Nature, climate and minerals. Natural features and resources of the Khanty-Mansi Autonomous Okrug - Yugra Reserves of solid minerals

18.10.2019

The Khanty-Mansi Autonomous Okrug is part of the Ural Federal District(UFO) of the Russian Federation (RF)

Territory: 534.8 thousand sq. km

Population: 1350.3 thousand people

Administrative center -Khanty-Mansiysk

Director of the Oil and Gas Department -Panov Veniamin Fedorovich

Head of the Territorial Administration for Subsoil Use of KhMAO – Rudin Valery Pavlovich

STATUS AND USE OF THE MINERAL AND RAW MATERIAL BASE OF KHMAO.

Khanty-Mansi Autonomous Okrug

W animates central part West Siberian platform with pre-Jurassic folded basement and Jurassic-Cenozoic sedimentary cover. In the extreme west, the folded structures of the Urals are developed, composed of Archean, Proterozoic and Paleozoic formations. The bowels of the district are rich in many types of combustible, metallic, non-metallic minerals, groundwater.

Hydrocarbon raw materials.

The Okrug is a strategic base for oil production in the Russian Federation. Prospective resources make up about 18% of the total Russian resources, forecast resources 47.0%. In terms of explored reserves, the Khanty-Mansi Autonomous Okrug far exceeds all other regions of the Russian Federation. The exploration of the initial total resources is 46.1%.

In total, 504 hydrocarbon deposits have been explored in the district, including 429 oil, 18 oil and gas condensate, 20 gas, 33 gas and oil, 4 gas condensate. The largest of them are the Samotlor, Krasnoleninskoye, Priobskoye, Salymskoye, Vateganskoye, Fedorovskoye, Tyanskoye deposits.

In the structure of initial potential oil resources, current explored reserves (categories A+B+C1) and cumulative production account for 45.1%, estimated reserves (C2) – 10%, prospective resources (C3+D1L) – 6.1%, forecast resources (D1+D2) – 37.8%. Exploited deposits account for 91% of current explored and 62% of estimated reserves. 237 hydrocarbon fields were put into operation. There are 487 license areas in the distributed fund.

In the sedimentary cover of the WSP, 7 oil and gas bearing complexes (OGC) are distinguished: Cenomanian, Aptian, Neocomian, Achimov, Bazhenov, Upper Jurassic and Lower Middle Jurassic, separated by regional seals; Paleozoic formations stand out as a separate oil and gas complex.

The initial total geological resources of oil in the oil and gas complex are distributed as follows: Neocomian - 49%, Lower Middle Jurassic - 19%, Bazhenov - 8%, Upper Jurassic (Vasyugan) - 8%, Achimov - 7%, Paleozoic - 5%, Aptian - 3%, Cenomanian - one%. According to the phase state, NSR are distributed as follows: oil - 88%, gas - 6.5%, condensate - 5.5%.

In 2005-08 17 oil fields were discovered in the distributed subsoil fund: Purumskoye, Zapadno-Nikolskoye, Ostapenkovskoye, Molodezhnoye, Yuzhno-Lykhminskoye (oil and gas), Zapadno-Novomostovskoye, Yuzhno-Valovoe, Podemnoye, Severo-Pokamasovskoye, Lugovoe, Vostochno-Golevoye, Ostrovnoye, Severo- Molodezhnoye, Bobrovskoye, Severo-Moimskoye, Zapadno-Tukanskoye, Koimsapskoye.

Despite the fact that Khanty-Mansi Autonomous Okrug is the main oil production base in the Russian Federation, which accounts for 57%, the prepared resource base does not provide the required production levels. To date, giant hydrocarbon deposits (>3000 mln.<10млн.т) на 15%.

In order to discover new deposits of hydrocarbon raw materials, a search program is being implemented in the Okrug. As part of its implementation, the territory of the unallocated subsoil fund is divided into 8 exploration zones: Preduralskaya, Yuilskaya, Serginskaya, Berezovskaya, Karabashskaya, Yuganskaya, Koltogorskaya, Vostochnaya. Each of the zones is divided into sections where subsoil users carry out prospecting work in order to detect hydrocarbon deposits.

Solid minerals.

Deposits of quartz, brown coal, ore and placer gold, zeolites, rare metals, glass sand, bentonite clays, building stone, siliceous raw materials, brick and expanded clay, building sand, sand and gravel material have been explored on the territory of the district.

In total, there are 5 quartz deposits, 7 alluvial gold deposits and 1 zeolite deposit in the distributed subsoil fund.

Coal.

Six deposits discovered in the Trans-Ural part of the district are confined to the North-Sosva lignite basin. The largest of them are Lyulinskoe and Otorinskoe. The maximum productivity is characteristic of the Triassic deposits, and is much lower for the Bajocian–Early Callovian deposits. Balance reserves (as of 01.01.2005)

metal fossilsare represented by deposits of primary and alluvial gold, manifestations of iron, chromites of copper, zinc, manganese, bauxite, titanium, zirconium.

Black metals.

Resources iron ores P3 category is 5845 million tons, chromium ores - 170 million tons, manganese ores - 29 million tons.

Nonferrous metals.

Resources of copper in category P2 are 250, P3 - 3550 thousand tons; resources of zinc in category P2 - 620, P3 - 4550 thousand tons; lead resources - 230 thousand tons. Bauxite resources in category P3 - 152 million tons.

noble metals.

On the territory of the Khanty-Mansiysk autonomous region as of 01.01.2006 12 deposits of alluvial gold 3328 kg in categories С1+С2, 1 deposit of ore gold in the amount of 1.422 tons in categories С1+С2 were taken into account. The estimated and approved predicted resources of ore gold are 128 tons for category Р1+Р2+Р3, placer gold – Р1 – 2 t, Р2 – 5 t, Р3 – 13 t.

rare metals.

Despite the poor study of the territory, in relation to titanium-zirconium, it is possible to identify objects for setting up prospecting and evaluation work in the western part of the district. According to the results of predictive and mineragenic studies when compiling GGK-1000/3 according to sheet P-41, the resources of P3 categories for the Verkhnekondinskaya area were: Ti - 367,764 thousand tons, Zr - 55,337 thousand tons, for the Khugotskaya area 258,271 and 35,337 thousand tons respectively.

non-metallic minerals.

On the territory of the Khanty-Mansiysk Autonomous Okrug as of 01.01.2006. reserves of vein quartz are taken into account - 368 thousand tons, incl. suitable for obtaining high grades of "special pure" quartz. Reserves of vein quartz prepared for open pit processing are about 200,000 tons; Forecast resources in category Р1+Р2+Р3 – 705 thousand tons.

Reserves of zeolites for two fields with unique filtration and sorption properties, they amount to 64.4 thousand tons in categories C1 + C2.

The license issued for the additional exploration of the Ust-Maninskoye bentonite deposit will remove the issue of this type of mineral raw material in the near future. When conducting searches in the areas to the south of the field, additional areas of significant interest as licensed objects may appear.

