Southern part of the Priobskoye deposit. Geology of the Priobskoye deposit (Priobka). Main geological and physical characteristics of the deposit

Oil fields of Russia
http://www.kommersant.ru/doc-rss.aspx?DocsID=1022611

The northern three quarters of the field was controlled by YUKOS via an its daughter-company Yuganskneftegaz, and began oil production in 2000. In 2004 Yuganskneftegaz was bought by Rosneft, which is now the operating company for that portion of the field. The southern quarter of the field was controlled by Sibir energy, which began a joint venture with Sibneft to develop the field, with volume production beginning in 2003. Sibneft subsequently acquired complete control of the field via a corporate maneuver to dilute Sibir's holding. Sibneft is now majority controlled by Gazprom and renamed Gazprom Neft.
http://en.wikipedia.org/wiki/Priobskoye_field

Priobskoye field (KhMAO)
Reserves, mt
АВС1 - 1061.5
C2 - 169.9
Production in 2007, million tons - 33.6

For many years, the largest field, both in terms of reserves and oil production, was the Samotlor field. In 2007, for the first time, it lost first place to the Priobskoye field, where oil production reached 33.6 million tons (7.1% of Russia's), and explored reserves increased by almost 100 million tons compared to 2006 (taking into account repayment at mining).
http://www.mineral.ru/Facts/russia/131/288/index.html

Abdulmazitov R.D. Geology and development of the largest and unique oil and oil and gas fields in Russia.
http://geofizik.far.ru/book/geol/geol009.htm
http://rutracker.org/forum/viewtopic.php?t=1726082

http://www.twirpx.com/file/141095/
http://heriot-watt.ru/t2588.html

Priobskoye is a giant oil field in Russia. Located in the Khanty-Mansiysk Autonomous Okrug, near Khanty-Mansiysk. Opened in 1982. It is divided by the Ob River into two parts - left and right bank. The development of the left bank began in 1988, the right bank - in 1999.

Geological reserves are estimated at 5 billion tons. Proved and recoverable reserves are estimated at 2.4 billion tons.

The deposit belongs to the West Siberian province. Opened in 1982. Deposits at a depth of 2.3-2.6 km. Oil density 863-868 kg/m3, moderate paraffin content (2.4-2.5%) and sulfur content 1.2-1.3%.

As of the end of 2005, the field has 954 production and 376 injection wells, of which 178 wells were drilled during the last year.

Oil production at the Priobskoye field in 2007 amounted to 40.2 million tons, of which Rosneft - 32.77, and Gazprom Neft - 7.43 million tons.

At present, the development of the northern part of the field is carried out by LLC RN-Yuganskneftegaz, owned by Rosneft, and the southern part by LLC Gazpromneft-Khantos, owned by Gazprom Neft.
http://ru.wikipedia.org/wiki/Priobskoye_oil_field

http://www.blackbourn.co.uk/databases/hydrocarbon-province-maps/west-siberia.pdf

PRIOBSKOYE: THERE ARE 100 MILLIONS! (Rosneft: Company Bulletin, September 2006) -
On May 1, 1985, the first exploration well was laid at the Priobskoye field. In September 1988, on its left bank, flowing production began from well No. 181-P with a flow rate of 37 tons per day. On the last day of July 2006, the oilmen of Priobsky reported on the extraction of the 100 millionth ton of oil.

The license for the development of the deposit belongs to OAO Yuganskneftegaz.
The largest field in Western Siberia - Priobskoye - is administratively located in the Khanty-Mansiysk region at a distance of 65 km from Khanty-Mansiysk and 200 km from Nefteyugansk. Priobskoye was discovered in 1982. It is divided by the Ob River into two parts - left and right bank. The development of the left bank began in 1988, the right bank - in 1999.

According to the Russian classification, explored oil reserves are 1.5 billion tons, recoverable - more than 600 million tons.
According to the analysis prepared by the international auditing company DeGolyer & MacNaughton, as of December 31, 2005, the oil reserves of the Priobskoye field according to the SPE methodology are: proven 694 million tons, probable - 337 million tons, possible - 55 million tons.

Reserves for the field according to Russian standards as of 01.01.2006: NGZ (Oil and gas reserves) - 2476.258 million tons.

Oil production at the Priobskoye field in 2003 amounted to 17.6 million tons, in 2004 - 20.42 million tons, in 2005 - 20.59 million tons. In the strategic development plans of the company, one of the main places is assigned to the Priobskoye field - by 2009 it is planned to produce up to 35 million tons here.
On the last day of July 2006, the oilmen of Priobsky reported on the extraction of the 100 millionth ton of oil. 60% of the territory of the Priobskoye field is located in the floodplain of the Ob River; environmentally friendly technologies are used in the construction of well pads, pressure oil pipelines and underwater crossings.

History of the Priobskoye field:
In 1985, commercial oil reserves were discovered, according to the tests of well 181r, an inflow of 58 m3 / day was obtained
In 1989 - the beginning of drilling of 101 pads (Left Bank)
In 1999 - commissioning of wells 201 pad (Right Bank)
In 2005, the daily production amounted to 60,200 tons per day, the production fund of 872 wells, 87,205.81 thousand tons have been produced since the beginning of development.

Only in recent years, 29 underwater crossings have been completed at the field using the directional drilling method, including 19 new ones built and 10 old ones reconstructed.

Site objects:
Booster pump stations - 3
Multiphase pumping station Sulzer-1
Cluster pumping stations for pumping the working agent into the reservoir - 10
Floating pumping stations - 4
Oil preparation and pumping workshops - 2
Oil separation unit (USN) - 1

In May 2001, Sulzer's unique multiphase pumping station was installed at pad 201 on the right bank of the Priobskoye field. Each pump of the installation is capable of pumping 3.5 thousand cubic meters of liquid per hour. The complex is served by one operator, all data and parameters are displayed on a computer monitor. The station is the only one in Russia.

The Dutch pumping station "Rosskor" was equipped at the Priobskoye field in 2000. It is designed for intrafield pumping of multiphase fluid without the use of flares (to avoid associated gas flaring in the floodplain of the Ob River).

The drilling cuttings processing plant on the right bank of the Priobskoye field produces silicate brick, which is used as building material for the construction of roads, pad foundations, etc. To solve the problem of utilization of associated gas produced at the Priobskoye field, the first Gas Turbine Power Plant in Khanty-Mansi Autonomous Okrug was built at the Prirazlomnoye field, which provides electricity to the Priobskoye and Prirazlomnoye fields.

