A.V. Poletayev
 
Gas bearing capacity of the upper part of sedimentary cover in the Southern Caspian
DOI 10.31087/0016-7894-2019-5-33-43

Studies of gases of the near‑surface of the Southern Caspian, especially in its deep‑water part, is of great practi cal importance for explorati on, prospecti ng acti viti es and esti mati ng hydrocarbon potenti al of gas hydrate zones. The purpose of the research is to study the distributi on of hydrocarbon gases intensity over the area, as well as the detecti on of gas generati on zones. 1282 gas samples taken from the South Caspian fi elds (Shah Deniz, Bakhar, Pirallahi, Khali) and deep‑water South Caspian areas were examined together with the other geological and geophysical data. Data on the chemical and isotope compositi on of 147 hydrocarbon gas samples taken from oil and gas fi elds of South Caspian basin, 153 samples from mud volcanoes, 29 samples from bott om sediments and 4 samples from gas hydrates were interpreted. Research methods are based on interpretati on of gas survey data and isotope and chemical compositi on analysis of South Caspian hydrocarbon gases. As a result of the studies maps of the change in methane, ethane, propane, butane content within the near‑surface of the studied deposits were created. Based on the analysis of intensity variati ons of gas manifestati ons over the area and depending on the geological conditi ons it is found that mud volcanoes and faults are the most probable hydrocarbon migrati on paths; they refl ect geological setti ngs and generati on potenti al of the deep‑seated deposits of the Southern Caspian. Hydrocarbon gases in seafl oor and bear‑surface sediments of the South Caspian column are closely associated with the sources of hydrocarbon formati on, migrati on and other processes in deep and near‑surface sequences.

Key words: gas survey; South Caspian; faults; mud volcanoes; gas content.

For citation: Poletayev A.V. Gas bearing capacity of the upper part of sedimentary cover in the Southern Caspian. Geologiya nefti i gaza. 2019;(5):33–43. DOI: 10.31087/0016‑7894‑2019‑5‑33‑43.

References

1. Gas hearing capacity in upper part of section and sea bottom gas shows (gas hydrates) in Absheron archipelago and northern part of Baku archipelago of Azerbaijan sector Caspian Sea with aims geological, geophysical and drilling data collection. Baku: SOCAR; 2012. 215 p.

2. Shikhaliyev Y.A., Akhmedov A.M., Zeynalov A.Z., Abdiilkhakova Z.N. Gas hearing capacity in upper portion of section and sea bottom gas shows in Azerbaijan sector of Caspian Sea: analysis, summary and proposals. Azerbaijan Oil Industry Journal. 2015;(5):9–15.
3. Geological and geochemical conditions for the conservation of hydrocarbon fluids in the South Caspian basin [Geologicheskie i geokhimicheskie usloviya sokhraneniya uglevodorodnykh flyuidov v Yuzhno-Kaspiiskom basseine]. Baku, 2007. 175 p.
4. Geology of Azerbaijan. Oil and gas [Geologiya Azerbaidzhana. T. VII. Neft' i gaz]. In: A.A. Ali-Zadeh, ed. Baku: Nafta-Press; 2008. 380 p.