The western part of the district (the left bank of the Ob) has unique resources of cristobalite-opal rocks (flasks, diatomites, diatom clays). The resources of the Ob opal-bearing zone identified under GGK-1000/3 (sheet R-41), in category R3, amount to 41,963.5 million tons.

An assessment of explored reserves and predicted resources of solid minerals suggests that many of the types can ensure not only the development of a number of industries in the Urals Federal District, but also the supply of raw materials to other regions of the country. This applies to brown coal, cristobalite-opal rocks, optical raw materials, etc., the resources of which are developed in negligible volumes or are not used at all.

Natural resources of Ugra. The territory of the Okrug, along with oil and gas, is rich in other natural resources, both renewable and non-renewable. Some of them are resources of global importance (forest, water), others are national (solid minerals, flora and fauna, peat) and regional.

Reserves of hydrocarbon raw materials. The Khanty-Mansiysk Autonomous Okrug occupies a leading position in the world in terms of hydrocarbon reserves (about 5% of the world's oil reserves). Due to the fact that this raw material will be the main source of energy in the coming years, the role of the district as a territory supplying such raw materials should be maintained throughout this period. Now the Khanty-Mansiysk Autonomous Okrug supplies hydrocarbon raw materials to various regions of the Russian Federation and beyond Russia, mainly to European countries and the CIS countries.

Reserves of solid minerals. The Khanty-Mansiysk Autonomous Okrug has large potential reserves of iron ores, hard and brown coal, bauxites, copper, zinc, lead, tungsten, molybdenum, chromium, barite, manganese, rare metals, and phosphorites. All deposits of solid minerals are suitable for open mining. The presence of such minerals enables the Autonomous Okrug to develop new sectors of the economy, which are so necessary for the industrial potential of the Ural region.

Igneous rocks Formed directly from magma (molten mass of predominantly silicate composition), as a result of its cooling and solidification. Depending on the conditions of solidification, intrusive (deep) and effusive (poured) rocks are distinguished. They are found in the western part of the district in the foothills of the Urals. They include non-ferrous metals, rare metals, polymetallic ores (from "poly ..." and "metals" - complex ores in which the main valuable components are lead and zinc, associated copper, gold, silver, cadmium, sometimes bismuth, tin , indium and gallium.)

Sedimentary rocks The formation of sedimentary material occurs due to the action of various factors - the influence of temperature fluctuations, the impact of the atmosphere, water and organisms on rocks characteristic of the surface part of the earth's crust and formed as a result of redeposition of weathering products and destruction of various rocks, chemical and mechanical precipitation from water, the vital activity of organisms, or all three processes at the same time. They are found throughout the Khanty-Mansiysk Autonomous Okrug (oil, gas, peat, adsorption clays, limestones, sands and gravel)

Oil and natural gas. The main oil and gas bearing regions and the largest oil fields are concentrated in the Okrug. Between the Urals and the Ob-Yenisei watershed there are 294 oil fields with total reserves of over 16 billion tons. To date, more than 9 billion tons have been extracted from the bowels of the district. Oil fields are unevenly distributed. There are about 61 large oil and gas fields in the Okrug.

This presentation is not intended for any commercial use. This presentation is not intended for any commercial use. The graphic and text materials used in the creation of this presentation were obtained from the Internet resources using a search engine and the textbook "Geography of the Khanty-Mansi Autonomous Okrug Grades 8-9" Orlova T.K. and others. The graphic and text materials used to create this presentation were obtained from Internet resources using a search engine and the textbook "Geography of Khanty-Mansiysk Autonomous Okrug Grade 8-9" Orlova T.K. and others.

Field(mineral) - a natural accumulation of a mineral, which, in quantitative and qualitative terms, can be the subject of industrial development in a given state of technology and in given economic conditions (industrial deposit). Other accumulations, which, according to their data, could be developed only under changed technical and economic conditions, belong to non-commercial deposits, differing in this sense from ore occurrences. By the size of stocks, it can be large, medium and small. By origin, endogenous, exogenous and metamorphogenic deposits are distinguished.

Geological body - these are formations of the earth's crust of various shapes, sizes and conditions of occurrence (layers, veins, lenses, stocks, etc.), composed of useful mineral matter or containing it in a scattered form. Several geological bodies are observed in a number of deposits.

Ore occurrence- a natural accumulation in rocks of useful minerals of small or unexplained sizes. Sometimes, as a result of exploration and study, an ore occurrence can be transferred to a deposit.

Ore- this is an aggregate of minerals, from which it is technologically possible and economically feasible to extract a metal or a metal compound by the gross method.

Mineral resource- a natural mineral substance, which is qualitatively and quantitatively suitable for use in the national economy.

Minerals. Minerals can be used either in their natural state (high-quality coal, quartz sand), or after their preliminary processing by sorting, crushing, enrichment (most ores).

Minerals find the most diverse application in various sectors of the national economy. At present, almost any rock of a certain quality and under certain economic conditions can be used for certain purposes, and therefore "useless minerals" almost do not exist. Here, the word "any" refers to rocks related to off-balance ores.

There is a chemical-technological classification of minerals. Its main principle is the material composition of ores and their application.

According to this classification, minerals are divided into metallic, non-metallic and combustible.

Minerals, their diversity, degree of exploration and development play a paramount role in the economic assessment of the power of any state. Mineral raw materials are the fundamental basis of the material development of society. Currently, there are about 200 different types of mineral raw materials used in industry, agriculture and construction.

Solid minerals. According to the complex of minerals known at present, the described area is identical to the industrially developed territories of the Urals. Ore occurrences and points of mineralization of many minerals are known in the district. Manifestations of ferrous, non-ferrous, rare metals and other minerals are confined to the zone of the Platinum Belt and its framing (Appendix 3).

Within the district are known manifestations of lead, copper, silver, gold and other metals, asbestos, numerous manifestations and deposits of rock crystal. During prospecting and survey work in previous years, placer occurrences of gold were found in many valleys of watercourses in the Berezovsky district of the district. The alluvial gold deposits of Yarota-Shor, Nyarta-Yu, Khalmeryu and Khobeyu have been explored. The area is rich in resources building materials(sand-pebble-gravel mixture, crushed stone, facing stones).

The main deposits and manifestations of solid minerals are concentrated within the zone of outcrop of crystalline rocks of the eastern slope of the Urals, which within the Khanty-Mansiysk Autonomous Okrug has a width of 20–45 km and a length of up to 450 km.

Ferrous metal ores (Fe, Mn, Cr, Ti, V) form iron and manganese within the district. Iron ores are represented by skarn-magnetite and apatite-sulfide-titanium-vanadium-magnetite (Volkovsky type) formations (Khorasyur ore cluster, Usynshor occurrence, etc.). Manganese ores in the Paleozoic formations have not yet been established, but the most promising is manganese mineralization in the Early Paleogene deposits (the Yany-Nyan-Loch-Sos ore occurrence) with a resource of 200 million tons of ore.