The power transmission line built across the Ob has no analogues, the span of which is 1020 m, and the diameter of the wire specially made in the UK is 50 mm.
http://vestnik.rosneft.ru/47/article4.html

November 5, 2009 was another significant day in the history of Yuganskneftegaz - the 200 millionth ton of oil was produced at the Priobskoye field. Recall that this giant oil field was discovered in 1982. The field is located near Khanty-Mansiysk and is divided into two parts by the Ob River. The development of the left bank began in 1988, the right bank - in 1999. The 100 millionth ton of oil was produced at the field in July 2006.
http://www.uralpolit.ru/86/econom/tek/id_160828.html

24.03.2010 In 2010, Rosneft Oil Company plans to produce 29.6 million tons of oil at the Priobskoye field, which is 12.4% less than was produced in 2009, the information department of the company says. In 2009, Rosneft produced 33.8 million tons of oil from the field.

In addition, according to the report, Rosneft today commissioned the first stage of a gas turbine power plant (GTPP) at the Priobskoye oil and gas field. The capacity of the first stage of the GTPP is 135 MW, the second stage is planned to be commissioned in May 2010, the third - in December. The total capacity of the station will be 315 MW. The construction of the station, together with auxiliary facilities, will cost Rosneft 18.7 billion rubles. At the same time, according to the message, due to the rejection of hydraulic structures and installation of steam power equipment, capital expenditures for the construction of the GTPP were reduced by more than 5 billion rubles.

The head of Rosneft, Sergey Bogdanchikov, noted that the commissioning of the Priobskaya GTPP simultaneously solves three problems: the utilization of associated gas (APG), the provision of electricity to the field, and the stability of the region's energy system.

In 2009, Rosneft produced more than 2 billion cubic meters at the Priobskoye field. m of associated petroleum gas (APG), and used only a little over 1 billion cubic meters. m. By 2013, the picture will change: despite the decline in APG production to 1.5 billion cubic meters. m, its use will reach 95%, the report says.

According to S. Bogdanchikov, Rosneft is considering the possibility of providing Gazprom Neft with its pipe for transporting associated petroleum gas from the Priobskoye field for disposal at the Yuzhno-Balyksky gas processing complex of SIBUR. It is reported by RBC.
http://www.oilcapital.ru/news/2010/03/241042_151839.shtml

Rosneft provides up to 30% of its energy consumption with its own facilities. Power plants operating on associated gas have been built: at the Priobskoye field, at Vankor, in the Krasnodar Territory.
http://museum.rosneft.ru/future/chrono/year/2020/

19/12/2009
Gazprom Neft has put into operation the first phase of the Yuzhno-Priobskaya gas turbine power plant (GTPP) at the Priobskoye field (KhMAO), built by the company for its own production needs, the company said in a statement.
The capacity of the first stage of the GTPP was 48 MW. The volume of capital investments for the introduction of the first stage is 2.4 billion rubles.
At present, Gazpromneft-Khantos' electricity demand is about 75 MW of electricity, and according to the calculations of the company's specialists, by 2011 energy consumption will grow to 95 MW. In addition, in the coming years, the tariffs of the Tyumen energy system will increase significantly - from 1.59 rubles per kWh in 2009 to 2.29 rubles per kWh in 2011.
The launch of the second stage of the power plant will allow increasing the energy generating capacity of Gazpromneft-Khantos to 96 MW and will fully meet the company's needs for electricity.

The Priobskoye field is Gazprom Neft's key asset, accounting for almost 18% of the company's production structure.
http://www.rian.ru/economy/20091219/200247288.html
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Downscaling of development objects as a method of enhanced oil recovery
At the Priobskoye field, three reservoirs are being developed jointly - AC10, AC11, AC12, and the permeability of the AC11 reservoir is an order of magnitude higher than the permeability of the AC10 and AC12 reservoirs. For the efficient development of reserves from the low-permeability AC10 and AC12 formations, there is no other alternative than the implementation of the ORRNEO technology, primarily in injection wells.
http://www.neftegaz.ru/science/view/428

The method of complex interpretation of well logging results used in OAO ZSK "TYUMENPROMGEOPHYSICS" in the study of terrigenous sections
http://www.tpg.ru/main.php?eng=&id=101&pid=85

Frolovskaya facies zone of the Neocomian of Western Siberia in the light of an assessment of the prospects for oil and gas potential
http://www.neftegaz.ru/science/view/486
http://www.oilnews.ru/magazine/2005-15-09.html
Literature

Regional stratigraphic schemes of the Mesozoic deposits of the West Siberian Plain. - Tyumen. - 1991.
Geology of oil and gas in Western Siberia // A.E. Kontorovich, I.I. Nesterov, V.S. Surkov and others - M .: Nedra. - 1975. - 680 p.
Catalog of stratigraphic breakdowns // Tr. ZapSibNIGNI.-1972.- Issue. 67.-313 p.
Argentovsky L.Yu., Bochkarev V.S. Stratigraphy of the Mesozoic deposits of the platform cover of the West Siberian Plate // Problems of Geology of the West Siberian Oil and Gas Province /Tr. ZapSibNIGNI.- 1968.- Issue 11.- 60 p.
Sokolovsky A.P., Sokolovsky R.A. Anomalous types of sections of the Bazhenov and Tutleym formations of Western Siberia // Bulletin of the subsoil user KhMAO.- 2002.-11.- P. 64-69.

Efficiency of oil field development
In Russia, both horizontal wells and hydraulic fracturing are used in sufficient volumes in low-permeability reservoirs, for example, in such as the Priobskoye field, where the permeability is only from 1 to 12 millidarcies and hydraulic fracturing is simply indispensable.
http://energyland.info/analytic-show-neft_gaz-neftegaz-52660

A new environmental scandal in the Khanty-Mansiysk Autonomous Okrug. Once again, the well-known company Rosekoprompererabotka, which became famous for polluting the Vakh River in the patrimony of TNK-BP, became its participant.
http://www.ura.ru/content/khanti/15-07-2010/articles/1036255339.html

Improving the Quality of Casing Cementing at the Yuzhno-Priobskoye Field
http://www.burneft.ru/archive/issues/2009-12/6

Thermal gas impact and fields of Siberia
http://www.energyland.info/analytic-show-52541
Thermogas method and Bazhenov formation
http://energyland.info/analytic-show-50375

Implementation of simultaneous injection at the Priobskoye field
http://www.oil-info.ru/arxivps/pdf/ORZ_N.pdf
Transfer of wells of the Priobskoye field to an adaptive control system for an electric submersible pump
http://www.elekton.ru/pdf/adaptive%20exploitation.pdf

