On the assessment of the diversity of coefficients of oil recovery from developed objects


Keywords: correlation-regression analysis, mode of gas dissolved in oil, mixed mode, oil recovery, balance and current reserves

Abstract

Based on the geological and commercial material collected and systematized by the offshore fields of Azerbaijan, the article discusses the reasons for the varying degrees of use of their reserves. For this purpose, the identification of deposits was carried out accord- ing to the natural regime, as a complex factor affecting oil recovery. Oil recovery models have been obtained for offshore reservoirs, draining mainly in two types of mechanisms: mixed and solution gas drives. Based on these regression equations and geological-economical analysis, a comparative analysis of the factors influencing oil recovery was carried out. Study of the different nature of the implementation of reserves of deposits characterized by different natural mechanisms so as to determine the degree to which the geological and technological parameters at various stages of development influence oil recovery. Objects: Offshore deposits of the Republic, characterized mainly by the solution gas and mixed drives. Application of the methods of mathematical statistics (Student’s and Fisher’s criteria) for the comparative analysis of the parameters of the mined deposits, confined to different natural conditions, allowing the revelation of the degree to which they are different and various patterns of the use of the reserves. In order to determine the influence of various factors on oil recovery, we used the method of correlation-regression analysis. It was found that a wide range of changes in oil recovery factors is associated with the internal structure of the deposits, with varying degrees of activity of the energy of the reservoirs and the fluids saturating them. It is known that each of the geological and technolog- ical parameters to one degree or another affects oil recovery, this influence is complex and subject to certain changes in the process of reservoir mining. In order to study the influence of parameters on oil recovery, we developed matrices of averaged values of a number of parameters of offshore deposits draining by mixed and solution gas drives. Using multivariate correlation-regression analysis and appropriate software, we obtained models for each of the above types of the mechanisms. A comparative analysis of those models, as well as geological and field studies of the parameters included in the obtained regression equations, make it possible to correct the oil production process in a timely manner, and can also be used in designing projects for the additional mining of those objects.

Author Biographies

Fuad F. Maharramov
Azerbaijan State Oil and Industry University, Azerbaijan Republic
Vagif M. Kаrimov
Azerbaijan State Oil and Industry University, Azerbaijan Republic
Jafar J. Sharifov
Azerbaijan State Oil and Industry University, Azerbaijan Republic