Ores of light metals (Al) are represented by deposits and manifestations of bauxites. Within the district, bauxite-promising areas have been identified: Severo-Sosvinsky, Yatrinsky, Khulginsky, as well as Turupinsky and Lyulinsky sites.

Of the non-ferrous metal ores (Cu, Pb, Zn, Ni, Sb), the most widespread ores are of the pyrite type of the copper-polymetallic formation (Tykotlovskaya and Yarotashorskaya sites, Malossvinskoye, Manyinskoye, Leplinskoye ore occurrences, etc.). The main components are copper, lead, zinc.

Ores of rare metals (Sn, W, Mo, Hg, Be, Li, Ta, Nb) are represented by deposits and ore occurrences (Ta-Nb) of alkaline rare-metal-metasomatic (Turupya site) and rare-metal-metamorphic (Man-Khambo site), as well as W-Mo-Bi and W-Be (Torgovskoye field, Maloturupinsky area) formations. Ores of noble (Au, Pt, Ag) metals are represented by primary deposits and placers of the Lyapinsky gold-bearing region, as well as placers of the Severo-Sosvinsky ore region.

The search for alluvial gold in the Subpolar Urals has been conducted since the 19th century. Most intensively and purposefully - starting from the 60s of the twentieth century. The industrial gold content of the valleys of the Yarotashor stream and the river was established. Khobei. In the late 70s, the Yarotashor placer was explored by the thematic exploration party of the Uralzoloto Production Association. A number of industrial placers (Nyartai, tributaries of the Khalmeryu River) were identified by the prospecting and evaluation work of the Northern Party of Uralzolotorazvedka. Alluvial gold in this moment is the second most important type of minerals. As of January 1, 2004, 14 alluvial gold deposits with reserves of 3,306 kg of chemically pure gold were recorded on the territory of the Khanty-Mansiysk Autonomous Okrug - Yugra. Of these, in the distributed fund - 1882 kg. Estimated and approved forecast resources are 20 tons in categories Р1+Р2+Р3.

In the Subpolar Urals of the Khanty-Mansiysk Autonomous Okrug- Yugra is currently widely developed deposits of placer gold from precious metals. Several ore occurrences of bedrock gold have been identified. The predicted resources of ore gold are 128 tons in categories Р1+Р2+Р3. In 2003, the State Reserves Committee of the Russian Federation approved ore gold reserves in the amount of 1156 kg in categories С1+С2.

Ores of disseminated and rare-earth elements do not form independent deposits, but can be extracted along the way during the development of igneous, pegmatite, carbonatite, albitite, hydrothermal and alluvial deposits of ores of non-ferrous, rare and radioactive metals.

The RFN includes the most studied and promising territories of the district. The area of promising lands of the Okrug outside the contours of the allocated license areas is 301.8 thousand km2. During 2004, 11 new deposits were discovered on the unallocated subsoil fund at the expense of the budget of the Autonomous Okrug: Aikaegan Deposits of piezoquartz, vein quartz and rock crystal are now the most developed and partially exploited. About 40 manifestations of vein quartz and rock crystal are known on the territory of the district, which makes the prospects of the Subpolar Urals this species raw materials even higher.

In 2003, OJSC Polar Quartz started mining of vein quartz at the Dodo deposit. JSC "Sosvapromgeologiya" reactivated the Puiva deposit, where collection raw materials (rock crystal) were mined in a small volume (about 3 tons). Since 1993, within the framework of research and development programs and geological study of the subsoil, the district has been conducting research on filtering and sorption properties zeolite-containing rocks of the Subpolar Urals. At the same time, work was underway to prepare the reserves of these rocks in the Mysovsky area. To date, it has been found that zeolite-montmorillonite rocks are excellent sorbents. The prepared reserves of the Mysovskoye deposit are 44 thousand tons. It can be stated with sufficient certainty that Subpolar Urals is a new zeolite-bearing province of Russia.

Reserves of brown coal in categories A + B + C1 amount to 464.5 million tons, in category C2 - more than 1.5 billion tons. In the district, both fairly large brown coal deposits - Otorinskoye, Tolyinskoye, Lyulinskoye, and small – Nyaiskoe, Lopsinskoe, etc. Within the limits of the Lyulinskoye deposit, the Borisovskiy site has been prepared, suitable for mining for local purposes. The reserves of the Borisovskiy site in B+C1 categories are 4.95 million tons. To date, promising areas for lignite have been allocated: Turupinskaya, Okhtlyamskaya, Semyinskaya, etc. The development of deposits is hampered due to the lack of transport routes. Peat reserves in categories A+B+C1 amount to 86.55 million tons, in category C2 - 1148.81 million tons (according to the state balance of mineral reserves of the Russian Federation as of January 1, 2002).

On the flat part of the territory of the district, a large number of deposits of building materials: brick and expanded clay, building and glass sands, sand and gravel mixtures, flint-opal raw materials, ornamental stones. The reserves of deposits of siliceous-opal rocks (flasks, diatomites, tripoli) discovered in the Sovetsky, Berezovsky and Khanty-Mansiysk regions amount to tens of millions of cubic meters. A number of prepared deposits of brick-ceramsite clays are not used only because of the delay in the construction of brick factories. The weak development of deposits of sand and gravel mixtures is due to their location in floodplains. Stocks of building sands are practically unlimited.

Deposits of sapropels have been explored near Khanty-Mansiysk, Surgut, Nizhnevartovsk, Uray. Prepared reserves of sapropel are estimated at more than 10 million m3. It can be used as an organomineral fertilizer and vitamin supplement to the diet of pets. Trial development of individual deposits of sapropel is carried out in the area of Surgut.

In the Subpolar Urals, bauxite-promising areas have been identified - Severo-Sosvinsky, Volinsky-Yatrinsky and Khulginsky (bauxite-bearing in Paleozoic deposits) and Tuyakhlaninsky and Lyulinsky manifestations of Mesozoic bauxites. The genetic relationship of the geological formations of the Subpolar Urals with those in the Northern and Middle Urals allows us to state that the prospects for bauxites in the Okrug are quite high.

Confirmation of the prospects of the iron ore and metallogenic zones identified on the eastern slope of the Subpolar Urals is the discovery of the Okhtlyamsko-Turupinsky ore cluster, the resources of which are estimated at 3.1 billion tons. reserves of which are about 1160 million tons, incl. ores suitable for open pit mining - about 390 million tons. The preparation of iron ore reserves is hampered due to the lack of transport communications.

The predicted resources of category P3 copper are 2,500 thousand tons; zinc category P3 - 2300 thousand tons; manganese ores of P3 category – 284.1 million tons; bauxite category Р1 – 15.0 mln t, category Р2 – 18.0 mln t, category Р3 – 45.0 mln t; brown coal of category P1 - 635 million tons, category P2 - 7764 million tons, category P3 - 4757 million tons; P3 category hard coal - 162 million tons.