Analysis of ESP failures in Russian fields
http://neftya.ru/?p=275

Interruptions during the formation of Neocomian clinoforms in Western Siberia
http://geolib.narod.ru/Journals/OilGasGeo/1993/06/Stat/01/stat01.html

Improving the technology of simultaneous-separate injection for multilayer fields
http://www.rogtecmagazine.com/eng/2009/09/blog-post_1963.html

LLC "Mamontovsky KRS"
Work at the fields of Mamontovsky, Maisky, Pravdinsky, Priobsky regions
http://www.mkrs.ru/geography.aspx

28.01.2010
Even before the New Year, environmental checks were completed at the two largest fields in Yugra, Samotlor and Priobskoye. Based on the results, disappointing conclusions were made: oil workers not only destroy nature, but also underpay at least 30 billion rubles a year to the budgets of various levels.
http://www.t-i.ru/article/13708/

"Siberian Oil", No. 4(32), April 2006. "There is room to move"
http://www.gazprom-neft.ru/press-center/lib/?id=685

BP/AMOCO Withdraws from Priobskoye Project, 1999-03-28
http://www.russiajournal.com/node/1250

Photo
Priobskoye field
http://www.amtspb.ru/map.php?objectID=15
"Priobskoye field, Khanty-Mansi Autonomous Okrug. SGK-Burenie company".
http://nefteyugansk.moifoto.ru/112353
Yuzhno-Priobskoye field

The Priobskoye oil and gas field is geographically located on the territory of the Khanty-Mansi Autonomous District of the Tyumen Region Russian Federation. The city closest to the Priobskoye field is Nefteyugansk (located 200 km east of the field).

The Priobskoye field was discovered in 1982. The field is characterized as multi-layer, low-productive. The territory is cut by the Ob River, swampy and mostly flooded during the flood period; here are spawning grounds for fish. As noted in the materials of the Ministry of Fuel and Energy of the Russian Federation submitted to the State Duma, these factors complicate the development and require significant financial resources to apply the latest highly efficient and environmentally friendly technologies.

The license for the development of the Priobskoye field belongs to a subsidiary of OAO Rosneft, the company Rosneft-Yuganskneftegaz.

According to specialists' calculations, the development of the deposit under the existing taxation system is unprofitable and impossible. Under the terms of the PSA, oil production over 20 years will amount to 274.3 million tons, state income - $48.7 billion.

The recoverable reserves of the Priobskoye field are 578 million tons of oil, gas - 37 billion cubic meters. The development period under the PSA is 58 years. Peak production level - 19.9 million tons. tons in the 16th year of development. Initial funding was planned at $1.3 billion. Capital costs - 28 billion dollars, operating costs - 27.28 billion dollars. Probable directions of oil transportation from the field are Ventspils, Novorossiysk, Odessa, Druzhba.

The possibility of joint development of the northern part of the Priobskoye field was discussed by Yugansneftegaz and Amoso in 1991. In 1993, Amoso took part in an international tender for the right to use the subsoil in the fields of the Khanty-Mansiysk Autonomous Okrug and was recognized as the winner of the competition for the exclusive right to become a foreign partner in the development of the Priobskoye field together with Yuganskneftegaz.

In 1994, Yuganskneftegaz and Amoso prepared and submitted to the government a draft agreement on production sharing and Tenico-economic and environmental justification of the project.

In early 1995, an additional feasibility study was submitted to the government, which was amended in the same year in the light of new data on the deposit.
In 1995 Central Commission for the development of oil and oil and gas fields of the Ministry of Fuel and Energy of the Russian Federation and the Ministry of Environmental Protection and natural resources The Russian Federation approved an updated scheme for the development of the field and the environmental part of the pre-project documentation.

On March 7, 1995, the then Prime Minister Viktor Chernomyrdin issued an order on the formation of a government delegation from representatives of the Khanty-Mansi Autonomous Okrug and a number of ministries and departments to negotiate a PSA in the development of the northern part of the Priobskoye field.

In July 1996, in Moscow, a joint Russian-American commission on economic and technical cooperation issued a joint statement on the priority of projects in the energy field, among which the Priobskoye field was specifically named. The joint statement indicates that both governments welcome the commitment to conclude a production sharing agreement for this project by the next meeting of the commission in February 1997.

At the end of 1998, a partner of Yuganskneftegaz in the project for the development of the Priobskoye field - American company Amoso was taken over by the British company British Petroleum.

In early 1999, BP/Amoso officially announced its withdrawal from participation in the Priobskoye field development project.

Ethnic history of the Priobskoye deposit

Since ancient times, the area of the deposit was inhabited by the Khanty. The Khanty developed complex social systems, called principalities and by the XI-XII centuries. they had large tribal settlements with fortified capitals, which were ruled by princes and defended by professional troops.

The first known contacts of Russia with this territory took place in the 10th or 11th century. At this time, trade relations between the Russians and the indigenous population of Western Siberia began to develop, which brought cultural changes to the life of the natives. Iron and ceramic household utensils and fabrics appeared and became a material part of the life of the Khanty. The fur trade acquired great importance as a means of obtaining these goods.

In 1581 Western Siberia was annexed to Russia. The princes were replaced by the tsarist government, and taxes were paid into the Russian treasury. In the 17th century, tsarist officials and servicemen (Cossacks) began to settle in this territory, and contacts between Russians and Khanty were further developed. As a result of closer contacts, Russians and Khanty began to adopt the attributes of each other's way of life. The Khanty began to use guns and traps, some, following the example of the Russians, took up the breeding of cattle and horses. The Russians borrowed some hunting and fishing techniques from the Khanty. The Russians acquired lands and fishing grounds from the Khanty, and by the 18th century most of the Khanty land had been sold to Russian settlers. Russian cultural influence expanded in the early 18th century with the introduction of Christianity. At the same time, the number of Russians continued to increase, and by the end of the 18th century, the Russian population in this area outnumbered the Khanty by five times. Most of the Khanty families borrowed knowledge from the Russians Agriculture, cattle breeding and horticulture.

The assimilation of the Khanty into Russian culture accelerated with the establishment of Soviet power in 1920. The Soviet policy of social integration brought a unified education system to the region. Khanty children were usually sent from families to boarding schools for a period of 8 to 10 years. Many of them, after graduating from school, could no longer return to the traditional way of life without having the necessary skills for this.

