Remote sensing at the study of the thermal field of the south ustyurt region to find hydrocarbon deposits
Abetov A.E. Yessirkepova S.B. Barbosa J.C.M.
2023National Academy of Sciences of the Republic of Kazakhstan
News of the National Academy of Sciences of the Republic of Kazakhstan, Series of Geology and Technical Sciences
2023#2023Issue 26 - 16 pp.
The article discusses the interpretation of remote sensing data at the study of the thermic field in the southeastern part of the South Mangyshlak-Ustyurt trough system in order to determine the possibility of involving thermic parameters to exploration hydrocarbon (HC) fields. The products derived from Remote Thermal Infrared Survey Data (RTISD) are analyzed in detail, providing a complementary analysis for the geological and geophysical approach generally used at the exploration oil and gas fields. Thermal properties of different horizontal and vertical sections of the area were estimated from regional and local components of ground infrared survey data, which provided the detection of geothermic anomalies. We interpreted that the Shakhpakhty tectonic step is characterized by relatively large positive thermal anomalies, which indicates the predominance of shallow set of rocks (< 2 km deep) with high values of thermophysical properties. Moreover, the intensity of the thermal infrared anomalies increases with depth in blocks, which apparently characterizes the position of geological and structural elements that differ of thermal and physical properties. The Central Ustyurt dislocation system and the Assakeudan depression, are characterized by low intensity thermal anomalies, indicating that they include rocks or sediment with low thermophysical properties. The Assakeudan depression is characterized by large thickness of sedimentary rocks, which mostly form the oil-source suites. Faults that disrupt the lateral continuity of these geological formations are considered as conduits for migration of hydrocarbons, deep fluids, heat and mass transfer. The results show that satellite infrared data can be used as exploration criterion for mapping potential hydrocarbon accumulations in the southern part of the Ustyurt region. The results of integrated analysis of geothermal, gravity, magnetic and radiometric anomalies allowed us to interpret on geological heterogeneity of large regional structures, about the depth of occurrence of gravity-disturbing masses and magnetically disturbed objects is revealed, about the characteristic of faults and the local structures in the geophysical fields. According to the analyze highlighted local structures Utezhan, Kozhantai, North Kozhantai, Otynshy with sufficiently high hydrocarbon potential, and recommended for further study by seismic and deep drilling methods.
Anisotropic transformation method , MODIS , Thermal anomalies , Transforms
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National Academy of Sciences of the Republic of Kazakhstan, Kazakh National Research Technical University named after K.I. Satbayeva, 22a Satpaev str, Almaty, 050013, Kazakhstan
Kazakh National Research Technical University named after K.I. Satbayev, 22a Satpaev str, Almaty, 050013, Kazakhstan
Institute of Geosciences of University of Brasilia, Ala Central. CEP 70.910-900, Brasilia, Brazil
National Academy of Sciences of the Republic of Kazakhstan
Kazakh National Research Technical University named after K.I. Satbayev
Institute of Geosciences of University of Brasilia
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