References

1. Abdullaeva, L.A. (2010). Grafo-analiticheskaya model’ nefteotdachi zalezhej [Grapho-analytical model of oil recovery from deposits]. Actual problems of modern vocational education Tyumen, Yekaterinburg, Warsaw. 471-472. (In Russian).
2. Altunina, L.K., Kuvshinov, V.A., Stasieva, L.A., Kuvshinov, I.V. (2020). [Enhanced oil recovery for deposits of high viscosity oils using multifuctional systems based on surfactants] Journal of Physics: Conference Series. 1611. 1-5. – 012033. DOI: 10.1088 / 1742-6596 / 1611/1/012033
3. Bagirov, B.A. (1986). Geologicheskie osnovy dorazrabotki mestorozhdenij nefti i gaza [Geological foundations of additional development of oil and gas fields] Baku: ELM., 162 p. (In Russian).
4. Bagirov, B.A. (2003). Geologo-matematicheskie modeli v neftyanoj geologii [Geological and mathematical mod- els in petroleum geology] Scientific notes of AGNA. (In Russian).
5. Bagirov, B.A., Garagezov, E.Sh., Abdullaeva, L.A. (2010). Sravnitel’nyj analiz modelej nefteotdachi plastov, harakterizuyushchihsya razlichnymi prirodnymi rezhi- mami [Comparative analysis of oil recovery models of reservoirs characterized by different natural regimes] Materials of the international conference «New tech- nologies in oil production». Baku. 73 p. (in Russian).
6. Bagirov, B.A., Maharramov, F.F. (2016). Perspektivy razrabotki zalezhej s trudnoizvlekaemymi zapasami nefti [Prospects for the development of deposits with hard-to-recover oil reserves] Izvestiya vuzov. Mining Journal. Ekaterinburg. 6, 9-14. (in Russian).
7. Bagirov, B.A., Maharramov, F.F., Alakbarov, F.F. (2012). Prognozirovanie konechnogo koefficienta nefteotdachi zalezhej na nachal’nom etape razrabotki [Forecasting the final oil recovery factor of deposits at the initial stage of development] Geologist of Azerbaijan. 16. 53- 60. (In Russian).
8. Bagirov, B.A., Maharramov, F.F., Sharifov, J.J. (2013). Vyyavlenie izmenenij pokazatelej zalezhej v processe nefteizvlecheniya [Revealing changes in reservoir pa- rameters in the process of oil extraction] Materials of the international scientific-practical conference «Inno- vative development of the oil and gas complex of Ka- zakhstan» Aktau. 73-75. (In Russian).
9. Bagirov, B.A., Maharramov, F.F., Sharifov, J.J. (2021). Metodika opredeleniya svojstv tektonicheskih raz- ryvov plastov [Methodology for determining the prop- erties of tectonic fractures] Herald of the Azerbaijan Engineering Academy. 3, 13, 45-54. (In Azerb.).
10. Bagirov, B.A., Salmanov, A.M., Nazarova, S.A. (2007). Ocenka effektivnosti metodov primeneniya nefteotdachi plastov putem geologo-matematicheskogo modelirovaniya krivyh dinamiki dobychi nefti [Evaluation of the effectiveness of methods of oil recovery application by geological and mathematical modeling of oil production dynamics curves] Materials of the International Scientific Conference «current problems of geology». St. Petersburg 261- 267. (In Russian).
11. Chan, L.D., Chan, V.H., Fung, D.H., Hoang, V.K., Severinov, E.V., Ivanov, A.N. (2006). Osobennosti geologii i razrabotki zalezhi fundamenta mestorozhdeniya «Belyj Tigr» [Features of geology and development of the basement deposit of the «White Tiger» field] Oil indus- try. 6. 24–26. (In Russian).
DOI: 10.1080/10916466.2017.1360910 DOI: 10.34755 IROK.2021.68.85.069 (In Russian).
12. Dyshin O.A., Maharramov F.F. (2018). Stohasticheskoe interpolirovanie vodonosnyh svojstv neodnorodnyh geologicheskih sred na osnove fraktal’nyh processov [Stochastic interpolation of water-bearing properties of heterogeneous geological media based on fractal pro- cesses] Izvestiya UGGU. 2 (50), 72-78 (In Russian). DOI: 10.21440/2307-2091-2018-2-72-78
13. Efimova, M.R, Petrova, E.V, Rumyantsev, V.N. (2010). Obshchaya teoriya statistiki [General theory of statis- tics] Textbook. – 2nd ed., Add. and revised. M., In- fra-M, 416 p. (In Russian).
14. Ibragimov, Kh.M., Abdullayeva, F., Guseynova, N.I. (2017). [Experience of microbial enhanced oil recov- ery methods at Azerbaijan fields] Petroleum Science and Technology. 35, 18, 1822-1830.
15. Ivanov, E.N., Kononov, Yu.M. (2012). Vybor metodov uvelicheniya nefteotdachi na osnove analiticheskoj ocenki geologo-fizicheskoj informacii [The choice of enhanced oil recovery methods based on analyti- cal assessment of geological and physical informa- tion] Bulletin of the Tomsk Polytechnic University. Engineering of Georesources. V. 321. 1, 149-154. (In Russian).
17. Kalinina, V.N., Pankin, V.F. (2002). Matematicheskaya statistika [Mathematical statistics] Textbook, 4th ed., Rev. – M. Bustard, 336 p. (In Russian).
18. Magerramov, F.F., Sharifov, J.J. (2021). Analiz ostatochnyh zapasov zalezhej nefti s primeneniem dinamicheskoj modeli [Analysis of residual oil reserves using a dynamic model] Development of science and practice in a globally changing world in the face of risks. Col- lection of materials of the International Scientific and Practical Conference. Moscow, 130-136.
19. Magerramov, F.F., Sharifov, J.J. (2021). Modelirovanie nefteotdachi zalezhej, razrabatyvaemyh na rezhime rastvorennogo v nefti gaza [Simulation of oil recov- ery of deposits developed on the regime of gas dis- solved in oil] Ural Geological Journal. 4. 35-41. (In Russian).
20. Manzhai, V.N., Ulyanyuk, M.P., Rozhdestvensky, E.A. (2021). Perspektivnaya tekhnologiya uvelicheniya nefteotdachi na mestorozhdeniyah s raznoj proni- caemost’yu plastov [A promising technology for enhancing oil recovery in fields with different reservoir permeability] Bulletin of the Tomsk Polytechnic Uni- versity. Engineering of Georesources. V. 332, 9. 92-99. DOI: 10.18799/24131830/2021/9/3356 (In Russian).
21. Muslimov, R.Kh. (2014). Nefteotdacha: proshloe, nas- toyashchee, budushchee [Oil recovery: past, present, future] tutorial. Kazan: Publishing house «Fyan» of the Academy of Sciences of the Republic of Tatarstan. 798 p. (In Russian).
22. Thu, V.L., Nguyen, H.N. (2009). Osobennosti raspredeleniya i izmeneniya plastovyh davlenij v granitoidnyh kollektorah mestorozhdeniya «Belyj Tigr» [Peculiari- ties of distribution and change of reservoir pressures in granitoid reservoirs of the «White Tiger» field] Oil and Gas Business. 1-9. (In Russian).
23. Vershinina, S.V., Rudenok, O.V., Kulakova, N.S. Taraso- va, O.V. (2015). B37. Statisticheskie metody obrabotki dannyh [Statistical methods of data processing] tutorial. S.V. Vershinina, O. V. Rudenok, N.S. Kulakova, O. V. Tarasova. Tyumen: TyumGNGU. 160 p. (n Russian).
24. Zhdanov, S.A. (2017). Povyshchenie nefteotdachi plastov na pozdnej stadii razrabotki mestorozhdenij [Enhanced oil recovery at the late stage of field development] Bulletin of the Russian Academy of Natural Sciences. T. 17. 5. 8-10. (In Russian).
Published
2022-09-25
How to Cite
Maharramov, F., KаrimovV., & Sharifov, J. (2022). On the assessment of the diversity of coefficients of oil recovery from developed objects. Journal of Geology, Geography and Geoecology, 31(3), 513-520. https://doi.org/https://doi.org/10.15421/112247