The collectivization that began in the 1920s had a significant impact on the ethnographic character of the territory. In the 50-60s, the formation of large collective farms began and several small settlements disappeared as the population united into larger settlements. By the 1950s, mixed marriages between Russians and Khanty became widespread, and almost all Khanty born after the 1950s were born in mixed marriages. Since the 1960s, as Russians, Ukrainians, Belarusians, Moldavians, Chuvashs, Bashkirs, Avars and representatives of other nationalities migrated to the region, the percentage of Khanty decreased even more. Currently, the Khanty make up a little less than 1 percent of the population of the Khanty-Mansi Autonomous Okrug.

In addition to the Khanty, the Mansi (33%), Nenets (6%) and Selkups (less than 1%) live in the territory of the Priobskoye deposit.

The Priobskoye oil field was discovered in 1982 by well No. 151 of Glavtyumengeologia.
Refers to the distributed subsoil fund. The license was registered by OOO Yuganskneftgegaz and NK Sibneft-Yugra in 1999. It is located on the border of the Salym and Lyaminsky oil and gas regions and is confined to the local structure of the same name in the Sredneobskaya oil and gas region. According to the reflecting horizon "B", the rise is contoured by an isoline - 2890 m and has an area of 400 km2. The foundation was opened by borehole No. 409 in the depth interval 3212 - 3340 m and is represented by metamorphoses. rocks of greenish color. Lower Jurassic deposits lie on it with angular unconformity and erosion. The main platform section is composed of Jurassic and Cretaceous deposits. The Paleogene is represented by the Danish Stage, Paleocene, Eocene and Oligocene. The thickness of the Quaternary deposits reaches 50 m. The bottom of permafrost is noted at a depth of 280 m, the roof - at a depth of 100 m. Within the field, 13 oil deposits of reservoir, reservoir-arch and lithologically screened types, which are associated with sand. yuteriva and barrel lenses. The reservoir is granular sandstones with interlayers of clays. Belongs to the unique class.

Priobskoye oil field

§1.Priobskoye oil field.

Priobskoe- the largest field in Western Siberia is administratively located in the Khanty-Mansiysk region at a distance of 65 km from Khanty-Mansiysk and 200 km from Nefteyugansk. It is divided by the Ob River into two parts - left and right bank. The development of the left bank began in 1988, the right bank - in 1999. Geological reserves are estimated at 5 billion tons. Proved and recoverable reserves are estimated at 2.4 billion tons. Opened in 1982. Deposits at a depth of 2.3-2.6 km. The density of the oil is 863-868 kg/m3 (the type of oil is medium, because it falls in the range of 851-885 kg/m 3 ), the content of paraffins is moderate (2.4-2.5%) and the sulfur content is 1.2-1 ,3% (belongs to the class of sulphurous, class 2 oil supplied to the refinery in accordance with GOST 9965-76). As of the end of 2005, there were 954 producing and 376 injection wells in the field. Oil production at the Priobskoye field in 2007 amounted to 40.2 million tons, of which Rosneft - 32.77, and Gazprom Neft - 7.43 million tons. The microelement composition of oil is an important characteristic of this type of raw material and carries various geochemical information about the age of oil, conditions of formation, origin and migration routes and is widely used for identifying oil fields, optimizing the search strategy for deposits, separating the production of jointly operated wells.

Table 1. Range and average value of microelement content of Priobskaya oil (mg/kg)

The initial flow rate of operating oil wells is from 35 tons / day. up to 180 t/day. The location of the wells is clustered. Oil recovery factor 0.35.

A cluster of wells is such an arrangement when the mouths are close to each other on the same technological platform, and the bottoms of the wells are in the nodes of the reservoir development grid.

Currently, most production wells are drilled in clusters. This is explained by the fact that cluster drilling of deposits can significantly reduce the size of the areas occupied by drilling and then production wells, roads, power lines, and pipelines.

This advantage is of particular importance during the construction and operation of wells on fertile lands, in reserves, in the tundra, where the disturbed surface layer of the earth is restored after several decades, in swampy areas, which complicate and greatly increase the cost of construction and installation work of drilling and operational facilities. Pad drilling is also necessary when it is required to open oil deposits under industrial and civil structures, under the bottom of rivers and lakes, under the shelf zone from the shore and overpasses. A special place is occupied by cluster construction of wells on the territory of the Tyumen, Tomsk and other regions of Western Siberia, which made it possible to successfully carry out the construction of oil and gas wells on backfill islands in a remote, swampy and populated region.

The location of the wells in the well pad depends on the terrain conditions and the proposed means of communication between the well pad and the base. Bushes that are not connected by permanent roads to the base are considered local. In some cases, bushes can be basic when they are located on highways. On local well pads, as a rule, wells are arranged in the form of a fan in all directions, which allows you to have maximum amount wells.

Drilling and auxiliary equipment is mounted in such a way that when the rig is moved from one well to another, the drilling pumps, receiving pits and part of the equipment for cleaning, chemical treatment and preparation of flushing liquid remain stationary until the construction of all (or part) of the wells on this pad is completed.

The number of wells in a cluster can vary from 2 to 20-30 or more. Moreover, the more wells in the pad, the greater the deviation of the bottoms from the wellheads, the length of the wellbore increases, the length of the wellbore increases, which leads to an increase in the cost of well drilling. In addition, there is a danger of meeting trunks. Therefore, it becomes necessary to calculate the required number of wells in a cluster.

A deep-pumping method of oil production is a method in which the rise of liquid from a well to the surface is carried out using rod and rodless pumping units. various types.
At the Priobskoye field, electric centrifugal pumps are used - a rodless deep-well pump, consisting of a multi-stage (50-600 stages) centrifugal pump located vertically on a common shaft, an electric motor (an asynchronous electric motor filled with dielectric oil) and a protector that serves to protect the electric motor from liquid ingress. The motor is powered by an armored cable, which is lowered along with the pump pipes. The frequency of rotation of the motor shaft is about 3000 rpm. The pump is controlled at the surface by means of a control station. The performance of the electric centrifugal pump varies from 10 to 1000 m3 of liquid per day with an efficiency of 30-50%.

The installation of an electric centrifugal pump includes underground and surface equipment.
The installation of a downhole electric centrifugal pump (ESP) has only a control station with a power transformer on the surface of the well and is characterized by the presence of high voltage in the power cable lowered into the well along with tubing. Highly productive wells with high reservoir pressure are operated by electric centrifugal pump units.