As of January 1, 2004, 175 deposits of solid minerals were discovered on the territory of the Okrug, including 7 deposits of quartz, 6 deposits of brown coal, 1 deposit of ore gold, 10 deposits of alluvial gold, 1 deposit of zeolites, 1 deposit of glass sand, 1 deposit of bentonite clay, 1 deposit of building stone, 12 deposits of siliceous raw materials, 73 deposits of brick and expanded clay clay, 53 deposits of building sand, 9 deposits of sand and gravel mixture.

In total, the distributed subsoil fund contains 5 quartz deposits, 6 alluvial gold deposits, 1 zeolite deposit, 1 volcanogenic rock deposit for the production of light foam concrete.

In the Northern Sosva basin, individual signs of platinum were found during the exploration of gold placers. They also note that the Ural researcher Yu.A. Volchenko found that the chromite ores of the Tyumen Urals contain an increased amount of minerals of the platinum group elements - osmium, iridium and ruthenium. These minerals can be recovered by flotation to obtain a collective copper-nickel product (concentrate). Further processing of this concentrate will allow the extraction of copper, nickel and, incidentally, the above-mentioned platinum group metals.

Oil. Oil is a combustible liquid mixture consisting mainly of hydrocarbons of the methane, naphthenic and aromatic series with an admixture of sulfur, nitrogen and oxygen compounds.

One of the main properties of crude (unrefined) oil is its density, which depends on the content of heavy hydrocarbons (paraffins, resins, etc.).

In practice, there is the following classification of oils by density (g / cm 3):

very light (with a very low density) - up to 0.800;

light (with low density) - 0.800 - 0.839;

medium (with average density) - 0.840 - 0.879;

heavy (with high density) - 0.880 - 0.920;

very heavy (with a very high density) - more than 0.920.

In addition, there is a classification of oils according to the content of light fractions: sulfur (S), asphalt-tar substances (AS) and solid hydrocarbons (paraffins - P). The main chemical composition of oil is as follows: carbon - 79 - 88%, hydrogen - 11 - 14%, sulfur - 0.1 - 5%, nitrogen, oxygen, etc.

The territory of the Khanty-Mansiysk Autonomous Okrug accounts for about 80% of the initial potential oil resources of the West Siberian oil and gas province and almost half resource potential Russian oil. About 90% of the area of the district falls on the territories that are promising in terms of oil and gas.

The Okrug is currently one of the main regions where exploration and production of hydrocarbons is carried out; its contribution to the annual production of Russian oil is over 57%.

The main oil and gas fields of the Khanty-Mansiysk Autonomous Okrug are located in the latitudinal Priobye in the subzones of the northern (southern slope of the Siberian Uvals) and middle taiga (Surgut woodlands). As of January 1, 2003, 414 fields were discovered on the territory of the Okrug, including 358 oil, 22 gas and gas condensate, 34 oil and gas, gas and oil and oil and gas condensate fields. At the beginning of 2005, there were 249 fields in operation, 50 of them produced more than 1 million tons of oil per year. About 40% of oil reserves in the fields have already been produced. The current, that is, prepared for development (invested) reserves of categories A and B, account for 4 and 10%, respectively, of the initial reserves of industrial categories of the district, the current explored (non-invested) category C1 - 31%, the preliminary estimated resources of category C2 - 18 %.

Thus, the share of current economically favorable oil reserves (current reserves of ABC1 categories) from the initial ones identified in the district is 45%.

A significant part of the resources in the distributed subsoil fund (RDF) is confined to the territories of the largest producing oil companies, on the territory of which 71% of the initial potential resources of the RDF oil and 84% of the total initial reserves of fields identified in the distributed subsoil fund are accounted for.

The availability of identified resources at existing production levels varies among companies. Some of them are already experiencing a shortage of identified resources to sustain production levels in the coming years.

The RFN includes the most studied and promising territories of the district. The area of prospective lands of the Okrug outside the contours of the allocated license areas is 301.8 thousand km 2 . During 2004, 11 new deposits were discovered on the unallocated subsoil fund at the expense of the budget of the Autonomous Okrug: Aikaeganskoye, Yuzhno-Chistinskoye, Yuzhno-Mytayahinskoye, Yuzhno-Lyaminskoye (Surgutsky district); Tukanskoe (Nefteyugansk region); Novomostovskoye (Sovetsky district); Tanginskoye and Zapadno-Simividovskoye (Kondinsky district); Toreshskoye, Yuzhno-Moimskoye, Oktyabrskoye (Oktyabrsky district). In 2003, 15 deposits were discovered.

At present, 11% of the initial oil potential of the territory of the unallocated subsoil fund (NFS) has been converted into field reserves, and 13% of it falls on promising oil resources of C3 + D0 categories. An analysis of the district’s resource base shows that for its further and effective development, to ensure oil production with current reserves of ABC1 categories, it is necessary to additionally explore C2 resources, search for local objects assessed by C3 and D0 categories, increase the volume of seismic and drilling operations in poorly explored territories and horizons , where a significant part of potential resources has not yet been localized, i.e. accounts for forecast resources of categories D1 and D2.

Most of the oil deposits in the KhMAO fields are characterized by relatively low viscosity values (low viscosity - up to 5 MPa × c) reservoir oils. This is a special group or class of oils that create favorable conditions for solving the technical and economic problems of developing oil resources. Almost 99% of oil (categories A + B + C) of the district are low-viscosity. The predominant part of the Russian fields is characterized by a change in the viscosity of oils in the range of 0.5 - 25 MPa × s (in reservoir conditions), less often up to 70 - 80 MPa × with or more. The main part of the fields of the Shaimsky, Krasnoleninsky districts is characterized by the viscosity of oils in the range of 0.5 - 5.0 MPa × s (only in small areas, oils with a viscosity of 6 - 8.8 MPa × With). In the Surgut region, the share of oils with a viscosity of 6 - 8.5 MPa × c slightly increases, but in the main part of the reserves, the viscosity values are characterized within 0.5 - 5.0 MPa × With. A special place is occupied by the oils of the Nizhnevartovsky region. The predominant part of the deposits is characterized by viscosity in the range of 12 - 20 MPa × with or more. High-viscosity oils were found in the Aptian-Cenomanian deposits of the area (layers PK 1 - PK 21). Thus, at the Van-Eganskoye field, the viscosity of oils in PK 1 - PK 21 formations reaches 95 MPa × s, in the AB 1 formation - 12.4 MPa × s, and somewhat deeper - in the layers AV 3 and AV 4 - 7 - it decreases to normal values of 3.9 and 2.2 MPa × with respectively.

According to source data, Tyumen oil, along with a high content of gasoline and kerosene fractions, has a lot of sulfur, which must be separated. In terms of sulfur content, the district's oil is mainly medium-sulphurous (0.51 - 2%), its reserves are approximately 72% of the total reserves. Reserves of low-sulphurous oil (up to 0.5%) amount to just over 27%. Reserves of sour oil (more than 2%) are 0.9%. The separation of sulfur occurs by converting it into sulfuric acid (according to special technologies) at special oil refineries.

