Nadym-Pur-Taz Basin > Achimov Formation (0.97)
The process of oil production is accompanied by the impact on all components of natural environments: atmospheric air, soil and vegetation cover, surface waters, including bottom sediments. In the conditions of the Middle Ob region, with its high degree of swampiness and lakes, it is the bog-lacustrine ecosystems that are the most vulnerable in the course of human economic activity. This also applies to the territory of the Lyantorskoye oil and gas condensate field, developed since 1978, in the landscape structure of which lake-bog complexes occupy almost 80% of the territory. At long-term developed fields, primarily those whose exploitation began in the Soviet period, background observations of the state of natural environments, including surface water and bottom sediments, were not carried out. This gap was filled only in the post-Soviet period, and at the beginning of the 21st century, hydrochemical studies became regular with the determination of a large number of pollutants. The Lyantorskoye field, like other long-term developed fields, is also covered by annual hydrochemical studies with a large number of determined components in 10 watercourses. The results of these studies are presented in the article. As a result of the analysis of the current state of the surface waters of the Lyantorskoye field, it was established that the presence of phenols, biogenic substances, heavy metals and other chemical substances in the surface waters, the content of which exceeds the established maximum permissible concentrations. This is typical not only for the rivers of this field, but also for other watercourses in the territory of the Khanty-Mansiysk Autonomous District - Yugra, where hydrocarbon production is not carried out. The noted is associated with the natural features of the area and the processes taking place in the bowels of the earth. Analysis of the research results indicates that the long-term operation of the Lyantorskoye field did not have a visible effect on the hydrochemical state of surface waters and bottom sediments of the field's streams. The increased content of some pollutants is caused not only by technogenic factors, but by the natural features of the taiga zone of Western Siberia.
- Asia > Russia > Ural Federal District > Khanty-Mansi Autonomous Okrug (1.00)
- Asia > Russia > Ural Federal District > Tyumen Oblast > Khanty-Mansi Autonomous Okrug > Khanty-Mansiysk (0.25)
At the facilities of the oil and gas industry, underground water intakes are used for drinking, household, fire-fighting water supply, as well as for providing reservoir pressure maintenance systems, especially in the conditions of the Far North, when the use of surface water sources is difficult. According to statistical data, over the 10 years of operation, the flow rate decreases several times as a result of physical, chemical and biological colmatage. To solve this problem, a technology of high-pressure wave intensification of well flow rates in depression conditions has been developed, which ensures the removal of the products of aquifer dissociation at the wellhead, sparing cleaning of the filter zone, the sump and the entire wellbore. From the point of view of ensuring energy efficiency, the technology of low-pressure wave intensification of well flows, for shallow wells, is proposed due to the realized developed cavitation outflow and its accompanying secondary effects. When performing the work, probabilistic and statistical methods of processing the initial field information and experimental methods for studying the effect of vibration with different amplitude-frequency characteristics on rocks were used. Numerical simulation of turbulent submerged jets was performed using the STAR-CCM+ software package (CFD modeling). The optimal design parameters of axisymmetric cavitation generators of various designs were determined. The results provide satisfactory convergence with the experimental data. The novelty and uniqueness of the developed technological solutions is confirmed by the patents of the Russian Federation for inventions. Practical testing was carried out on more than 500 wells for drinking, economic and fire-fighting purposes in the Krasnodar, Stavropol and Perm territories, Rostov, Astrakhan, Saratov regions, Khanty-Mansiysk Yamalo-Nenets autonomous districts, and other regions of the Russian Federation. The success rate of treatments exceeds 95%, the minimum increase in the flow rate after treatments is 30-50%, the maximum recorded is 7800%. The effect is long-term.