The field is remote, difficult to access, 80% of the territory is located in the floodplain of the Ob River and is flooded during the flood period. The field is characterized by a complex geological structure - a complex structure of sand bodies in terms of area and section, the layers are hydrodynamically weakly connected. Reservoirs of productive formations are characterized by:

Low permeability;

Low grit;

Increased clay content;

High dissection.

The Priobskoye field is characterized by a complex structure of productive horizons both in terms of area and section. The reservoirs of horizons AC10 and AC11 are medium and low productive, and AC12 are anomalously low productive. The geological and physical characteristics of the productive strata of the field indicate the impossibility of developing the field without actively influencing its productive strata and without using methods of production stimulation. This confirms the experience of developing the operational section of the left-bank part.

The main geological and physical characteristics of the Priobskoye field for assessing the applicability of various impact methods are:

1) depth of productive layers - 2400-2600 m,

2) deposits are lithologically shielded, the natural regime is elastic, closed,

3) the thickness of the layers AC 10, AC 11 and AC 12, respectively, up to 20.6, 42.6 and 40.6 m.

4) initial reservoir pressure - 23.5-25 MPa,

5) formation temperature - 88-90°С,

6) low permeability of reservoirs, average values according to the results

7) high lateral and vertical heterogeneity of formations,

8) reservoir oil viscosity - 1.4-1.6 mPa*s,

9) saturation pressure of oil 9-11 MPa,

10) oil of the naphthenic series, paraffinic and low-resinous.

Comparing the presented data with the known criteria for the effective use of reservoir stimulation methods, it can be noted that, even without a detailed analysis, thermal methods and polymer flooding (as a method of oil displacement from reservoirs) can be excluded from the above methods for the Priobskoye field. Thermal methods are used for deposits with high-viscosity oils and at depths up to 1500-1700 m. higher temperatures, expensive, special polymers are used).

Priobskoye oil field

§1. Priobskoye oil field. …………………………………
1.1. Properties and composition of oil
1.2. Initial well flow rate
1.3. Types and location of wells
1.4. Oil lifting method
1.5 Collector characteristics
1.6.MOON, KIN
§2. Preparation of oil for processing…………………………………….
§3. Primary oil refining of the Priobskoye field……….
§4. Catalytic cracking……………………………………………
§5.Catalytic reforming………………………………………….
Bibliographic list……………………………………………...

§1.Priobskoye oil field.

Table 1. Range and average value of microelement content of Priobskaya oil (mg/kg)

The initial flow rate of operating oil wells is from 35 tons / day. up to 180 t/day. The location of the wells is clustered. Oil recovery factor 0.35.

A cluster of wells is such an arrangement when the mouths are close to each other on the same technological platform, and the bottoms of the wells are in the nodes of the reservoir development grid.

The location of the wells in the well pad depends on the terrain conditions and the proposed means of communication between the well pad and the base. Bushes that are not connected by permanent roads to the base are considered local. In some cases, bushes can be basic when they are located on highways. On local well pads, as a rule, they are arranged in the form of a fan in all directions, which makes it possible to have the maximum number of wells on a well pad.

Drilling and auxiliary equipment is mounted in such a way that when the drilling rig is moved from one well to another, the drilling pumps, receiving pits and part of the equipment for cleaning, chemical treatment and preparation of flushing fluid remain stationary until the completion of the construction of all (or part) of the wells on this well pad.

A deep-pumping method of oil production is a method in which liquid is lifted from a well to the surface using various types of rod and rodless pumping units.
At the Priobskoye field, electric centrifugal pumps are used - a rodless deep-well pump, consisting of a multi-stage (50-600 stages) centrifugal pump located vertically on a common shaft, an electric motor (an asynchronous electric motor filled with dielectric oil) and a protector that serves to protect the electric motor from liquid ingress. The motor is powered by an armored cable, which is lowered along with the pump pipes. The frequency of rotation of the motor shaft is about 3000 rpm. The pump is controlled at the surface by means of a control station. The performance of the electric centrifugal pump varies from 10 to 1000 m3 of liquid per day with an efficiency of 30-50%.

Low permeability;

Low grit;

Increased clay content;

High dissection.

The main geological and physical characteristics of the Priobskoye field for assessing the applicability of various impact methods are:

1) depth of productive layers - 2400-2600 m,

2) deposits are lithologically shielded, the natural regime is elastic, closed,

3) the thickness of the layers AC 10, AC 11 and AC 12, respectively, up to 20.6, 42.6 and 40.6 m.

4) initial reservoir pressure - 23.5-25 MPa,

5) formation temperature - 88-90°С,

6) low permeability of reservoirs, average values according to the results

7) high lateral and vertical heterogeneity of formations,

8) reservoir oil viscosity - 1.4-1.6 mPa*s,

9) saturation pressure of oil 9-11 MPa,

10) oil of the naphthenic series, paraffinic and low-resinous.

Experience in the development of domestic and foreign fields shows that waterflooding is a fairly effective method of influencing low-permeability reservoirs with strict observance of the necessary requirements for the technology of its implementation. Among the main reasons causing a decrease in the efficiency of waterflooding of low-permeability formations are:

Deterioration of rock filtration properties due to:

Swelling of the clay components of the rock upon contact with the injected water,

Clogging of the collector with fine mechanical impurities in the injected water,

Precipitation of salt deposits in the porous medium of the collector during the chemical interaction of injected and formation water,

Reduction of reservoir coverage by flooding due to the formation of cracks around injection wells - rupture and their propagation in depth

Significant sensitivity to the nature of the wettability of rocks by the injected agent Significant reduction in reservoir permeability due to paraffin precipitation.

The manifestation of all these phenomena in low-permeability reservoirs causes more significant consequences than in high-permeability rocks.

To eliminate the influence of these factors on the flooding process, appropriate technological solutions are used: optimal well patterns and technological modes of well operation, injection of water of the required type and composition into the reservoirs, its appropriate mechanical, chemical and biological treatment, as well as the addition of special components to the water.

For the Priobskoye field, flooding should be considered as the main treatment method.

The use of surfactant solutions in the field was rejected, primarily due to the low efficiency of these reagents in low-permeability reservoirs.

For the Priobskoye field, alkaline flooding cannot be recommended for the following reasons:

The main one is the predominant structural and layered clay content of the reservoirs. Clay aggregates are represented by kaolinite, chlorite and hydromica. The interaction of alkali with clay material can lead not only to swelling of the clay, but also to the destruction of the rock. An alkaline solution of low concentration increases the swelling coefficient of clays by 1.1-1.3 times and reduces the permeability of the rock by 1.5-2 times compared to fresh water, which is critical for low-permeability reservoirs of the Priobskoye field. The use of solutions of high concentration (reducing the swelling of clays) activates the process of destruction of the rock.