Natural gas is a mixture of gaseous hydrocarbons (methane, ethane, propane, butane and pentane). The share of methane in it is 85 - 99%. In addition, natural gas contains nitrogen, carbon dioxide, helium, argon, water vapor, hydrogen sulfide and mercury in varying amounts.

Large gas fields are located on the territory of the Autonomous Okrug: Berezovskoye, Verkhne-Kolik-Eganskoye, Kolik-Eganskoye, Varyeganskoye, Lyantorskoye, Federovskoye, Van-Eganskoye, Samotlorskoye, Bystrinskoye, Mamontovskoye, Priobskoye, etc. 85.5% of the reserves are concentrated in these fields free gas district.

Natural gas is the most important in terms of concentration and practical use.

There are differences in the composition of free and oil-dissolved gases, which are especially noticeable in the distribution of hydrocarbon components. Free gases - methane up to 85–98%, the sum of methane homologues in the range of 0.1–10%; oil-dissolved gases – methane up to 60–70%; the sum of methane homologues is within 1–25%. Non-hydrocarbon components are represented mainly by nitrogen and carbon dioxide; hydrogen, hydrogen sulfide, helium, argon, mercury, vapors of volatile liquid acids, etc. are found in the form of minor impurities. However, there are cases when "minor impurities" become very noticeable components. Thus, the content of non-hydrocarbon components of natural gas is characterized by: carbon dioxide - from fractions of a percent to 10–15%, sometimes higher (up to 85% in the deposits of the Samutnelskoye field in the Berezovsky district of Yugra); nitrogen - most often within 1-3%, but in some cases up to 4-60% or more, hydrogen sulfide - no more than 1-3%, but in some cases up to 10-23%.

Within the district, the largest accumulations of GHGs are associated with deposits of coal-bearing and continental-sub-coal-bearing formations with high contents of humus-type OM. In the conditions of Western Siberia, this class of formations includes Cenomanian and Patan deposits, which are associated with the largest and unique SGG deposits (Urengoyskoye, Yamburgskoye, Bovanenkovskoye, Kharasaveyskoye, etc.). No large SGG deposits have been found within the region. Most of the SGG accumulations identified here are confined to the Jurassic deposits and belong to the classes of small and medium in size. The territory of the district belongs to the lands predominantly oil-bearing.

hmao Minerals, Natural resources Yugra, Khmao fossils

Oil resources and reserves

The initial recoverable potential oil resources of the territory of the Khanty-Mansiysk Autonomous Okrug are estimated at 39.6 billion tons, geological - at 121.1 billion tons. To date, half of the potential resources have been transferred to the identified reserves of ABC 1 C 2 categories; 20.2 billion tons of recoverable and 61.2 billion tons of geological oil resources remained undiscovered. Of the total volume of undiscovered recoverable resources, 3.5 billion tons are supposed to be associated with known traps prepared mainly by seismic surveys (localized forecast C 3 + D 0), 16.7 billion tons - have an assessment of categories D 1 + D 2 (non-localized forecast).

As of January 1, 1997, 365 fields were discovered in the Okrug, including 313 oil, 26 gas and 26 oil and gas fields. The fields are mostly multilayer, the total number of deposits is 2,228, including 2,035 oil, 106 oil and gas, 87 gas. 137 fields (737 deposits) are under development. The initial recoverable discovered oil reserves of the Okrug amount to 19.4 billion tons. 20% of the identified reserves are insufficiently explored and are estimated at C 2 category (3.7 billion tons). The current recoverable explored reserves (ABC 1) amount to 9.2 billion tons, including categories: A - 0.8 billion tons, B - 1.9 billion tons, C 1 - 6.5 billion tons. The developed deposits contain 14.0 billion tons of initial recoverable oil reserves of ABC 1 categories (including 7.7 billion tons of current ones) and 1.2 billion tons of C 2 category. The extraction of 6.5 billion tons of oil from the bowels led to the formation of standard losses in the amount of about 8 billion tons. These so-called "impoverished" resources are concentrated in the depleted parts of exploited deposits and, as a rule, are confined to areas with the most developed infrastructure .

The identified resources, both initial and current, are largely associated with large-sized accumulations (Table 1.22). The share of current ABC 1 reserves attributable to unique deposits is 26%, the share of initial reserves is 36%, the share of small deposits is 16% and 12%, respectively. The unique deposits, which by now accounted for more than 50% of the cumulative production of the district, in 1995 accounted for 26% of the annual oil production. The role of smaller deposits in the total annual oil production in the district is increasing. So, with a 7% contribution to the cumulative production in the district, in 1995 they accounted for 16% of the oil produced.

Table 1.22

Distribution of discovered deposits of the Khanty-Mansiysk Autonomous Okrug by the value of initial recoverable reserves of ABC 1 C 2 categories

		Classes of deposits by size of reserves, million tons
Types of deposits, reserves		small		Medium	Large		Unique
		0-3	3-10	10-30	30-100	100-300	>300
Quantity	things	1380	340	192	60	20	8
deposits	%	69	17	9,6	3	1	0,4
Current retrievable	billion tons	0,18	0,3	0,45	0,51	0,78	0,78
reserves of ABC 1 categories	%	6	10	15	17	26	26

About 10 thousand deposits are to be discovered in the district, of which a significant part (90%) are small in size. The share of undiscovered resources attributable to small deposits - 52%, medium - 18%, large - 29% and unique - about 1%.

In 1996, as a result of exploration work, 9 new deposits were discovered, including 7 in the unallocated subsoil fund. The increase in category C 1 reserves in the Khanty-Mansi Autonomous Okrug due to exploration amounted to 58 million tons.

The production rate of all explored reserves is quite high, but two-thirds of these reserves require huge additional investments. In reality, the production of the district is provided only by invested reserves, and the situation here is very tense. Many oil companies the districts are on the verge of a resource crisis. The production of Surgutneftegaz is secured by invested reserves for 12-13 years, Kogalymneftegaz - for 9-10 years, Langepasneftegaz - for 9-13 years.

Economic evaluation of oil reserves

In conditions of paid subsoil use economic evaluation reserves are just as important as the quantification of resources. The NAC RN KhMAO has developed a methodology for calculating the economic significance of oil reserves, which is based on taking into account:

Concentrations of recoverable reserves per unit area of the development object;

The value of the initial debits;

Depths of occurrence;

environmental conditions;

Infrastructure.

This technique makes it possible to estimate the minimum necessary costs (z) (excluding taxes and payments) for the extraction of 1 ton of oil.

The distribution of all development objects of the Khanty-Mansiysk Autonomous Okrug (Fig. 1.11) shows that 6% of reserves of ABC1 categories, and, accordingly, 12 development objects can produce oil with a minimum necessary costs for its extraction (z) less than $20 per ton. The value of z - 20-40 $ / t is characterized by 42% of the reserves and 113 objects of development, with costs of 40-60 $ / t there are 32% of the reserves and 207 objects, 15% of the reserves (224 objects) have an estimated value of z - 60-80 $ /t, 5% of reserves are characterized by costs exceeding $80/t.

