Место работы автора, адрес/электронная почта: ФИЦ "Якутский научный центр СО РАН", Институт проблем нефти и газа СО РАН ; 677007, г. Якутск, ул. Автодорожная, 20 ; e-mail: rose_sevos@mail.ru ; http://ipng.ysn.ru
Область научных интересов: Геология нефти и газа, региональная геология, поиски и разведка нефтяных и газовых месторождений
ID Автора: SPIN-код: 3827-1218, РИНЦ AuthorID: 927773
Количество страниц: 16 с.
As a result of a thorough analysis of geophysics data and deep drilling, it was established that the most likely zones for the discovery of new oil and gas reserves are localized in the north and center of the Pre-Verkhoyansk trough, as well as in the southeastern part of the Siberian platform along the Aldan-Maya trough. The high content of hydrocarbons in the formation waters of productive layers indicates large-scale processes of gas formation and active vertical and horizontal migration, which contributes to the creation of a favorable environment for the formation of free gas. Particular attention is drawn to deposits in Jurassic deposits, formed due to the secondary capture of gas ows during intense vertical and inter-reservoir movement. The key reservoirs for future discoveries are the sandy-clayey Permian deposits under the clayey strata of the Lower Triassic Nedzhelin Formation. Most proven gas reserves are associated with large, high-amputation swell-like uplifts. Modern geological structures and the hydrodynamic potential of the region determine optimal conditions for the migration of hydrocarbons. It is proposed to designate the Kitchanskaya, Yakutskaya and Munskaya zones of expected oil and gas accumulation as priority objects in the central part of the Pre-Verkhoyansk trough and adjacent territories of the Vilyui syneclise. The article examines the oil and gas potential prospects of the Aldan-Maya trough. Here, buried landforms play a key role in geological structures and determine the prospects for the generation and migration routes of hydrocarbons, in the structure of lithological-stratigraphic traps. The industrial signi cance of deposits contained in Riphean sediments has been con rmed in adjacent territories, in particular within the Berezovskaya depression.
Перспективы нефтегазоносных территорий восточного обрамления Сибирской платформы по материалам геологоразведочных работ последних лет / А. В. Погодаев, Р. Ф. Севостьянова, М. И. Слепцова [и др.] // Вестник Северо-Восточного федерального университета им. М. К. Аммосова. - 2024. - N 4 (36). - С. 33-48. - DOI: 10.25587/2587-8751-2024-4-33-48
DOI: 10.25587/2587-8751-2024-4-33-48
Количество страниц: 6 с.
This article contains data on the nature and level of study of the territories in which the north-eastern part of the Sakha Republic is located, which are potentially oil and gas bearing. In 1979-1992, seismic exploration of oil and gas was carried out in the Tastakh trough, the Zyryanka depression by JSC Yakutskgeofizika. The section of the Tastakh trough includes strata of terrigenous rocks of lithological unconstrained composition. Its capacity is 2.5-4.5 kilometers. The paper describes reflecting horizons based on Neogene-Quaternary, Jurassic-Cretaceous deposits. In addition, during the research, it was found that the Lower Cretaceous sediments present in the Tompon depression are divided by the Tomporuk-Kitchan zone of thrust divisions of the Late Cretaceous stage of activation of the Verkhoyano-Kolyma region. Upper Jurassic volcanogenic sedimentary rocks, Lower Cretaceous coal-bearing deposits are contained in the Zyryanka depression at 6 and 5 thousand meters, respectively. This article contains an opportunity for the allocation of time intervals, interpretation of sedimentary synchronous complexes of deflections, depressions, shelf. Seismic materials in these territories have a quality that can be recycled. The evidence of the need for this procedure appears during discussions on the topic of geological development, the structure of the mountain-folded Verkhoyano-Kolyma region, as well as the shelf that adjoins it. These data are confirmation of the presence of oil and gas in these territories. The work was carried out with the scientific equipment of the Center for Collective Use of the Federal research center ҺYakut Scientific Center of the Siberian Branch of the Russian Academy of Sciencesһ under grant No. 13.TsKP.21.0016. Support was received in the form of funds under the State Assignment from the Ministry of Science and Higher Education of the Russian Federation No. 122011100158-1.
Оболкин, А. П. Анализ сейсморазведочных исследований для оценки нефтегазоносности северо-востока Якутии / Оболкин А. П., Слепцова М. И., Севостьянова Р. Ф. ; Институт проблем нефти и газа // Успехи современного естествознания. - 2023. - N 12. - С. 193-198. - DOI: 0.17513/use.38191
DOI: 10.17513/use.38191
Количество страниц: 4 с.
Севостьянова Р. Ф. Прогноз потенциальной нефтеносности северо-западной части непскоботуобинской НГО / Розалия Севостьянова, Вячеслав Ситников // Геология и минерально-сырьевые ресурсы Северо-Востока России : материалы X Всероссийской научно-практической конференции с международным участием, 08–10 апреля 2020. – Якутск : Издательский дом СВФУ, 2020. – С. 298-301.
Количество страниц: 10 с.
The results of geological exploration work of the past years on the structure, geological development and prospects of oil and gas potential of the northeastern territories of the Republic of Sakha (Yakutia) are summarized and analyzed. The available data on the geological and geophysical study of each of the prospective areas are systematized. There is a certain continuity in the development of scientific ideas. At the present stage, the main directions of geological exploration remain practically the same as in the middle of the last century. This is mainly coastal and intermountain depressions and deflections (Primorskaya, Tastakhskaya, Zyryanskaya, etc.), within which the total thickness of meso-Cenozoic deposits reaches 2 km or more. Taking into account the results of studying these deposits in natural outcrops in areas adjacent to the onboard parts of these depressions, the presence of terrigenous reservoir horizons with sufficiently high filtration and capacitance properties and overlapping substantially clayey strata - the shields - is predicted within the sedimentary cover. It is indicated that an additional role in the increase of hydrogeological closure of the earth's interior is played here, perhaps, by the fact of the presence and widespread development of a thick layer of permafrost in the upper part of the section. According to the results of geophysical studies, traps of various types have been detected, including traditional anticlinal structures with elements of tectonic and lithologic screening, traps associated with manifestations of thrust tectonics, non-anticlinal traps, etc. For the first time, the question is raised about the potential petroleum potential of Paleozoic carbonate and terrigenous deposits, which are accessible for deep drilling in the Kolyma-Indigir interfluve within the zone of the Prikolymskie uplifts. It was confirmed that all coastal depressions of different sizes are open to the north towards the East Siberian Sea and are developed mainly on its shelf, where the prevailing part of the initial geological resources of hydrocarbons is predicted. On the continental land, areas with optimal conditions for searching for oil and gas accumulations in different geological conditions are planned. Priority areas for setting initial works are recommended.
О строении и перспективах нефтегазоносности пришельфовых арктических территорий Восточной Якутии / В. С. Ситников, Н. Н. Алексеев, Н. А. Аржаков, А. П. Оболкин, К. А. Павлова, Р. Ф. Севостьянова, М. И. Слепцова // Наука и образование. — 2017. — N 4 (88), октябрь-декабрь. — С. 50-59.