Geology Reference
In-Depth Information
>170 MMY
170-160 MMY
160-140 MMY
140-100 MMY
Figure 6.1-a
South Caspian Depression (west flank). Geochemical age of the Productive
Series oils. 1. Begimdag-Tegchay; 2. Sovetabad; 3. Kalamkuduk; 4. Adzhiveli; 5.
Apsheron Bank; 6. Kyurovdag; 7. Mishovdag; 8. Salakhay; 9. Arzani; 10. Umbaki;
11. Cheildag; 12. Shikhigaya; 13. Binagadi-Chakhnaglyar; 14. Balakhany-Sabunchi;
15. Buzovna; 16. Darwin Bank; 17. Garabagly; 18. Kyursangya; 19. Galmas; 20. Duvanny;
21. Kyanizadag; 22. Garadag; 23. Lokbatan-Puta; 24. Kergez; 25. Shabandag; 26.
Bibieybat; 27. Surakhany; 28. Garachukhur; 29. Gala; 30. Pirallakhni; 31. Gyugryan-
Deniz; 32. Zyrya; 33. Chilov; 34. Azi Aslanov; 35. Dzhanub (Yuzhnaya); 36. Palchykh
Tapasi; 37. Neft Dashlary; 38. Gyuneshli; 39. Chirag; 40. Azeri; 41. Neftechala; 42. Khilly;
43. Pirsagat; 44. Dashgil; 45. Alyat-Deniz; 46. Sangachal-Deniz; 47. Duvanny-Deniz;
48. Bulla; 49. Gum-Adasy; 50. Bulla-Deniz; 51. Bakhar.
in its own oil- and gas-saturation and in the oil- and gas-generation and
that of the Productive Series. There are present-day limitations to the scale
of realization of oil and gas-generative potential in the Paleogene-Miocene
complex. These limitations are determined by the shift down the section
of oil and condensate windows due to severe thermobaric regime and the
restrictions on fluid outflow within the mostly clayey interval.
On assuming that the average geochemical age of Paleogene-Miocene
hydrocarbons is about 40 MMY and those of Mesozoic age are about 160
MMY, then the fraction of former (for instance, in the Baku Archipelago
oils with an average calculated age of 100 MMY) may be estimated at 45
to 50%. Up the regional dip of folding (Apsheron Peninsula, Apsheron
Archipelago, Dzheiran-Kechmes Depression, SW Gobustan), the fraction
of the “young” component declines to 30-10%.
