Ismaylova G.G.

Graduated from the Azerbaijan State University (1982), specialization "chemistry".
PhD in Geological and Mineralogical Sciences.
Leading Researcher at the Institute of Geology and Geophysics of the National Academy of Sciences of Azerbaijan
Area of scientific interests: oil and gas geochemistry, fluid dynamics, reservoirs.
Author of 50 publications.
Regional petroleum geology
Article # 15_2023 submitted on 02/27/2023 displayed on website on 04/10/2023
11 p.
pdf Petrophysical properties of petroleum bearing rocks and their oil and gas prospects of a structure affected by an active mud volcano phenomenon (South Caspian basin)
The features of spatial changes in the lithological composition and reservoir properties of rocks of the productive strata (Lower Pliocene) of the Lokbatan gas-oil field of the South Caspian basin, affected by the most active mud volcano of the same name, are considered. On the example of the "Discontinuity" unit of the productive strata (VIIa and VII levels), the dependences between the lithological-reservoir properties and the initial oil flow rates of wells are considered. A positive relationship was found between well productivity and rock porosity.
It has been established that less favorable lithofacies conditions and reservoir properties of rocks are noted near the development of a mud volcano, which are manifested by relatively low productivity of wells. Wells located near faults are characterized by the highest productivity. Due to the low gas content of the field and the absence of the influence of numerous mud volcano eruptions on the productivity of wells, it was concluded that the role of its channel in the migration of hydrocarbons and the formation of the field is not significant.

Keywords: productive strata, lithological composition, reservoir properties, oil flow rate, mud volcano, Lokbatan gas-oil field, South Caspian basin.
article citation Feyzullaev A.A., Lunina V.N., Ismaylova G.G., Mammedova I.M. Osobennosti petrofizicheskikh svoystv porod i neftegazonosnosti struktury, porazhennoy aktivnym gryazevym vulkanom (Yuzhno-Kaspiyskiy basseyn) [Petrophysical properties of petroleum bearing rocks and their oil and gas prospects of a structure affected by an active mud volcano phenomenon (south Caspian basin)]. Neftegazovaya Geologiya. Teoriya I Praktika, 2023, vol. 18, no. 2, available at: EDN: COFZAD
   Agabekov M.G. Geologicheskoe stroenie neftyanykh mestorozhdeniy i ikh formirovanie [Geological structure of oil fields and their formation]. Baku: Azerneshr, 1963, 274 p.
   Aliev A.A., Guliev I.S., Rakhmanov R.R. Katalog izverzheniy gryazevykh vulkanov Azerbaydzhana (1810-2007) [Catalog of eruptions of mud volcanoes in Azerbaijan (1810-2007)]. Izd. 2-e. Baku: Nafta-Press, 2009, 101 p.
   Aliev A.A., Guliev I.S., Rakhmanov R.R. Katalog izverzheniy gryazevykh vulkanov Azerbaydzhana (2008-2019) [Catalog of eruptions of mud volcanoes in Azerbaijan (2008-2019)]. Izd. 3-e. Baku: Elm, 2019, 70 p.