The favorite technology of Russian oilmen is hydraulic fracturing: fluid is pumped into the well under pressure up to 650 atm. to form cracks in the rock. Cracks are fixed with artificial sand (proppant): it does not allow them to close. Through them, oil seeps into the well. According to LLC SibNIINP, hydraulic fracturing leads to an increase in oil inflow at the fields of Western Siberia from 1.8 to 19 times.

At present, oil producing companies, carrying out geological and technical activities, are mainly limited to the use of standard technologies for hydraulic fracturing (HF) using a polymer-based gelled aqueous solution. These solutions, as well as killing fluids, as well as drilling fluids, cause significant damage to the formation and the fracture itself, which significantly reduces the residual conductivity of the fractures, and, as a result, oil production. Formation and fracture clogging is of particular importance in fields with a current formation pressure of less than 80% of the initial one.

From the technologies used to solve this problem, technologies using a mixture of liquid and gas are distinguished:

Foamed (for example, nitrided) liquids with a gas content of less than 52% of the total volume of the mixture;

Foam hydraulic fracturing - more than 52% of gas.

After reviewing the technologies available on the Russian market and the results of their implementation, Gazpromneft-Khantos specialists chose foam fracturing and offered Schlumberger to conduct pilot work (PW). Based on their results, an assessment was made of the effectiveness of foam hydraulic fracturing at the Priobskoye field. Foam fracturing, like conventional fracturing, is aimed at creating a fracture in the formation, the high conductivity of which ensures the flow of hydrocarbons to the well. However, during foam hydraulic fracturing, due to the replacement (on average 60% of the volume) of a part of the gelled aqueous solution with compressed gas (nitrogen or carbon dioxide), the permeability and conductivity of fractures significantly increase, and, as a result, the degree of formation damage is minimal. In world practice, the highest efficiency of using foam fluids for hydraulic fracturing has already been noted in wells where reservoir energy is not enough to push the spent hydraulic fracturing fluid into the wellbore during its development. This applies to both new and existing well stock. For example, in selected wells of the Priobskoye field, reservoir pressure decreased to 50% of the original. During foam fracturing, the compressed gas that was injected as part of the foam helps to squeeze the spent fluid out of the formation, which increases the volume of the spent fluid and reduces the time

well development. For work at the Priobskoye field, nitrogen was chosen as the most versatile gas:

Widely used in the development of wells with coiled tubing;

Inert;

Compatible with hydraulic fracturing fluids.

After completion of the work, well completion, which is part of the "foam" service, was carried out by Schlumberger. A feature of the project was the implementation of pilot work not only in the new, but also in the existing well stock, in reservoirs with existing hydraulic fractures from the first jobs, the so-called re-fracturing. A crosslinked polymer system was chosen as the liquid phase of the foam mixture. The resulting foam mixture successfully helps to solve the problems of preserving the properties of the prize

combat zone. The polymer concentration in the system is only 7 kg/t of proppant, for comparison, in the wells of the nearest environment - 11.8 kg/t.

At present, we can note the successful implementation of foam hydraulic fracturing using nitrogen in the wells of the AC10 and AC12 formations of the Priobskoye field. Close attention was paid to the work in the existing well stock, since repeated hydraulic fracturing makes it possible to involve new layers and interlayers in the development that were not affected by the development earlier. To analyze the effectiveness of foam hydraulic fracturing, their results were compared with the results obtained from neighboring wells in which conventional hydraulic fracturing was performed. The reservoirs had the same oil-saturated thickness. The actual flow rate of liquid and oil in wells after foam hydraulic fracturing at an average pump intake pressure of 5 MPa exceeded the flow rate of neighboring wells by 20 and 50%, respectively. However, the working bottomhole pressure before the pump in the wells after foam hydraulic fracturing is on average 8.9 MPa, in the surrounding wells - 5.9 MPa. The recalculation of the well potential for equivalent pressure makes it possible to evaluate the effect of foam hydraulic fracturing.

Pilot work with foam hydraulic fracturing in five wells of the Priobskoye field showed the effectiveness of the method both in the existing and in the new well stock. Higher pump intake pressure in wells after the use of foam mixtures indicates the formation of high conductivity fractures as a result of foam hydraulic fracturing, which provides additional oil production from wells.

At present, the development of the northern part of the field is carried out by LLC RN-Yuganskneftegaz, owned by Rosneft, and the southern part by LLC Gazpromneft-Khantos, owned by Gazprom Neft.

By decision of the Governor KhMAO field was assigned the status of "Territory of a special procedure for subsoil use", which determined the special attitude of oilmen to the development of the Priobskoye field. The inaccessibility of reserves, the fragility of the ecosystem of the deposit, led to the use of the latest environmental technologies. 60% of the territory of the Priobskoye field is located in the floodplain of the Ob River; environmentally friendly technologies are used in the construction of well pads, pressure oil pipelines and underwater crossings.

Site objects located on the territory of the deposit:

Booster pumping stations - 3

Multiphase pumping station Sulzer - 1

· Cluster pumping stations for pumping the working agent into the formation - 10

Floating pumping stations - 4

Oil preparation and pumping workshops - 2

Oil separation unit (USN) - 1

The drilling cuttings processing plant on the right bank of the Priobskoye field produces silicate brick, which is used as a building material for the construction of roads, pad foundations, etc. To solve the problem of utilization of associated gas produced at the Priobskoye field, the first Gas Turbine Power Plant in Khanty-Mansi Autonomous Okrug was built at the Prirazlomnoye field, which provides electricity to the Priobskoye and Prirazlomnoye fields.

The power transmission line built across the Ob has no analogues, the span of which is 1020 m, and the diameter of the wire specially made in the UK is 50 mm.

§2. Preparation of oil for processing

Crude oil extracted from wells contains associated gases (50-100 m 3 /t), formation water (200-300 kg/t) and mineral salts dissolved in water (10-15 kg/t), which adversely affect transportation, storage and subsequent processing. Therefore, the preparation of oil for processing necessarily includes the following operations:

Removal of associated (dissolved in oil) gases or oil stabilization;

Oil desalination;

Dehydration (dehydration) of oil.

