PRESENT-DAY FLUID DYNAMICS IN THE SOUTH CASPIAN BASIN:
FEATURES AND QUANTITATIVE ESTIMATES

 2021 A.A. Feyzullayev

Institute of Geology and Geophysics, Azerbaijan National Academy of Sciences, Baku, Azerbaijan

е-mail: fakper@gmail.com

Abstract. The South Caspian Basin (SCB), located within the Alpine-Himalayan mobile belt, is known for its intensive modern fluid dynamics, the quantitative and qualitative analysis of which allows solving many problems of oil and gas ontogenesis, including the development of diapirism and mud volcanism. In the paper, on example of basic mud volcanoes (MV) and gas condensate fields, the main features of modern fluid dynamics in the SCB are considered with purpose to quantify the volumetric velocity of their focused flows. These assessments were carried out using both the classical and the new (based on the concept of renewable gas resources in the reservoir and in the focus of MV) methodological approaches. The estimates made for the volumetric rate of periodic replenishment with gas of the MV chamber (0.4410³ m³/day) are in good agreement with the estimates of the rate of natural replenishment of the gas reservoir (0.4210³ m³/day) at the Lokbatan structure affected by the same name MV. The performed estimates of the volume of gas emitted into the atmosphere during a MV eruption are 1–2 orders of magnitude less than the earlier estimates. The forecast and analysis of the dynamics of fluid pressure in the MV chamber is recommended as an additional criterion for assessing the volume of explosive gas.

Keywords: South Caspian Basin, field, mud volcano, chamber, gas, depth, eruption, volumetric velocity.

About the author

FEYZULLAYEV Akper Akper ogly – Institute of Geology and Geophysics, Azerbaijan National Academy of Sciences. Azerbaijan, AZ1143, Baku, H. Javid av., 119. E-mail: fakper@gmail.com

Cite this article as: Feyzullayev A.A. Present-day fluid dynamics in the South Caspian Basin: Features and quantitative estimates, Geofizicheskie Protsessy i Biosfera (Geophysical Processes and Biosphere), 2021, vol. 20, no. 1, pp. 77–94 (in Russian). https://doi.org/10.21455/GPB2021.1-8

English version: Izvestiya, Atmospheric and Oceanic Physics, 2021, vol. 57, iss. 7. ISSN: 0001-4338 (Print), 1555-628X (Online). https://link.springer.com/journal/volumesAndIssues/11485