   Feyzullaev A.A., Guseynov D.A., Rashidov T.M. Izotopnyy sostav produktov deyatel'nosti gryazevykh vulkanov Yuzhno-Kaspiyskogo basseyna v svyazi s neftegazonosnost'yu glubokopogruzhennykh otlozheniy [Isotopic composition of the products of the mud volcanoes activity in the South-Caspian basin in connection with petroleum potential of the deeply burried sediments]. ANAS Transactions, Earth Sciences, 2022, 1, pp. 68-80. DOI: 10.33677/ggianas20220100073
   Feyzullaev A.A., Ismaylova G.G. Mekhanizm formirovaniya mestorozhdeniy nefti i gaza v Yuzhno-Kaspiyskom basseyne (na primere mestorozhdeniya Gyuneshli) [The mechanism of formation of oil and gas fields in the South Caspian Basin (on the example of the Gunashli field)]. Geologiya nefti i gaza, 2013, no. 1, pp. 44-47.
   Feyzullayev A.A., Lerche I., Gojayev A.A. About the Impact of Mud Volcano Eruptions and Earthquake on Petroleum Production Rates (South Caspian Basin). International Journal of Engineering Research & Technology (IJERT), 2020, 9(8), pp. 702-708.
   Feyzullayev A.A., Tagiyev M.F., Lerche I. On the origin of hydrocarbons in the main Lower Pliocene reservoirs of the South Caspian Basin, Azerbaijan. Energy Exploration & Exploitation, 2015, 33(1), 1-14
   Guliyev I., Feyzullayev A. Geochemistry of hydrocarbon seepages in Azerbaijan in D. Shumacher and M. Abrams, eds “Hydrocarbon migration and its near-surface expression. AAPG Memoir, 66, 1996, pp. 63-70.
   Gurgey K. Correlation, alteration, and origin of hydrocarbons in the GCA, Bahar and Gum Adasi fields, western South Caspian Basin: geochemical and multivariate statistical assessments. Marine and Petroleum Geology, 2003, 20(10), pp. 1119-1139.
   Katz K.J., Richards D., Long D., Lawrence W. A new look at the components of the petroleum system of the South Caspian Basin. Journal of Petroleum Science and Engineering 28, 2000, pp. 161- 182.
Regional petroleum geology
Section editor – PhD in geology and mineralogy Makarevich V.N.
Article # 40_2017 submitted on 11/15/2017 displayed on website on 12/11/2017
12 p.
pdf  Pecularities of gas content change in productive series belonging to Apsheron Archipelago, Azerbaijan
Based on the data on the change in a wide range of gas-oil ratio GOR values of the Apsheron Archipelago petroleum deposits, the gas content of the productive stratum of the Lower Pliocene and its variation in space are estimated.The value of GOR increases towards the central deep-seated part of the South Caspian Basin. Low GOR values in the depth interval up to a kilometer are due to poor gas conservation conditions.In the stratigraphic section of the productive series, the highest values characterize the different levels of the Balakhani Formation, and the lowest of the Fasil Formation. The characteristic dependence of GOR on thermodynamic parameters, oil density, and capacitive-filtration properties of rocks was revealed.

