Development of petrophysical modeling based on effective porosity and phase permeabilities of reservoirs (Binagadi Oil Field as a case study)
Pashayev N.V.
Azerbaijan State Oil and Industry University, Azerbaijan 34, Azadlig ave., Baku, AZ1010: namat.pashayev@mail.ru
DOI: 10.33677/ggianas20240100118
Summary
The paper presents the results of studying the change in the oil saturation and porosity coefficients of the productive strata of the Underkirmaki suite (UKS) of the Binagadi field one hundred and ten years after the start of its development. Considering that practical methods for quantifying the current oil saturation factor in cased wells have not yet been developed, in the determinations, logging data and core data were mainly used for wells during their operation. Based on new data from correlated well sections the dependence of Kper on Kp was plotted for all reservoir intervals identified in the well sections. It has been established that there are no initial contours of oil content in the study area. To assess the influence of lithological features on the porosity and permeability properties of reservoirs, paired dependencies between Kper and Kp for the studied horizon were established. The resulting dependence is characterized by a high closeness of the relationship (R=0.85). In order to study the spatial distribution of reservoirs over the area (wells), as well as porosity, permeability and oil saturation, three-dimensional grids of the geomodel were created. As a result, a practical use of a petrophysical model is shown, the effectiveness of which lies in the fact that it is comparable with well log data, which makes it possible to dissect intervals where there are no well logs with great certainty.
Keywords: logging, well, porosity, permeability, electrical resistivity
REFERENCES
Abasov M.T., Kondrushkin Yu.M., Aliyarov R.Yu., Krutix L.G. Study and forecasting of the parameters of complex natural oil and gas reservoirs in the South Caspian depression. Baku, “Nafta-Press”, 2007, 217 p.
Abasov M.T Aliyarov R.Yu., Jalalov G.I., Ramazanov R.A. Method of evaluation of relative phase permeability change of rocks-collectors during their development. Moscow, Geology, geophysics and development of oil and gas fields, No. 4, 2010, pp. 51-57.
Buryakovski L.A., Jafarov I.S., Janavanshir R.D. Modeling of petroleum geology systems. Nedra. Moscow, 1990, 295 p.
Hasanov A.B., Melikov Kh.F., Seyidov V.M. Estimation of distribution in space by a complex of geophysical and petrophysical data. Karotajnik, Tver, No. 7(172), 2008, рp. 50-57.
Gutman I.S. Methods for calculating reserves and estimating oil and gas resources. Nedra. Moscow, 2017, 363 р.
Zinchenko V.S. Petrophysical foundations of hydrogeological and engineering-geological interpretation of geophysical data. AIS. Moscow, 2005, 387 р.
Kovalenko K.V. Petrophysical support system for modeling oil and gas deposits based on the effective porosity of granular reservoirs. Moscow, 2015, 49 p.
Pashayev N.V., Khalilova L.N., Pashayeva Sh.V. Geological assessment of the Kirmaki and Underkirmaki suites of the Binagadi field according to well logging and petrophysical data. Geophysical news in Azerbaijan, No. 1-2, 2017, Baku, pp. 22-26.
Nooraiepour M., Mondol N.H., Hellevang H. Permeability and physical properties of semi-compacted fine-grained sediments – A laboratory study to constrain mudstone compaction trends. Marine and Petroleum Geology, Vol. 102, No. B12, 2019, pp. 590-603.
DOI: 10.33677/ggianas20240100118