Environmental consequences of oil and gas impact on wetlands of the Surgut marshlands on the example of the Konitlor group of fields

UDK: 502.6: 622.276.5
DOI: 10.24887/0028-2448-2021-12-148-151
Key words: licensed area, hydrocarbons fields, Surgut marshlands, ecological monitoring, surface waters, bottom clays, soils
Authors: A.Yu. Solodovnikov (Tyumen Branch of SurgutNIPIneft, Surgutneftegas PJSC, RF, Tyumen), A.A. Khattu (Tyumen Branch of SurgutNIPIneft, Surgutneftegas PJSC, RF, Tyumen)

The extraction of hydrocarbons and their transportation from the fields is accompanied by the impact on all components of the natural environment. This impact is manifested both in a change in the external appearance of the surrounding landscapes and in the initial geochemical setting. At the same time, the strength of the impact and its consequences largely depend on the natural features of the area. The Middle Ob region, where most of the hydrocarbons of Surgutneftegas PJSC are produced, is characterized by a high degree of swampiness and lagging (more than 50%). However, within this territory there is an even lower and humid place, where the proportion of wetlands exceeds 80 and even 90%. This area was called the Surgut lowland, or Surgut marshlands. In such extremely difficult conditions there are many developed objects, including the Konitlor group of fields. The extraction of hydrocarbons in the swampy and lakeside areas places higher demands on the subsoil user to prevent environmental pollution. Owing to the observance of industrial and environmental safety requirements, competent organization of production, applied environmental protection measures, in the Konitlor group of fields, despite the emergencies, made it possible to prevent environmental pollution. This is confirmed not only by the company's monitoring studies, but also by remote sensing of the territory of the Khanty-Mansiysk Autonomous District - Yugra, which is carried out by the Department of Subsoil Use and Natural Resources of the autonomous district. At the same time, the most effective tool that can be used to assess the current state of natural environments and to determine the consequences of the impact of oil and gas production on the environment are monitoring studies. In Surgutneftegas PJSC, they are carried out at all fields and subsoil areas in accordance with the license agreement on the terms of subsoil use.

References

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4. Resolution of the Government of the Khanty-Mansi Autonomous Okrug-Yugra no. 485-P of 23.12.11. “O sisteme nablyudeniya za sostoyaniem okruzhayushchey sredy v granitsakh litsenzionnykh uchastkov na pravo pol'zovaniya nedrami s tsel'yu dobychi nefti i gaza na territorii Khanty-Mansiyskogo avtonomnogo okruga-Yugry” (On the system for monitoring the state of the environment within the boundaries of licensed areas for the right to use subsoil for the purpose of oil and gas production in the Khanty-Mansiysk Autonomous Okrug-Yugra).

5. Solodovnikov A.Yu., Khattu A.A., The ecological influence of long-term oilfields on water objects on the example of Konitlorskoye oilfield (In Russ.), Neftyanoe khozyaystvo = Oil Industry, 2016, no. 3, pp. 126–128.

6. Resolution of the Government of the Autonomous Okrug No. 441-P dated 10.11.04. “Predel'no dopustimyy uroven' (PDU) soderzhaniya nefti i nefteproduktov v donnykh otlozheniyakh poverkhnostnykh vodnykh ob"ektov na territorii Khanty-Mansiyskogo avtonomnogo okruga-Yugry” (Maximum permissible level (MPL) for the content of oil and oil products in bottom sediments of surface water bodies on the territory of the Khanty-Mansiysk Autonomous Okrug-Yugra).



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