Keywords: oil and gas fields, GOR, Lower Pliocene, Apsheron Archipelago, Azerbaijan.
article citation Feyzullayev A.A., Ismaylova G.G., Guseynova A.N. Zakonomernosti izmeneniya gazonosnosti produktivnoy tolshchi mestorozhdeniy Apsheronskogo arkhipelaga, Azerbaydzhan [Pecularities of gas content change in productive series belonging to Apsheron Archipelago, Azerbaijan]. Neftegazovaya Geologiya. Teoriya I Praktika, 2017, vol. 12, no. 4, available at:

   Aliev A.I. Zakonomernosti razmeshcheniya zalezhey nefti i gaza na severo-zapadnom bortu Yuzhno-Kaspiyskoy vpadiny [Regularities in the location of oil and gas deposits on the northwestern side of the South Caspian Basin]. Oil and gas geology, 1972, no. 1, p. 6-9.
   Dadashev F.G. Gazonosnost' produktivnoy tolshchi Yugo-Vostochnogo Kavkaza [The gas content of the Productive series of the South-Eastern Caucasus]. Baku, 1970, 150 p.
   Feyzullayev A.А., Guliyev I.S., Tagiyev M.F. Source potential of the Mesozoic-Cenozoic rocks in the South Caspian Basin and their role in forming the oil accumulations in the Lower Pliocene reservoirs. Petroleum Geoscience. 2001. 7(4), P. 409-417.
   Kats D.L., Kornel D., Veri Dzh.A. Rukovodstvo po dobyche, transportu i pererabotke prirodnogo gaza [Handbook of natural gas engineering]. Nedra, 1965, 678 p.
   Kingston, J. Estimation of condensate in the assessment of undiscovered petroleum resources. Open file Report 90-230 // United States Geological Survey. 1990. 37 p.
   Maclay D.M., Shepard N.K., Zeringue B.A. Estimated Oil and Gas Reserves // Gulf of Mexico OCS Region December 31. 2009. OCS Report BOEM 2013-01160. U.S. Department of the Interior Bureau of Ocean Energy Management Gulf of Mexico OCS Region. New Orleans. July 2013, 23 p.
   Mark J. Kaiser and Yunke Yu. Gulf Coast economic limits-1: Economic limits estimated for US Gulf Coastal fields. Oil and Gas Journal. 2010. 108(20), P. 47-54.
   Shurupov S.V., Belousova A.S. Otsenka resursa poputnogo neftyanogo gaza pri dobyche nefti v Rossii [Estimated of the resource of associated petroleum gas during oil production in Russia]. Gas chemistry, January February, 2010, p.70-74.
   The Big Encyclopedic Polytechnical Dictionary. Moscow, Multitrade, 2004, 656 p.

Geological simulation and issues of petroleum fields development
Section editor – PhD in geology and mineralogy Prischepa O.M.
Article # 30_2017 submitted on 07/26/2017 displayed on website on 09/15/2017
13 p.
pdf  Analysis influence of the reservoir lithofacial heterogeineity of the operating mode of the underground gas storage Galmas (Azerbaijan)
In the paper analyzes of the monitoring results of the operational parameters of the Galmas underground gas storage, created in the same-named depleted gas-condensate field of Azerbaijan is given. The object of gas storage is the terrigenous rocks of the Lower Pliocene age - the Productive series. The generalization of the results of the executed studies allows to conclude that in the operation mode of the Galmas underground gas storage, along with technical and technological, there are certain geological problems associated with the spatial heterogeneity of the lithological composition of the rocks and its capacity-filtration features.

Keywords: underground gas storage, lithofacial heterogeneity, capacity-filtration feature, injection and extraction of gas, depleted gas condensate field Galmas, Azerbaijan.
article citation Feyzullayev А.А., Gojayev А.G., Ismaylova G.G., Mirzoyeva D.R. Analiz vliyaniya litofatsial'noy neodnorodnosti rezervuara na rezhim ekspluatatsii podzemnogo gazokhranilishcha Galmas (Azerbaydzhan) [Analysis influence of the reservoir lithofacial heterogeineity of the operating mode of the underground gas storage Galmas (Azerbaijan)]. Neftegazovaya Geologiya. Teoriya I Praktika, 2017, vol. 12, no. 3, available at:

