Open AccessConditions for the formation and accumulation of hydrocarbons in oligocene-miocene sediments of Western Absheron
Author(s) -
R.M. Huseynov,
AUTHOR_ID
Publication year - 2021
Publication title -
elmi əsərlər
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.409
H-Index - 11
eISSN - 2218-8622
pISSN - 2218-6867
DOI - 10.5510/ogp20210300525
Subject(s) - geology , source rock , stratum , sedimentation , organic matter , paleontology , geochemistry , diatom , hydrocarbon , sediment , oceanography , chemistry , organic chemistry , structural basin
Oligocene-Miocene deposits, after the main oil-gas suit of Azerbaijan – the Productive Suit, are one of the most studied objects. This complex is classified as mature rocks and, according to the stratigraphic scale, is associated with Maykop, Chokrak, and diatom deposits. Therefore, studies of the conversion of organic substances to hydrocarbons under favourable sedimentation and thermobaric conditions are of great importance. In addition, the determination of hydrocarbon generation zones, the presence of appropriate paleotectonic and paleostructural conditions for their further migration and accumulation in traps are also important tasks requiring clarification. For this purpose, maps of the Maykop and Mid- and Upper Miocene sediments were constructed, models reflecting their paleostructural position by the end of the century of the productive stratum, and predicted paleotemperatures are indicated on the diagrams. As a result, it was found that the reducing-alkaline environment existing during sedimentation in the Maykop and Chokrak period was favourable for the conversion of organic substances into hydrocarbon. Keywords: Western Absheron; oligocene-miocene sediments; source rock; organic matter; oil window; vitrinite; geochemical condition; source of generation; migration; traps; paleostructure.