Oil stabilization - crude oil from the Ob region contains a significant amount of light hydrocarbons dissolved in it. During transportation and storage of oil, they can be released, as a result of which the composition of the oil will change. To avoid the loss of gas and with it light gasoline fractions and to prevent air pollution, these products must be extracted from oil before it is processed. A similar process of separating light hydrocarbons from oil in the form of associated gas is called stabilization oil. Stabilization of oil at the Priobskoye field is carried out by separation method directly in the area of its production at metering units.

Associated gas is separated from oil by multi-stage separation in gas separators, in which the pressure and oil flow rate are successively reduced. As a result, desorption of gases occurs, together with which volatile liquid hydrocarbons are removed and then condensed, forming "gas condensate". With the separation method of stabilization, up to 2% of hydrocarbons remain in the oil.

Desalting and dehydration oil- removal of salts and water from oil occurs at field oil treatment plants and directly at oil refineries (refineries).

Let's consider the device of electrodesalting installations.

Oil from the raw material tank 1 with the addition of a demulsifier and a weak alkaline or soda solution passes through the heat exchanger 2, is heated in the heater 3 and enters the mixer 4, in which water is added to the oil. The resulting emulsion successively passes through electric dehydrators 5 and 6, in which the bulk of water and salts dissolved in it are separated from the oil, as a result of which their content is reduced by 8-10 times. The desalinated oil passes through the heat exchanger 2 and, after cooling in the refrigerator 7, enters the collector 8. The water separated in the electric dehydrators settles in the oil separator 9 and is sent for purification, and the separated oil is added to the oil supplied to the CDU.

The processes of desalination and dehydration of oil are associated with the need to break emulsions that water forms with oil. At the same time, emulsions are destroyed in the fields natural origin, formed in the process of oil production, and at the plant - artificial emulsions obtained by repeated washing of oil with water to remove salts from it. After treatment, the content of water and metal chlorides in oil is reduced at the first stage to 0.5-1.0% and 100-1800 mg/l, respectively, and at the second stage to 0.05-0.1% and 3-5 mg/l, respectively. l.

To accelerate the process of breaking emulsions, it is necessary to subject the oil to other measures of influence aimed at coarsening water droplets, increasing the density difference, and reducing the viscosity of the oil.

In the Ob oil, the introduction of a substance (demulsifier) into the oil is used, due to which the separation of the emulsion is facilitated.

And for oil desalination, oil is washed with fresh fresh water, which not only washes out salts, but also has a hydromechanical effect on the emulsion.

§3. Primary oil refining of the Priobskoye field

Oil is a mixture of thousands of different substances. The complete composition of oils even today, when the most sophisticated means of analysis and control are available: chromatography, nuclear magnetic resonance, electron microscopes - far from all these substances are completely determined. But, despite the fact that the composition of oil includes almost all the chemical elements of the table D.I. Mendeleev, its basis is still organic and consists of a mixture of hydrocarbons of various groups that differ from each other in their chemical and physical properties. Regardless of complexity and composition, oil refining begins with primary distillation. Usually, distillation is carried out in two stages - with a slight excess pressure close to atmospheric and under vacuum, while using tube furnaces to heat the raw materials. Therefore, installations for primary oil refining are called AVT - atmospheric-vacuum tubulars.

The oils of the Priobskoye field have a potentially high content of oil fractions, therefore, the primary oil refining is carried out according to the fuel-oil balance and is carried out in three stages:

Atmospheric distillation to obtain fuel fractions and fuel oil

Vacuum distillation of fuel oil to obtain narrow oil fractions and tar

Vacuum distillation of a mixture of fuel oil and tar to obtain a broad oil fraction and a heavy residue used for the production of bitumen.

The distillation of Priobskaya oil is carried out at atmospheric tubular units according to the scheme with single evaporation, i.e. with one complex distillation column with side stripping sections - this is the most energetically advantageous, because Priobskaya oil fully meets the requirements when using such an installation: a relatively low gasoline content (12-15%) and the yield of fractions up to 350 0 С is not more than 45%.

Crude oil, heated by hot flows in heat exchanger 2, is sent to electric dehydrator 3. From there, desalinated oil is pumped through heat exchanger 4 to furnace 5 and then to distillation column 6, where it is evaporated once and separated into the required fractions. In the case of desalted oil, there is no electric dehydrator in the schemes of installations.

With a high content of dissolved gas and low-boiling fractions in oil, its processing according to such a scheme of single evaporation without preliminary evaporation is difficult, since increased pressure is created in the feed pump and in all devices located in the circuit upstream of the furnace. In addition, this increases the load of the furnace and distillation column.

The main purpose of vacuum distillation of fuel oil is to obtain a wide fraction (350 - 550 0С and above) - raw materials for catalytic processes and distillates for the production of oils and paraffins.

The fuel oil is pumped by a pump through a system of heat exchangers into a tubular furnace, where it is heated to 350°-375°, and enters a distillation vacuum column. The vacuum in the column is created by steam jet ejectors (residual pressure 40-50 mm). Water vapor is fed into the bottom of the column. Oil distillates are taken from different plates of the column, pass through heat exchangers and coolers. From the bottom of the column, the remainder is discharged - tar.

Oil fractions isolated from oil are purified with selective solutions - phenol or furfural to remove some of the resinous substances, then dewaxed using a mixture of methyl ethyl ketone or acetone with toluene to lower the pour point of the oil. The processing of oil fractions is completed by post-treatment with bleaching clays. Recent oil technologies use hydrotreating processes instead of clays.

Material balance of atmospheric distillation of the Ob oil:

§4.Catalytic cracking

Catalytic cracking is the most important oil refining process, which significantly affects the efficiency of the refinery as a whole. The essence of the process lies in the decomposition of hydrocarbons that are part of the raw material (vacuum gas oil) under the influence of temperature in the presence of a zeolite-containing aluminosilicate catalyst. The target product of the KK unit is a high-octane component of gasoline with an octane number of 90 points or more, its yield is from 50 to 65%, depending on the raw materials used, the technology and regime used. The high octane number is due to the fact that catalytic cracking also causes isomerization. The process produces gases containing propylene and butylenes, which are used as raw materials for petrochemicals and the production of high-octane gasoline components, light gas oil - a component of diesel and heating fuels, and heavy gas oil - a raw material for the production of soot, or a component of fuel oils.
The average capacity of modern plants is from 1.5 to 2.5 million tons, however, there are plants with a capacity of 4.0 million tons at the plants of the world's leading companies.
The key section of the plant is the reactor-regenerator unit. The unit includes a furnace for heating raw materials, a reactor in which cracking reactions take place directly, and a catalyst regenerator. The purpose of the regenerator is to burn out the coke formed during cracking and deposited on the catalyst surface. The reactor, regenerator and feedstock input unit are connected by pipelines through which the catalyst circulates.
The capacity of catalytic cracking at Russian refineries is currently clearly not enough, and it is through the introduction of new units that the problem with the predicted shortage of gasoline is being solved.