   Belozerov V.B. Vliyanie fatsial'noy neodnorodnosti terrigennykh kollektorov na razrabotku zalezhey uglevodorodov [Influence of facial granulometry of terrigenous reservoirs on the development of hydrocarbon deposits]. Izvestiya Tomskogo politekhnicheskogo universiteta, 2011, vol. 319, no.1, pp. 123-130.
   Berman L.B., Neiman V.S. Issledovanie gazovykh mestorozhdeniy i PKhG metodami promyslovoy geofiziki [Study of gas deposit and UGS by methods of petroleum geophysics]. Мoscow, Nedra, 1972, 216 p.
   Berman L.B., Zhabrev I.P., Ryzhik V.M., Yudin V.A. Fil'tratsionnye modeli neodnorodnykh gazovykh zalezhey [Filtration models of heterogeneous gas deposits]. NTO Ser. Razrabotka i ekspluatatsiya gazovykh i gazokondensatnykh mestorozhdeniy, Moscow, Izd. VNIIEgazprom, 1983, no. 4, pp. 26-32.
   Evik V.N., Varyagov S.A., Pavlyukova I.V., Smirnov Y.Y. Monitoring geologicheskoy sredy pri ekspluatatsii Shchelkovskogo podzemnogo khranilishcha gaza [Monitoring of the geological environment during the operation of the Shchelkovo underground gas storage]. Neftegaz.RU, 20 aprelya 2009 g.
   Hewett T.A., Behrens R.A. Conditional simulation of reservoir heterogeneity with fractals. SPE Form. Eval. 1990, pp. 217–225. DOI:
   Kalinichenko I.V. Eksperimental'noe modelirovanie izmeneniya deformatsionnykh i emkostnykh svoystv poristykh kollektorov v svyazi s ekspluatatsiey podzemnykh khranilishch gaza [Experimental modeling of the change in deformation and capacity properties of porosity reservoir in connection with the operation of underground gas storage facilitie]. Dissertatsiya ... kandidata geologo-mineralogicheskikh nauk, Moskovskiy gosudarstvennyy universitet imeni M.V. Lomonosova, Moscow, 2009, 208 p.
   Kol'chitskaya T.N., Mikhaylov N.N. Povedenie glinistykh porod pri tsiklicheskikh nagruzkakh [Behavior of clay rocks under cyclic loads]. Geologiya nefti i gaza, 2000, no. 2, pp. 52-55.
   Obukhov O.K. Izuchenie vyderzhannosti kollektora v svyazi s ego neodnorodnost'yu dlya tseley razrabotki mestorozhdeniy [Study of the behavior of the reservoir due to its heterogeneity for the purpose of developing deposits]. Trudy KF VNII, Moscow, Gostoptekhizdat, 1964, no.14, pp. 67-76.
   Pul'kina N.E., Zimina S.V. Izuchenie neodnorodnosti produktivnykh plastov [Study of reservoir heterogeneity]. Tomsk, Izd-vo Tomskogo politekhnicheskogo universiteta, 2012, 79 p.
   Semenov E.O. Osobennosti formirovaniya i otsenka kollektorskikh i ekraniruyushchikh svoystv terrigennykh porod pri sozdanii podzemnykh khranilishch gaza v vodonosnykh plastakh [Features of the formation and assessment of reservoir and sealing properties of terrigenous rocks in the creation of underground gas storage facilities in aquifers]. Avtoreferat dissertatsii … kandidata geologo-mineralogicheskikh nauk, Moscow, 2010, 24 p.
   Semin E.I. Geologicheskaya neodnorodnost' plastov i nekotorye sposoby ee izucheniya [Geological heterogeneity of stratum and some ways of research it]. Trudy VNII, 1962, no.34, pp. 3-43.
   Study on Underground Gas Storage in Europe and Central Asia. United Nations Publication. Geneva. 2013. 116 p.
   Underground gas storage in the world. EXECUTIVE SUMMARY. 2013.
   Yakovleva N.V. Sovershenstvovanie metodov monitoringa parametrov podzemnykh khranilishch gaza s tsel'yu predotvrashcheniya oslozhneniy pri ekspluatatsii [Improvement of methods for monitoring the parameters of underground gas storages in order to prevent difficulties during operation]. Avtoreferat dissertatsii … kandata tekhnicheskikh nauk, Moscow, 2005, 24 p.
   Yakovleva N.V., Lur'e M.V., Didkovskaya A.S. Uvelichenie doli bufernogo gaza v PKhG kak effektivnoe sredstvo predotvrashcheniya razrusheniya porovogo kollektora [Increasing the proportion of buffer gas in UGS as an effective means of preventing the destruction of the pore collector]. Upravlenie kachestvom v neftegazovom komplekse, 2004, no. 3/4, pp.65-67.
   Zubarev S.A. Razvitie tekhnologiy monitoringa za ob"ektom podzemnogo khraneniya gaza (na primere Tsentral'nogo PKhG)[Development of monitoring technologies for the underground gas storage facility (Based on the example of Central UGS)]. Avtoreferat dissertatsii … kandidata tekhnicheskikh nauk, Ukhta, 2010, 24 p.