International scientific journal

ISSN: 2663-0419 (electronic version)

ISSN: 2218-8754 (print version)

International scientific journal

ISSN: 2663-0419 (electronic version)

ISSN: 2218-8754 (print version)


Comparative analysis of catagenetic maturity models for Maykop sediments in Azerbaijan

Asgarov I.N.


Oil Gas Scientific Research Project Institute, Baku, Azerbaijan AZ1122, Baku, Azerbaijan, H.Zardabi prosp., 88a



Burial history, lithological composition of sediments, geochemical properties of organic matter and geothermal conditions were simulated for three different localities in Azerbaijan using basin modeling methods and software tools. Taking into account that this source interval can make voluminous contribution to hydrocarbon generation we have constructed catagenetic maturity models for these strata. Modeling of the temperature field from the beginning of sedimentation to the modern stage of basin formation is based on the principle of gradual reduction of temperature. In this way a good agreement between calculated temperature values and borehole temperature measurements has been obtained. The maximum paleotemperature of rocks is reflected in the reflectance values of vitrinite. To display the validity of temperature field modelling results we have provided a matching diagram plotting calculated vitrinite reflectance versus measured on core samples values. The catagenetic maturity models constructed suggest that in deeply buried Maykop strata of the Lower Kura, Yevlakh-Agjabadi depressions and Jalilabad trough oil window has subsided to different depths depending on geological evolution. Among localities considered the highest degree of catagenetic transformation has been reached in sediments within depocentral part of the Lower Kura depression. The deepest layers of the Oligocene – Lower Miocene interval have passed peak oil window and even more, realized complete hydrocarbon generation capability. In other areas thermal transformation ratio of the Maykop organic matter is estimated to be lower than that in the Lower Kura depression.

Maykop suite, organic matter, vitrinite reflectance, temperature, maturity modeling




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DOI: 10.33677/ggianas20220200083