No.4(44),2025 PP.1-14

Neftyanaya provintsiya No. 4(44), 2025

Rationale for supplementary exploration of a deep horizon in the Russian Far East

V.А. Vanin, Т.М. Malysheva, I.V. Panchenko, М.U. Plaksina
DOI: https://doi.org/10.25689/NP.2025.4.1-14

Abstract

A giant oil and gas field A is located on the shelf of the Sea of Okhotsk. The vertical productivity of several layers that are under development has been proven. The deepest well A-1 at the field penetrated only a part of the Okobykay formation of the Lower Miocene, which is a thick regional seal for hydrocarbon (HC) reservoirs of Dagi horizon in a number of other fields in the region. The oil and gas potential of Dagi formation has been confirmed both onshore and offshore in the Sea of Okhotsk. The prospects of Dagi formation (N1dg) of the considered field A have been estimated by several authors over the years, but the opinions on this issue differ, including due to the influence of gas from the overlying reservoirs on the quality of seismic signals related to the target Dagi interval. The article describes a complex of available geological and geophysical information, which made it possible to find a set of arguments in favor of the Dagi prospecting target. It is recommended for additional exploration by drilling.

Key words:

Dagi formation, regression, delta progradation, graben, katagenesis, net-reservoir formation, amplitude anomaly

References

1. Kharakhinov V.V. Neftegazovaya geologiya Sakhalinskogo regiona [Petroleum geology of Sakhalin region]. Moskva: Izd-vo “Nauchny Mir” [Moscow: Scientific World Publishing House], 2010. - fig. 7, fig. 34. (in Russian)

2. Zakharov E.V., Tolstikov A.V., Kalita M.A. Osnovnye resultaty poiskovyh rabot v Bloke IV i geologicheskoe obosnovaniye ocherednosti provedeniya poiskovo-razvedochnyh rabot v Blokah I i II proekta Sakhalin-3. [Main results of prospecting work at Block IV and geologic substantiation of sequence of prospecting and survey works at Blocks I and II under the Prject Sakhalin -3]. VNIIGAZ Journal. [VNIIGAZ Journal], 2013 - No. 3 (14). p. 58-66. (in Russian)

3. Bondarev А.V., Kerimov V.Yu., Sizikov Е.А. Ochagi generatsii uglevodorodov v prisakhalinskom shelfe Okhotskogo morya [Source kitchen of Sakhalin-Okhotsk shelf]. Moskva: XXI Gubkinskiye chteniya [Moscow: XXI Gubkin Readings], 2016. - p. 11-17. (in Russian)

4. Lomtev V.L., Litvinova А.V. [New data on the structure of the offshore margin of the Northern Sakhalin]. Moskva: Geodinamika i Tektonofizika [Moscow: Geodynamics and Tectonophysics]. 2011. - V2, No.1. p. 83–94. (in Russian)

5. Shegai V.I. Aktualizatsiya zonalnoy geologicheskoy modeli severo-vostochnogo shelfa ostrova Sakhalin [Updating a zonal static model of the northeastern shelf of Sakhalin Island]. Moskva: Dissertatsiya na soiskaniye uchenoy stepeni kandidata geologo-mineralogicheskih nauk [Moscow: Ph.D. thesis]. 2022 - p. 64. (in Russian)

6. Zhukov V.S., Churikov Yu.M., Motorygin V.V. Izmeneniya struktury porovogo prostranstva kollektorov daginskogo gorizonta pri modelirovanii plastovyh usloviy [Modification of porous space structure in reservoirs of Dagi horizon at transition from atmospheric conditions to in-situ ones]. Moskva: Vesti Gazovoy Nauki [Moscow: VNIIGAZ Journal No. 3 (31)]. 2017 - p. 238-246. (in Russian)

7. Izyurova E.S., Izyurova A.D., Postnikova O.V. Vtorichnyye preobrazovaniya terrgennyh porod-kollektorov [Secondary transformations of terrigenous reservoir rocks]. Moskva Uchebnoye posobiye RGU im. Gubkina [Moscow: Educational guidance: Gubkin Oil and Gas University]. 2024. - p. 32. (in Russian)

8. Wikipedia: https://ru.wikipedia.org/wiki/Geothermal gradient (in Russian)

9. Jafarov I.S., Kerimov V.Yu., Shilov G.Ya. Shelf, ego izucheniye i znacheniye dlya poiskov i razvedki skopleniy nefti i gaza [The shelf, its study and significance for prospecting and exploration of oil and gas accumulations]. St. Petersburg: Nedra. [St. Petersburg: Nedra]. 2005. - p. 221. (in Russian)

Authors

V.A. Vanin, Head manager, «RN-Geology Research Development» LLC
79/1, Osipenko St., 625002, Tyumen, Russia
E-mail: VAVanin@rn-gir.rosneft.ru

T.M. Malysheva, Head specialist, «RN-Geology Research Development» LLC
79/1, Osipenko St., 625002, Tyumen, Russia
E-mail: tmmalysheva@tnnc.rosneft.ru

I.V. Panchenko, specialist, «RN-Geology Research Development» LLC
79/1, Osipenko St., 625002, Tyumen, Russia
E-mail: IV_Panchenko2@tnnc.rosneft.ru

M.U. Plaksina, specialist, «RN-Geology Research Development» LLC
79/1, Osipenko St., 625002, Tyumen, Russia
E-mail: MU_Plaksina3@tnnc.rosneft.ru

For citation:

V.А. Vanin, Т.М. Malysheva, I.V. Panchenko, М.U. Plaksina Obosnovaniye dorazvedki glubokogo gorizonta na Dalnem Vostoke Rossii [Rationale for supplementary exploration of a deep horizon in the Russian Far East]. Neftyanaya Provintsiya, No. 4(44), 2025. pp. 1-14. DOI https://doi.org/10.25689/NP.2025.4.1-14. EDN GJRFCN (in Russian)

© Non-governmental organization Volga-Kama Regional Division of the Russian Academy of Natural Science, 2015-2025 All the materials of the journal are available under the Creative Commons Attribution 4.0 License (https://creativecommons.org/licenses/by/4.0/)

Rationale for supplementary exploration of a deep horizon in the Russian Far East V.А. Vanin, Т.М. Malysheva, I.V. Panchenko, М.U. Plaksina DOI: https://doi.org/10.25689/NP.2025.4.1-14

Key words: Dagi formation, regression, delta progradation, graben, katagenesis, net-reservoir formation, amplitude anomaly

Rationale for supplementary exploration of a deep horizon in the Russian Far East

V.А. Vanin, Т.М. Malysheva, I.V. Panchenko, М.U. Plaksina
DOI: https://doi.org/10.25689/NP.2025.4.1-14

Key words:

Dagi formation, regression, delta progradation, graben, katagenesis, net-reservoir formation, amplitude anomaly