Complex modeling of various schemes for the development of deposits under the current taxation system showed that by paying all existing taxes and payments, it is possible to profitably develop deposits, development objects for which taxes and payments are partially paid, then an additional 200 objects and 40% of reserves can be profitable, while z should not exceed 55 $/t. The introduction of production sharing contracts makes it possible to profitably operate facilities with z up to $60-65/t at current oil prices.

Thus, the share of active resources in the resource base significantly depends on the tax and economic policy states. With the existing economic system The oil industry of the Okrug is provided with explored invested active reserves only for 7 years. With the most favorable economic system, but without attracting additional investments for the development and re-development of fields, the security is 17 years; under the same conditions and with powerful investments - 35 years.

solid minerals

The main deposits and manifestations of solid minerals are concentrated within the zone of outcrop of crystalline rocks of the Eastern Slope of the Urals, which has a width of 20-45 km within the district and a length of up to 450 km. The state of the mineral resource base and the development of solid mineral deposits in the Khanty-Mansiysk Autonomous Okrug today is determined primarily by the results of more than 60 years of activity of geological and mining organizations in this region.

Piezo quartz, rock crystal and vein quartz

The most prepared (and partially exploited) deposits of piezoquartz, vein quartz and rock crystal are now. Among them are the deposits of Puyva and Dodo, which have been developed since 1936, as well as the deposits of Nester-Shor, Glass field 1, Lower Keftalik, Khus-Oyka, etc., discovered in the 30-40s. About 40 manifestations of vein quartz and rock crystal, which makes the prospects of the Subpolar Urals for this type of raw material even higher. The state of the district quartz industry (as well as the Russian Federation as a whole) is determined economic situation country and the state of its defense industry as the main consumer of high-quality quartz raw materials. Due to declining demand from the defense industry, quartz production at the Puiva and Dodo deposits is gradually declining. In 1995, 27.4 tons of rock crystal and 3,000 tons of vein quartz were mined; in 1996, mining amounted to 15 tons of rock crystal and 960 tons of vein quartz, respectively. Prepared reserves are sufficient to increase production by 2-3 times and maintain it for more high level over the course of a number of years.

Alluvial gold

Placer gold is currently the second most important type of minerals. On the territory of the Autonomous Okrug, 16 placers have been explored, including placers along the Khalmeryu River, Palnik-Shor Brook, Bezymyanny-1 Brook, Bezymyanny-2 Brook, Oshka-Shor Brook, Mal. Tynagota River, Ruda-Shor Brook , the Nyarta-Yu river, the Nester-Shor stream, the Yarato-Shor stream, the Manya, Arbynya rivers, etc. The balance reserves of gold in the district are more than 4 tons. In 1995, over 130 kg of metal was mined; in 1996 production dropped to 96 kg. In 1997, within the framework of the “Territorial program for the reproduction of the mineral resource base of the Khanty-Mansiysk Autonomous Okrug”, additional exploration and exploration of individual placers in the Lyapin River basin was started. The further program of exploration work in the Subpolar Urals provides for the shift of work to the basins of more southern rivers that are not spawning for whitefish.

Ore gold (root)

The subpolar Urals within the district is potentially rich in ore gold, the predicted resources of which are estimated at 100-120 tons. Preparation of ore gold deposits requires significant capital investments. To date, only one deposit has been prepared - Sosnovoye, the reserves of which are being specified. The next in terms of preparedness and prospects is the Palnik-Shor section. Exploration work is currently underway in this area.

Brown coal

In the district, such fairly large lignite deposits have been explored with varying degrees of detail: Otorinskoye (559 million tons in the P 1 + C 1 categories), Tolyinskoye (465.8 million tons in the P 1 + C 2 categories), Lyulinskoye (758, 7 million tons in category C 2); small - Nyaiskoe (18.4 million tons in C 1 + C 2 categories), Lopsinskoe (51 million tons in C 1 + C 2 categories), etc. Within the limits of the Lyulinskoye field, the Borisovsky site (deposit) has been prepared, suitable for mining for local purposes. The reserves of the Borisov subsoil in categories В+С 1 amount to 4.95 mln. depth interval 0-300 m). The development of deposits is hampered by the lack of transport routes.

bauxites

Iron ores

Iron ore metallogenic zones have also been identified on the eastern slope of the Subpolar Urals. Confirmation of the prospects of the named area is the discovery in last years on its area of the Okhtlyamsko-Turupinsky ore cluster, the resources of which are estimated at 3.1 billion tons. Within its limits, two promising manifestations of skarn-magnetite ores are established - Okhtlyamskoye and Yany-Turinskoye, the total predicted reserves of which are about 1,160 million tons, including ores suitable for open-pit mining - about 390 million tons. The preparation of iron ore reserves is hampered due to the lack of transport communications.

Rocks with sorption properties

Starting from 1993, within the framework of the programs of scientific research and geological study of the subsoil in the district, studies of the filtering and sorption properties of zeolite-containing rocks of the Subpolar Urals were carried out. At the same time, work was underway to prepare the reserves of these rocks in the Mysovsky area (right bank of the Lyulya River). To date, it has been found that zeolite-montmorillonite rocks are excellent sorbents (high ion-exchange properties). The prepared reserves of the Mysovskoye deposit are 44 thousand tons. It can be stated with sufficient confidence that the Subpolar Urals is a new zeolite-bearing province of Russia.

Deposits of building materials

A large number of deposits of building materials have been discovered on the flat part of the district territory: brick and expanded clay, building and glass sands, sand and gravel mixtures, flint-opal raw materials, ornamental stones (Table 1.23). The reserves of deposits of siliceous-opal rocks (flasks, diatomites, tripoli) discovered in the Sovetsky, Berezovsky and Khanty-Mansiysk regions amount to tens of millions of cubic meters. A number of prepared deposits of brick-ceramsite clays are not used only because of the delay in the construction of brick factories. The weak development of deposits of sand and gravel mixtures is due to their location in floodplains. Stocks of building sands are practically unlimited. Glass sands in the region were discovered in the 1950s; To date, two deposits have been explored and about 40 manifestations of this raw material have been identified.

Table 1.23

Deposits of building materials of the Khanty-Mansiysk Okrug

Construction raw materials	Number of explored deposits	Total reserves, million m 3	Number of fields put into operation
Sand and gravel mixtures	33	38,85	1
Building sands	30	941	5
Silicon Opal Raw Material	11	19	-
Brick-expanded clay	47		12
glass sands	2		-

Sapropels

In recent years, as a result of prospecting and exploration work, sapropel deposits have been explored in the Okrug - near Khanty-Mansiysk, Surgut, Nizhnevartovsk, Uray. Prepared reserves of sapropel are estimated at more than 10 million m 3 . It can be used as an organomineral fertilizer and vitamin supplement to the diet of pets. Trial development of individual deposits of sapropel has begun in the area of Surgut.