5. Geology of Azerbaijan. Vol. VIII. Hydrogeology and engineering geology [Geologiya Azerbaidzhana. T. VIII. Gidrogeologiya i inzhenernaya geologiya]. In: A.A. Ali-Zadeh, ed. Baku: Nafta-Press; 2008. 380 p.
6. Guliev I.S., Dadashev F.G., Poletaev A.V. Isotopes of hydrocarbon gases of Azerbaijan [Izotopy uglevodorodnykh gazov Azerbaidzhana]. Baku: Nafta-Press; 2013. 107 p.
7. Methodology of study and developing the Bulla-Deniz field, the National Academy of Sciences of Azerbaijan [Metodologiya izucheniya i osvoeniya mestorozhdeniya Bulla-Deniz]. In: A.A. Ali-Zadeh, ed. Baku: Natsional'naya akademii nauk Azerbaidzhana, Institut glubinnykh problem; 1995. 138 p.
8. Aliev A.I. Oil and gas formation conditions in the South Caspian Depression [Usloviya formirovaniya zalezhei nefti i gaza v Yuzhno-Kaspiiskoi vpadine]. Izvestiya NANA: Nauki o Zemle. 2004;(4):13–24.
9. South Caspian Basin project. Geological Institute of Azerbaijan National Academy of Sciences (GIA), Azerbaijan research Institute of Geophysics (SOCAR), Earth Sciences and Resources Institute of the South Carolina (ESRI); 1995. 171 p.
10. Abasov M.T., Kondrushkin Yu.M., Aliyarov R.Yu., Krutykh L.G. Investigation and prediction of difficult natural reservoir oil and gas in the South Caspian Sea [Izuchenie i prognozirovanie parametrov slozhnykh prirodnykh rezervuarov nefti i gaza Yuzhno-Kaspiiskoi vpadiny]. Baku: Nafta-Press; 2007. 217 p.
11. Ismail-Zade А.D., Ali-Zadeh Ak.A., Guliev I.S., Babaev D.Kh., Gadzhiev A.N. About possibility of mantle pattern of hydrocarbon fluids in the South Caspian depression. Izvestiya NANA: Nauki o Zemle. 2004;(3):6–11.
12. South-Caspian Basin: geology, geophysics, oil and gas content. In: A.A. Ali-Zadeh, ed. Baku; Nafta-Press; 2004. – 333 p.
13. Guliyev I.S., Levin L.E., Fedorov D.L. Hydrocarbons potential of the Caspian region (System Analysis) [Uglevodorodnyi potentsial Kaspiiskogo regiona (sistemnyi analiz)]. Baku: Nafta-Press; 2003. – 127 p.
14. Feyzullayev A.A., Huseynov D.A. Hydrocarbon potential and resources of Lower Pliocene-Productive series in South Caspian basin [Uglevodorodnyi potentsial i resursy nizhnepliotsenovykh otlozhenii produktivnoi tolshchi v Yuzhno-Kaspiiskom basseine]. Stratigrafiya i sedimentologiya neftegazonosnykh basseinov. 2016;(1):99–104.
15. Ginsburg G.D., Solovev V.A. Submarine gas hydrates [Submarinnye gazovye gidraty]. St. Petersburg: VNIIOkeangeologiya; 1994. 193 p.
16. Guseynov R.A., Dadashev F.G. Hydrocarbon gases of the Caspian Sea [Uglevodorodnye gazy Kaspiiskogo morya]. Baku: Nafta-Pressa; 2000. 128 p.
17. Dadashev F.G., Muradov Ch.S. et al. Assessment of oil and gas content prospective within Shakhov-Sea-Bulla-Sea water areas using gas geochemical methods and the trend of further prospecting works [Otsenka perspektiv neftegazonosnosti akvatorii Shakhovo-more – Bulla-more gazogeokhimicheskimi metodami i napravlenie dal'neishikh poiskovo-razvedochnykh rabot]. Baku: Fond instituta geologii NAN Azerbaidzhana; 1980. 20 p.
18. Poletaev A.V., Poletaeva E.V. Study of heterogenous equilibrium in pressure and temperature coordinates: formation of hydrates. Perspective of scientific knowledge development in the XXI century. In: Russian economic: problems, tendentious, perspectives. N.4. V.4. 2015. pp. 104–111.
19. Poletaev A.V., Poletaeva E.V. Study of heterogenous equilibrium in pressure and temperature coordinates: formation of hydrates. Uchenye zapiski Tambovskogo otdeleniya RoSMU. 2015;(4). Available at: https://cyberleninka.ru/article/n/izuchennost-diagramm-geterogennogoravnovesiya-v-koordinatah-davleniya-i-temperatury-gidratoobrazovaniya (accessed: 13.09.2019).
20. Guliev I.S., Aliev G.-M.A., Alieva E.G., Muradov Ch.S. A Multicomponent Anomaly in the Bottom Sediments and Seawater of the Central Part of the South Caspian Depression. Geochemistry International. 2000;38(9):921–928.
21. Veliev G., Tsurkov M. SOCAR published information about commercial oil volume from AGC fields. 2015. Available at: http://www.trend.az/news_print.php?news_id=2389385 (accessed 18.04.2018).
22. Fowler R., Mildenhall J., Zalova S., Riley G., Eslyey G., Desplanques A., Guliyev F. Mud volcanoes and structural development on Shah Deniz. Journal of Petroleum Science and Engineering. 2000;28(4):189–206. DOI: 10.1016/S0920-4105(00)00078-4
23. Agishev A.P. Interlayer gas migrations in gas while drilling [Mezhplastovye peretoki gaza pri razrabotke gazovykh mestorozhdenii]. Moscow: Nedra; 1966. 204 p.

A.V. Poletayev   Scopus

Oil and gas Institute of National academy of sciences of Azerbaijan, Baku, Azerbaijan;

avo1@mail.ru;