§4. Catalytic reforming

The development of gasoline production is associated with the desire to improve the main operational property of the fuel - the detonation resistance of gasoline, estimated by the octane number.

Reforming is used to simultaneously obtain a high-octane base component of motor gasolines, aromatic hydrocarbons and hydrogen-containing gas.

For Priobskoy oil, the reforming is carried out on the fraction that boils away in the range of 85-180 0 C, and an increase in the end of the boiling point promotes coke formation and is therefore undesirable.

Preparation of reforming feedstock - rectification to separate fractions, hydrotreatment to remove impurities (nitrogen, sulfur, etc.) that poison the process catalysts.

The reforming process uses platinum catalysts. The high cost of platinum predetermined its low content in industrial reforming catalysts and, consequently, the need for its efficient use. This is facilitated by the use of alumina as a carrier, which has long been known as the best carrier for aromatization catalysts.

It was important to turn the alumina-platinum catalyst into a bifunctional reforming catalyst, on which the whole complex of reactions would proceed. To do this, it was necessary to impart the necessary acidic properties to the support, which was achieved by treating alumina with chlorine.

The advantage of a chlorinated catalyst is the ability to control the chlorine content in the catalysts, and hence their acidity, directly under operating conditions.

With the transition of existing reformers to polymetallic catalysts, performance indicators increased, because. their cost is lower, their high stability allows the process to be carried out at a lower pressure without fear of coking. When reforming on polymetallic catalysts, the content of the following elements in the feedstock should not exceed 1 mg/kg of sulfur, 1.5 mg/kg of nickel, and 3 mg/kg of water. In terms of nickel, Priobskaya oil is not suitable for polymetallic catalysts; therefore, aluminum-platinum catalysts are used in reforming.

Typical material balance of the reforming fraction is 85-180 °C at a pressure of 3 MPa.

Bibliographic list

1. Glagoleva O.F., Kapustin V.M. Primary oil refining (ch1), KolosS, M.: 2007

2. Abdulmazitov R.D., Geology and development of the largest oil and oil and gas fields in Russia, JSC VNIIOENG, M.: 1996

3. http://ru.wikipedia.org/wiki/Priobskoye_oil_field - about Priobye in Wikipedia

4. http://minenergo.gov.ru - Ministry of Energy of the Russian Federation

5. Bannov P.G., Processes of oil refining, TsNIITEneftekhim, M.: 2001

		©site
A country	Russia
Region	Khanty-Mansi Autonomous Okrug
Location	65 km from the city of Khanty-Mansiysk and 200 km from the city of Nefteyugansk, floodplain of the Ob River
Oil and gas province	West Siberian oil and gas province
Coordinates	61°20′00″ s. sh. 70°18′50″ E d.
Mineral resource	Oil
Characteristics of raw materials	Density 863 - 868 kg / m 3; Sulfur content 1.2 - 1.3%; Viscosity 1.4 - 1.6 mPa s; Paraffin content 2.4 - 2.5%
Rank	Unique
Status	Development
Opening	1982
Commissioning	1988
Subsoil user company	Northern part - OOO RN-Yuganskneftegaz (PJSC NK Rosneft); Southern part - LLC "Gazpromneft - Khantos" (PJSC "Gazprom Neft"); Verkhne-Shapshinskiy and Sredne-Shapshinskiy license areas - OAO NAK AKI OTYR (PJSC NK RussNeft)
Geological reserves	5 billion tons of oil

Priobskoye oil field- a giant Russian oil field located on the territory of the Khanty-Mansiysk Autonomous Okrug. Considered the most large deposit in Russia by current reserves and level of oil production.

General information

The Priobskoye field belongs to the West Siberian oil and gas province. It is located on the border of the Salym and Lyaminsky oil and gas regions, 65 km from the city of Khanty-Mansiysk and 200 km from the city of Nefteyugansk, and is confined to the local structure of the same name in the Sredneobskaya oil and gas region.

About 80% of the field area is located in the floodplain of the Ob River, which, crossing the site, divides it into 2 parts: left-bank and right-bank. Officially, the sections of the left and right banks of the Ob are called the South and North Priobskoye deposits, respectively. During the period of floods, the floodplain is regularly flooded, which, along with the complex geological structure, makes it possible to characterize the field as difficult to access.

Stocks

The geological reserves of the field are estimated at 5 billion tons of oil. Hydrocarbon deposits were found at a depth of 2.3-2.6 km, the thickness of the layers reaches from 2 to 40 meters.

The oil of the Priobskoye field is low-resinous, the content of paraffins is at the level of 2.4-2.5%. They are characterized by medium density (863-868 kg/m³), but high sulfur content (1.2-1.3%), which requires its additional purification. The viscosity of oil is about 1.4-1.6 mPa*s.

Opening

The Priobskoye field was discovered in 1982 by well No. 151 of Glavtyumengeologia.
Operational oil production began in 1988 on the left bank from well No. 181-R by the flowing method. The development of the right bank began later, in 1999.

Development

Currently, the development of the northern part of the Priobskoye oil field (SLT) is being carried out by RN-Yuganskneftegaz LLC, owned by Rosneft, and the southern part (YULT) is being developed by Gazpromneft-Khantos LLC (a subsidiary of Gazprom Neft PJSC).

In addition, relatively small Verkhne-Shapshinskiy and Sredne-Shapshinskiy license blocks are allocated in the south of the field, the development of which since 2008 has been carried out by JSC NAK AKI OTYR, owned by PJSC NK RussNeft.

Development Methods

Due to the specific conditions of the occurrence of hydrocarbons and the geographical location of the deposits, production at the Priobskoye oil field produced by hydraulic fracturing, which significantly reduces operating costs and capital investment.

In November 2016, the largest hydraulic fracturing of an oil reservoir in Russia was performed at the field - 864 tons of proppant were pumped into the reservoir. The operation was carried out jointly with specialists from Newco Well Service.

Current production level

The Priobskoye field is rightfully considered the largest oil field in Russia in terms of reserves and production volumes. To date, about 1,000 production and almost 400 injection wells have been drilled on it.

In 2016, the field provided 5% of all oil production in Russia, and in the first five months of 2017, it produced more than 10 million tons of oil.