The Khanty-Mansiysk Autonomous Okrug is one of the richest regions of the country in natural resources. A unique oil and gas province has been discovered here. Huge reserves of hard and brown coal, iron ores and non-ferrous metal ores are concentrated on the territory of the region. There are large reserves of peat in the region, as well as concentrated large stocks wood, mostly conifers. In terms of fish stocks, such a region as Western Siberia, which includes Khanty-Mansiysk Autonomous Okrug, is one of the richest regions of Russia. The region also has significant stocks of furs.

The oil and gas produced in the district has high quality. Oil is lightweight, low-sulfur, has a large yield of light fractions, it includes associated gas, which is a valuable chemical raw material. The gas contains 97% methane, rare gases, and at the same time there is no sulfur, little nitrogen and carbon dioxide. Oil and gas deposits at depths of up to 3 thousand meters in soft, but stable, easily drillable rocks are distinguished by a significant concentration of reserves. Production costs for 1 ton of standard fuel natural gas are the lowest compared to all other fuels. Oil production is concentrated mainly in the Middle Ob. The nearest domestic oil and gas processing plants are located in Omsk, Tobolsk and Tomsk industrial hubs, large oil and gas processing complexes are being created in Tobolsk and Tomsk.

Despite the fact that most of the fields in Russia have entered the final stage of development. Russia continues to occupy one of the leading positions in terms of explored hydrocarbon reserves. However, a constant deterioration in the structure of reserves should be noted: most of them are currently classified as hard-to-recover and confined to deposits characterized by a complex geological structure, low and ultra-low permeability, high oil viscosity, complicated by the presence of faults, active bottom waters and gas caps.

The district has significant water resources. The rivers have a high hydropower potential. However, the flat nature of the surface makes it inefficient to use the hydropower resources of the Ob, Irtysh and their major tributaries. The construction of dams on these rivers will lead to the creation of large reservoirs, and the damage from the flooding of vast forest areas, and possibly oil and gas fields will block the energy effect from the hydroelectric power station. Of significant interest are underground thermal waters. They can be used for heating greenhouses and greenhouses, heating of agricultural facilities, cities and workers' settlements, as well as for medicinal purposes.

The territory of the Khanty-Mansiysk Autonomous Okrug belongs to two botanical and geographical regions: the Ural mountainous and the West Siberian plains. The main part is located within the West Siberian plain botanical and geographical region, which is characterized by a distinct zonal division of vegetation. Within the district, subzones of the northern, middle and southern taiga are distinguished. The northern taiga subzone is characterized by a combination of sparse forests, flat-hilly and large-hilly bogs, and meadow-bog-sor plant communities of floodplains of large rivers. Larch, pine-larch, and pine forests and woodlands. On flat watersheds, larch-spruce-cedar, larch and spruce forests. Forests are sparse and low productivity. The ground cover of such forests is formed by shrubs - wild rosemary, cranberries, blueberries, blueberries and green mosses. Lichens are found in patches. Significant areas are occupied by swampy forests: larch, larch-pine and spruce, shrub-long-moss and sphagnum. Waterlogging averages 40%. One tenth of the territory is occupied by flat-hilly complex bogs. Dark coniferous and pine forests are widespread in the middle taiga subzone. The forests of the northern part of the subzone are reminiscent of those of the northern taiga - with the participation of larch, shrubs and green mosses in the ground cover. They differ from the northern taiga ones in greater density, higher stand height, and hence productivity. Tree stands form spruce and cedar, on rich soils they are joined by fir. Pine forests are replaced by dark coniferous forests with increasing swamping and on sandy river terraces, manes and ridges, where they form magnificent white moss forests. Cowberry pine forests often represent secondary forests on the site of a burnt dark coniferous taiga. The southern taiga is represented by dark coniferous, pine and small-leaved (birch, aspen) forests. The zonal type is highly productive cedar-spruce-fir green-moss and small-grass forests with abundant undergrowth and diverse undergrowth, which may include linden. Pine forests different types found in small patches among swamps or on sands. Birch and aspen forests are predominantly secondary forests resulting from logging and fires. A special place in the structure of the vegetation cover of the district is occupied by the vegetation of river valleys. The vegetation here is diverse - from primary groups on young river drifts to forests of cedar, pine, birch at high floodplain levels and on the remnants of river terraces.

At low levels, sedge meadows are widespread in the floodplains;

The richest, most diverse, interesting vegetation in the Ural Mountains. In the vegetation cover of mountain landscapes, the influence of Siberian flora, on the one hand, and European flora, on the other, is very great. Many plant species have here the boundaries of their range (western or eastern). Alpine and arctic circumpolar species are also present. Quite numerous rare plants, endemics and relics. For the Subpolar Urals, out of 28 rare and endangered species, 13 are endemic, 2 are relics, 6 are rare, existing in the form of small populations, 7 are species that are reducing their range. Mountain plant communities rich in medicinal, nutritional and other useful species plants. The most famous and valuable of them is Rhodiola rosea - golden root. There are reindeer pastures here. Northern taiga forests approach the foot of the Subpolar Urals. These forests are sparse, undersized, often swampy, interspersed with frozen swamps and sphagnum peat bogs. Pine forests predominate, larch, spruce and spruce-cedar forests occupy a smaller area. The undergrowth in these forests is poorly developed. Herbaceous-shrub cover is poor in species composition, marsh plants are often found. Mosses and, in some places, lichens play an important role in the composition of the ground cover.

The subalpine belt is characterized by mountain meadows, which are especially widely represented in the southern part of the Subpolar Urals. Here, on the upper border of the forest along the gentle slopes of the hills, there are vast glades with rich herbaceous vegetation - dense herbage (coverage reaches 95-100%) and high (15-20 cm, generative shoots up to 50 cm). White-flowered geranium, Uralic lagotis, and burnet are dominant. Rhodiola rosea, golden rod, alpine pachypleurum, winding pike, blueberries are very plentiful. Lobel's hellebore, various-leaved bodyag, fragrant spikelet, etc.

The mountain-tundra belt rises to 800-900 m. Within its limits, from bottom to top, strips of shrubs, shrubs, lichens and stony tundras are clearly distinguished. Shrub tundras are mainly represented by communities of dwarf birch - dwarf birch, quite often there are thickets of willows along streams and alder along steep stony slopes and places with abundant flowing moisture. The basis of shrub tundra is blueberry, crowberry, arctous, and dryad. Vegetation cover is interrupted by stony placers.

The flora of the district creates conditions for the habitat of valuable species of animals - it gives them food and shelter. For humans, vegetation is also of great importance. The properties of plants and vegetation cover that are significant for humans are considered as plant resources, which in turn can be characterized as the potential wealth contained in the flora and vegetation. The nature of the Khanty-Mansiysk Autonomous Okrug, in addition to rich subsoil, also has a significant resource potential for agriculture and forestry. The district is characterized by peat-boggy and podzolic soils, in the floodplains of the Ob and Irtysh alluvial soils, which are suitable for growing vegetables and other crops. Meadows in the floodplains represent a rich fodder base for the development of animal husbandry, their total area over 1.5 million hectares.