- Europe > Russia > Volga Federal District > Saratov Oblast > Saratov (0.24)
- Europe > Russia > Southern Federal District > Krasnodar Krai > Krasnodar (0.24)
- Europe > Russia > North Caucasian Federal District > Stavropol Krai > Stavropol (0.24)
- Asia > Russia > Ural Federal District > Tyumen Oblast > Khanty-Mansi Autonomous Okrug > Khanty-Mansiysk (0.24)
- Europe > Russia > Volga Federal District > Perm Krai > Volga Urals Basin > Pavlovskoye Field (0.89)
- Europe > Russia > North Caucasian Federal District > Stavropol Krai > Middle Caspian Basin > Stavropolskoye Field (0.89)
- Asia > Russia > Ural Federal District > Khanty-Mansi Autonomous Okrug > West Siberian Basin > Krasnodar Field (0.89)
Gazprom Neft will develop its Meretoyakhaneftegaz project in Russia independently after Shell pulled out of a planned joint venture (JV) citing the negative impact of external factors. Gazprom Neft said the assets being developed are within the perimeter of the JV at the Meretoyakhinskoye field, Tazovsky, Severo-Samburgsky, and two West Jubilee sites in the Yamalo-Nenets Autonomous Area in accordance with a previously approved work plan. Operations are expected to start before the end of 2020 with industrial development of the Tazovsky field. Gazprom Neft and Shell remain involved with the Salym Petroleum Development (SPD) JV, which closed a deal in March to expand activity developing the Salym group of fields in Russia's Khanty-Mansi Autonomous Okrug. The deal includes a new license for the right to geological exploration, and exploration and production of traditional hydrocarbon reserves at the Salymsky-2 site in the Khanty-Mansi area.
- Asia > Russia > Ural Federal District > Khanty-Mansi Autonomous Okrug (0.62)
- Asia > Russia > Ural Federal District > Tyumen Oblast > Khanty-Mansi Autonomous Okrug (0.29)
- Asia > Russia > Ural Federal District > Khanty-Mansi Autonomous Okrug > West Siberian Basin > Central Basin > Salym Field > Verkhne Salymskoye Field > Vadelypskoye Field > Zapadno Salymskoyeskoye Field (0.99)
- Asia > Russia > Ural Federal District > Khanty-Mansi Autonomous Okrug > West Siberian Basin > Central Basin > Salym Field > Verkhne Salymskoye Field > Salymskoye Field > Zapadno Salymskoyeskoye Field (0.99)
- Asia > Russia > Ural Federal District > Khanty-Mansi Autonomous Okrug > West Siberian Basin > Central Basin > Salym Field > Salymskoye Field > Vadelypskoye Field > Zapadno Salymskoyeskoye Field (0.99)
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Hydrochemical condition of water courses and reservoir within the territory of Yugansk group of licensed sites of Surgutneftegas PJSC in Nefteyugansk region of Khanty-Mansiysk autonomous district – Yugra (Russian)
Solodovnikov, A. Yu. (Tyumen Branch of SurgutNIPIneft, Surgutneftegas PJSC) | Soromotin, A. M. (Tyumen Branch of SurgutNIPIneft, Surgutneftegas PJSC)
The area of Surgutneftegas activity for a long time was limited to the right bank of the Middle Ob River. Over a 50-year period of oil and gas production, hydrocarbon reserves have declined significantly. To maintain the current level of oil production, the company is doing a lot of work to replenish the resource base, including exploration in new territories. Among these territories is the south of the Nefteyugansk region of the Khanty-Mansiysk autonomous district - Yugra. Currently, the Nefteyugansk region in terms of density of licensed sites ranks first in the Khanty-Mansiysk autonomous district - Yugra. For a long time, the south and southeast of the region remained poorly studied, but licenses for the search and exploration of hydrocarbons were also issued to this territory. At several licensed sites, exploration work is carried out by Surgutneftegas. Moreover, the environmental impact is even at the stage of exploration. It can be accompanied by a change in the appearance of landscapes and the initial geochemical environment of natural environments. On some components of nature (soil and vegetation cover), the effect is point-like and is limited to construction sites, on others (aquatic environment) it is somewhat larger due to the nature of the natural component. When working in licensed areas, in accordance with the licensing agreement on the conditions for the use of subsoil, Surgutneftegas PJSC conducts studies to determine the environmental impact through environmental monitoring of natural environments. The research results include the determination of both the background state and the current one, which allows determining the degree and consequences of the impact of oil and gas production on the environment.