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Changes in Thermal Conductivity of Rocks in the Lithosphere of the West Siberian Basin in the Area of the Tumen SG-6 Wellстатья
Информация о цитировании статьи получена из
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 17 апреля 2024 г.
- Автор: Galushkin Yu I.
- Журнал: Izvestiya. Physics of the Solid Earth
- Том: 59
- Номер: 4
- Год издания: 2023
- Издательство: Pleiades Publishing, Inc.
- Местоположение издательства: New York, USA
- Первая страница: 622
- Последняя страница: 632
- DOI: 10.1134/S1069351323040067
- Аннотация: Abstract—Numerical reconstructions of the thermal regime of the lithosphere of the West Siberian basin inthe Koltogor-Urengoi graben in the vicinity of the Tyumen SG-6 superdeep well are used to analyze the depth distribution of thermal conducti vity of basin rocks. Five depth intervals that differ in the pattern of changes in thermal conductivity of rocks are distinguished: permafrost zone, sedimentary section below this zone, zone of anomalous decompaction of rocks, consolidated crust, and mantle. The algorithms for calculating thermal conductivity are considered, and the main factors affecting the depth changes of the latter are determined for each of the five intervals. A sharp decrease in thermal conductivity of rocks at the base of the sedimentary cover and at the basement top in the vicinity of the SG-6 well is associated with rock decompaction due to tectonic fracturing and hydrothermal erosion. The analysis suggests that the stationarity conditions of the process are not observed in optical scanning thermal conductivity measurements and, therefore, this method may overestimate the true thermal conductivity of rocks.Keywords: SG-6 well, basin modeling, thermal conductivity, porosity, rock temperature, permafrost
- Добавил в систему: Галушкин Юрий Иванович