Investigation of the Mechanisms of Occurrence of Hazardous Natural Phenomena during the Development of Oil and Gas Fields on the Shelf of the Arctic and Subarctic Seas


Abstract    Under the conditions of Arctic, a number of hazardous natural phenomena was established: shallow gas («gas jets and pockets» in the upper part of the oil and gas field section), gas hydrates, porkmarks-craters, regressive depression of the seabed.

The fact of gas accumulations occurrence, as well as the degree of their influence on the final indices of the development of oil and gas field, should be considered both at the prospecting and exploration stage and at the hydrocarbon extraction stage. Moreover, the assessment of all possible risks in the Arctic climatic conditions is of a particular importance.

The analysis is given concerning engineering geological surveys on the Sakhalin shelf of the Okhotsk Sea, and risk assessment criteria were developed for drilling operations, ranking was performed related to the amplitudes of 2D seismic anomalies in the upper part of the cross-section of Kirinsky and South-Kirinsky gas condensate fields, indicating the degree of gas saturation of the sediments and level of hazard.

To ensure safe drilling of wells on the shelf in the areas with shallow gas, it is proposed to perform: identification and mapping of shallow gas accumulations at the objects of sea shelf based on the data of reprocessing and interpretation of the results of seismic exploration and engineering-geotechnical surveys; development of the well drilling technology and well design in gas accumulation conditions in the upper part of the cross-section of the offshore fields, including performance of the calculations of the exploration, wildcat and production well designs.

Several types of influence on the deposit are considered: local rounded deepening (porkmarks), regressive depression of the seabed surface of gas condensate fields that violate the natural equilibrium state of the subsoil resources, creating prerequisites for the occurrence of deformations of the rock massif and the seabed surface. The main and most dangerous forms of these consequences are: depressurization of the bore-hole annulus of wells, deformation of the underwater communications, possible failure of the production platform fixing anchors.

At present, the forecast of these negative phenomena and the reduction of the scope of their consequences are a current problem for the specialists.

Dzyublo A.D., Shnip O.A., Altukhov E.E., Tscherbakova A.Iu. Lithologic-geophysical characteristics for the Daginsk horizon rocks of the South-Kirinskoe field. Geologiya nefti i gaza = Oil and Gas Geology. 2016. № 4. pp. 39–46 (In Russ.).
Dzyublo A.D., Sidorov V.V. Information and analytical systems for complex data processing as a means of improving efficiency of the geological exploration works on the continental shelf. Gazovaya promyshlennost = Gas Industry. 2015. № 1 (717). pp. 79–82 (In Russ.).
Bogoyavlensky V.I., Bogoyavlensky I.V., Bogoyavlenskaya O.V., Nikonov R.A. Perspectives of petroleum potential of sedimentary basins and basement of the Circum-Arctic Region. Geologiya nefti i gaza = Oil and Gas Geology. 2017. № 5. pp. 5–20. (In Russ.).
Petrenko V.E., Oganov G.S., Sviridova T.A. Technical and technological aspects of well planning and drilling in the presence of shallow gas on the shelf of the sea of Okhotsk. Vestnik Assotsiatsii burovykh podryadchikov = Bulletin of the Association of Drilling Contractors. 2016. № 4. pp. 29–35. (In Russ.).
Dmitrievskiy A.N., Balanyuk I.E. Gas hydrates of the seas and oceans — the source of future hydrocarbons. Мoscow: OOO «IRTs Gazprom». 2009. 416 p. (In Russ.).
Laptev B.V. Gas-Hydrates and their Possible Role in the Natural Gas-Dynamic Events. Bezopasnost truda v promyshlennosti = Occupational Safety in Industry. 2015. № 11. pp. 42–45. (In Russ.).
Giustiniani M., Tinivella U., Sauli C., Vedova B.D. Distribution of the gas hydrate stability zone in the Ross Sea, Antarctica. Andean Geology. 2017. Vol. 45. № 1. pp. 78–86. DOI:
Marín-Moreno H., Giustiniani M., Tinivella U., Piñero E. The challenges of quantifying the carbon stored in Arctic marine gas hydrate. Marine and Petroleum Geology. 2016. Vol. 71. pp. 76–82. DOI: 10.1016/j.marpetgeo.2015.11.014
Bogoyavlensky V., Kishankov A., Yanchevskaya A., Bogoyavlensky I. Forecast of Gas Hydrates Distribution Zones in the Arctic Ocean and Adjacent Offshore Areas. Geosciences. 2018. Vol. 8. № 12. pp. 1–17. DOI:
Petrenko V.E., Oganov G.S., Sviridova T.A. Design solutions for the construction of wells on the sea shelf in the presence of shallow gas. Proektirovanie i razrabotka neftegazovykh mestorozhdeniy = Design and Development of oil and gas fields. 2017. № 1. pp. 42–47. (In Russ.).
Bogoyavlensky V.I., Mazharov A.V., Mazharov A.V., Bogoyavlensky I.V. Gas emissions from the Yamal Peninsula permafrost zone. Burenie i neft = Drilling and oil. 2015. № 7–8. pp. 8–13. (In Russ.).
Bogoyavlensky V.I. Oil and gas emissions on land and offshore areas of the Arctic and World oceans. Burenie i neft = Drilling and oil. 2015. № 6. pp. 4–10. (In Russ.).
Dzyublo A.D., Radin A.I. Regressive depression of seabed in Shtokman gas and condensate field. Vestnik Assotsiatsii burovykh podryadchikov = Bulletin of the Association of Drilling Contractors. 2013. № 4. pp. 20–30. (In Russ.).
Andreassen K., Hubbard A., Winsborrow M., Patton H., Vadakkepuliyambatta S., Plaza-Faverola A., Gudlaugsson E., Serov P., Deryabin A., Mattingsdal R., Mienert J., Bünz S. Massive blow-out craters formed by hydrate-controlled methane expulsion from the Arctic seafloor. Science. 2017. Vol. 356. № 6341. pp. 948–953. DOI: 10.1126/science.aal4500
Maksimov V.M., Tupysev M.K., Kulpin L.G., Pronyushkina S.M. Natural and technology hazards during the hydrocarbon field developing of the Arctic shelf and the underwater gas transportation. Burenie i neft = Drilling and oil. 2015. № 1. pp. 24–29. (In Russ.).
DOI: 10.24000/0409-2961-2019-4-69-77
Year: 2019
Issue num: April
Keywords : risks oil and gas fields the Arctic shelf shallow gas seeps seabed porkmarks-craters gas hydrates
  • A.D. Dzyublo
    A.D. Dzyublo
    Dr. Sci. (Geol.-Mineral.), Prof., Gubkin Russian State University of Oil and Gas, Moscow, Russia
  • Voronova V.V.
    Voronova V.V.
    Cand. Sci. (Eng.), Assistant Prof. Gubkin Russian State University of Oil and Gas, Moscow, Russia