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)

SCImago Journal & Country Rank

Stability conditions of oil-saturated reservoirs porosity with deep overlaying

Hasanov A.B.1, Isfandiyarov O.A.2, Mehraliyeva N.H.2, Abbasov T.S.3


1 Ministry of Science and Education of the Republic of Azerbaijan, Oil and Qas Institute, Baku, Azerbaijan 9, F.Amirov str., Baku, AZ1000 :

2 Azerbaijan State Oil and Industry University, Baku, Azerbaijan 20 Azadlyg ave., Baku, АZ1010:

3 Saudi Aramco, Dhahran, Saudi Arabia:




This paper describes the studies covered the most typical for the region productive reservoirs containing pelitic, aleuritic, fine-grained sand and medium-grained sand fractions. The results of changes in the content of fractions depending on the depth are presented in the form of circular diagrams of changes in porosity, fractional composition and mechanical compaction of deposits. The regularities of compaction of the pore space of productive reservoirs in-depth and the relationship between the specific surface of the pore space and oil saturation were established. The results are based on statistical estimates of the impact of individual fractions (including dominant fractions) on porosity in various reservoir rock types. In particular, the obtained data showed that an increase in the content of the dominant fraction, as well as the 0.175 mm fraction in clay-sand siltstones, leads to an increase in porosity. İn the group of sandy-clayey siltstones, the porosity effect of both the dominant (0.055 mm) and larger (0.25 mm) fractions is negative. Finally, in sandy loam, the effect on the porosity of the dominant (fine 0.055 mm) and subordinate (more than 0.175 mm) fractions, as well as in the group of clayey-silty sands, is opposite. Thus, an increase in the content of the fine (0.055 mm) fraction in the sandy loams leads to a decrease in porosity, and an increase in the content of the larger fraction (0.175 mm) increases the value of porosity.


Keywords: intergranular porosity, terrigenous types of reservoirs, grains packing, particle size  nalysis, dominant fractions of rocks 




Ali-zadeh A.A., Akhmedov G.A., Akhmedov A.M., Aliev A.K., Zeynalov M.M. Geology of oil and gas fields in Azerbaijan.   Nedra.  Moscow, 1966, 392 p. (in Russian).

Babaev M.S., Sultanov L.A., Ganbarova Sh.A., Alieva T.A. Petrophysics data on productive strata in oil and gas fields of the Baku Archipelago. Izvestiya vuzov Azerbaydzhana. No. 2, 2014, pp. 7-12 (in Russian).

Bjorlykke K. Effects of compaction processes on stresses, faults and fluid flow in sedimentary basis; examples from the Norwegian Margin. Geological Society Special Publications, Vol. 253, No. 1, 2006, pp. 359-379.

Glover P. Formation evaluation MSc Course Notes. Porosity. 2016, pp. 43-46.

Guliev I.S., Shikhaliev O.A., Feyzullaev A.A., Kocharli Sh.S. Towards the concept of geological exploration for the preparation of hydrocarbon resources in Azerbaijan.  "Azerbaijan oil economy" Journ., Baku, No. 9, 2014, pp. 8-15 (in Russian).

Gurbanov V.Sh., Hasanov A.B., Abbasova G.G. Depth distribution of petrophysical properties of Mezozoic sediments of Khizi tectonic zone. Geomodel 2021 – 23th Scientific Practical Conference on Oil and Gas. Geological Exploration and Development, 2021, p. 38.

Gurbanov V.Sh., Sultanov L.A., Valiev S.A., Babaeva M.T. The lihtophysical and collector characteristics of Mesozoic-Cenozoic deposits of north-western part of the Caspian depression. Vestnik PNIPU. Geologiya. Neftegazovoe i gornoe del, Vol. 14, No. 17, 2015, pp. 5-15 (in Russian).

Hasanov A.B.  Intra-layer's pressure regimes and reservoir properties of the VII horizon within SDKhZ field in Azerbaijan.  Geomodel 2021 ­– 23th Scientific Practical Conference on Oil and Gas Geological Exploration and Development, 2021.

Imanov A.A. Comprehensive assessment of the properties of sedimentary rocks and oil and gas content of the South Caspian basin at great depths. Elm. Baku, 2011, 256 p. (in Russian).

Imanov A.A. Physical and mechanical properties of sedimentary rocks of the South Caspian basin in deep conditions: hydrocarbon resources of great depths. Nafta-Press. Baku, 2012, 204 p. (in Russian).

Kerimov V.Y., Gasanov A.B., Gurbanov V.S., Abbasova G.G. Petrophysical characteristic of deep oil and gas reservoirs in Inland and offshore fields in Azerbaijan. Eurasian Mining, No. 1, 2020, рр. 3-8.

Kocharli Sh.S. Problematic issues of oil and gas geology of Azerbaijan. Ganun. Baku, 2015, 280 p. (in Russian).

Levchuk M.A., Bukreeva G.F. On the sorting of terrigenous sediments and the values that average the particle size distribution. In: Geocyclicality. Institute of Geology and Geophysics of the Siberian Branch of the USSR Academy of Sciences. Novosibirsk, 1976, 124 p. (in Russian).

Olsson W.A. Theoretical and experimental investigation of compaction bands in porous rock J. Geophys. Res., Vol. 104, No. B4, 1999, p. 7219-7228, doi:10.1029/1998JB900120.

Rakhmanov R.R., Sultanov L.A., Nadzhaf-Kulieva V.M., Ganbarova Sh.A. Assessment of oil and gas prospects of the Lower Pliocene shallow productive strata of the Absheron Peninsula and Baku Archipelago using the integrated geological and geophysical research data. Rassokhin readings. International Workshop Proceedings. Part 1. Ukhta State Technical University. Ukhta, 2013, pp. 40-41 (in Russian).

Romanovsky S. I. Mathematical modeling of sedimentogenesis processes. In: Geological information and mathematical geology. Nedra. Moscow, 1976, pp. 66-70 (in Russian).

Yusifov Kh.M. Substantiation of oil and gas content of deep-water Mesozoic-Cenozoic deposits of Azerbaijan. Azerbaj­dzhanskoe-neftyanoe-xozyajstvo, No. 5, Baku, 2013, pp. 13-25 (in Russian).

Yusifov Kh.M., Aslanov B.S. Oil and gas basins in Azerbaijan “Mars Print” NPF. Baku, 2018, 324 p. (in Azerbaijani).

Zapivalov N.P., Smirnov G.I., Kharitonov V.I. Fractals and nanostructures in oil and gas geology and geophysics. Geo.  Novosibirsk, 2009, 130 p. (in Russian).


DOI: 10.33677/ggianas20220200081