Ensuring the use of natural resources traditional for the indigenous population acts as important aspect for Khanty-Mansiysk Okrug. For example, the preservation of the fodder base for the development of reindeer husbandry ensures the existence and development of this kind of activity as the basis for preserving the traditional way of life and ethnic characteristics that have been formed over the centuries precisely in connection with this activity.

Biological resources, as such, including plant ones, are considered renewable by specialists, but they are such only if there are opportunities for their restoration. Full-scale provision of replenishment of biological resources is the main sign of rational nature management. In practice, three situations are possible: rational use, disuse, damage and loss. All these situations are also relevant for the Khanty-Mansiysk Okrug. However, it is easiest to give examples of damage and loss of resources. First of all, they are connected with the industrial development of the territory, which will be shown in more detail in Chapter 3. There is also the presence of unused resources - medicinal raw materials, food plants, for example, it is difficult to find examples where the full restoration of the resource potential would be ensured in the conditions of its use. The Okrug is characterized by a combination of territories where biological resources are lost or damaged to a certain extent (industrial zones accompanying their large settlements and their environs), with territories that have retained their resource potential.

Food plant resources, including berries and lettuces, in the flat territory of the Khanty-Mansiysk Okrug are represented by fifty species of higher plants. Among the berry plants that have practical value, include lingonberries, blueberries, blueberries, cloudberries and cranberries. The most widespread is lingonberry.

List medicinal plants includes 148 species. Of these, 66 species are used in official medicine. The most important medicinal raw materials are chaga mushroom and birch buds. Cowberry leaf has significant reserves, the reserves of which practically do not limit the workpieces. In addition to lingonberries, rose hips, mountain ash, bird cherry can be attributed to promising sources of medicinal raw materials in terms of reserves, productivity and needs.

There are significant reserves of some technical plants. Willows, shrub alder, larch, snake mountaineer, as well as wild rosemary, birch, lingonberry, three-leaf watch, blueberry can serve as tanning raw materials. There are dyeing plants: sphagnum moss, blueberries, club mosses, common cuff. Fibrous (nettle, some types of sedges, narrow-leaved fireweed, reedweeds, etc.), wicker, stuffing and packaging plants (narrow-leaved fireweed, meadow grass species, etc.), and many ornamental plants are widely represented.

The fauna of the region's mammals is quite rich and represents a typical taiga complex, including about fifty species belonging to six orders. The uncertainty in the number of mammal species in the district is caused, on the one hand, by the incomplete study of the territory of the district, and, on the other hand, by the fact that a number of species here have the boundaries of their ranges, which can shift, depending on conditions, by tens or even hundreds of kilometers into that region. or the other side. Ermine, otter, weasel and wolverine are common throughout the district, but only the first of listed species numerous, the rest are quite rare. Otter Leading semi-aquatic image life, lives along the shores small rivers and in the areas of the upper reaches of the large tributaries of the Ob and Irtysh. Two other semi-aquatic species, the European and American minks, adhere to approximately the same habitats. But the first of them is extremely rare and is found only in the west of the district. The forest deer, which is a subspecies of the reindeer, also lives here.

Among the lagomorphs, the most numerous species in the Khanty-Mansiysk Autonomous Okrug is the Ural northern pika. This endemic subspecies of the northern pika is found only in the Ural Mountains.

The largest representative of the rodent order in Ugra is the beaver. Possessing a very valuable fur, this species has long been an object of fishing. At present, only the Kondo-Sosvinsky hearth has been preserved from the former vast area, supported by the protected area of the Malaya Sosva Reserve and the Verkhne-Kondinsky beaver reserve. To restore the number of beavers in the district, it is required whole complex activities, both environmental and biotechnical.

Of the renewable natural resources, forest and fish stocks are also large. Historically, these factors contributed to the development of such traditional types of crafts of the indigenous peoples of the North living in the territory of the Autonomous Okrug as fishing, fish processing, hunting, reindeer husbandry, collection and processing of wild fruits, mushrooms and nuts, national economic crafts, souvenir production. And at present, these types of crafts form the basis of the traditional way of life of the indigenous national population.

The traditional economy of the Khanty and Mansi late XIX and the beginning of the 20th century, has retained many of its features to the present day. Most of the indigenous population leads a typical taiga way of life. These are semi-sedentary hunters and fishermen, who are also engaged in reindeer herding in the north and cattle breeding in the south of the Autonomous Okrug. Depending on local geographical conditions, one of the named types of occupation came to the fore.

Fishing is of paramount importance in the life of the indigenous national population. Fishing is concentrated in feeding areas and along the migration routes of fish. Greatest development fishing received on the highways of the Ob, Irtysh, Severnaya Sosva, as well as the lake-river systems of the Kondinsky, Berezovsky, Beloyarsky, Khanty-Mansiysk, Surgut regions. On the rivers Ob, Irtysh, Konda, Severnaya Sosva, the Khanty, Mansi, and Nenets mainly use nets, fixed and flowing nets for fishing; When the fish came out of the litters, a locking method of fishing was used. The main types of fish caught in the above reservoirs are valuable ones - muksun, peled, pyzhyan, shokur, nelma; from partial - pike, ide, roach, dace. In the lake-river systems, the aborigines of the district use simple, but effective ways fishing: constipation, cats, muzzles, gimgi, wicks.

In the traditional sector of the economy, one of the important occupations of representatives of the indigenous peoples of the North is hunting. This type of fishing brought the greatest income until 1990. In subsequent years, due to low purchase prices, a reduction in the range of hunting resources, and the lack of a sales market, the hunting economy has lost its significance. The most important objects of fur trade are - squirrel, sable, muskrat, ermine, fox; from ungulates - elk, deer. Before the revolution of 1917, indigenous minorities The north used various traps in hunting. Currently more commonly used firearms and traps.

With all its diversity and richness, the territory of the Khanty-Mansiysk Autonomous Okrug has very little arable land and is a zone of risky farming. That's why most of agricultural and food products are imported from other regions of Russia.

In general, the Khanty-Mansiysk Autonomous Okrug has huge natural resource potential. First of all, these are oil reserves and forest resources. Deposits of alluvial and native gold, and vein quartz have also been explored and mined. There are large resources of peat, as well as manifestations of bauxites, copper, zinc, lead, niobium and other rare earth metals. Deposits of brown and black coal have been discovered. Deposits of niobium, tantalum, manifestations of bauxite, etc. have been discovered. Deposits of decorative stone, brick-expanded clay, building sands are being prepared for development.

In the next three years, the KhMAO government plans to intensify industrial development deposits of solid minerals. This is due to the need to develop directions in the district that are alternative to the oil industry. The subpolar Urals can play the role of a "silicon valley" for the country. Experts estimate the wealth of this northern part of the district at 7 trillion. dollars. The predicted resources of ore gold in Yugra exceed 50 million tons, the resources of copper, zinc, and lead average 10 million tons each. In addition, titanium-zirconium placers, platinum group metals, jasper, coal and even diamonds can be found on the territory of the KhMAO.