Detailing the Pore Structure of Productive Intervals of Oil Wells Using the Color 3D Imaging

Vladislav B. Zaalishvili (), Adalat B. Hasanov, Elmeddin Y. Abbasov and Dildar N. Mammadova
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Vladislav B. Zaalishvili: Geophysical Institute, Vladikavkaz Scientific Center RAS (GPI VSC RAS), 362002 Vladikavkaz, Russia
Adalat B. Hasanov: Oil and Gas Institute, ANAS, Azerbaijan 9, F.Amirov Str., Baku AZ1000, Azerbaijan
Elmeddin Y. Abbasov: Socar, Mining Geophysics Department, Heydar Aliyev, 83A, Baku AZ1033, Azerbaijan
Dildar N. Mammadova: Institute of Geology and Geophysics, ANAS, H.Javid Ave. 119, Baku AZ1143, Azerbaijan

Energies, 2022, vol. 16, issue 1, 1-8

Abstract: The article describes an approach to expanding the methodology for applying hydraulic fracturing in oil fields by adding the possibilities of 3D modeling with color imaging of the pore structure of the productive intervals of wells. As an applied example, the geological and geophysical section of the productive level of one of the wells of the Moscudinskoye oil field, with known data on the integrated interpretation of the results of well-logging and microcomputer tomography, was chosen. According to well-logging data, the productive reservoir in the analyzed section of the section is characterized by a high degree of heterogeneity. Tomographic studies of a full-size core made it possible to identify four lithotypes here with different pore structure features. Accounting for the identified reservoir heterogeneity, as well as data on the thickness and other characteristics of reservoir properties of individual lithotypes that make up the section, made it possible to significantly increase the detail of the final geological model of the wellbore section. A distinctive feature of this final geological model is the use of the method of enlargement of the initial data array by adding intermediate values that were calculated theoretically. The visibility of the final geological model of the borehole walls is provided by color 3D imaging of the calculated data of the enlarged massif and makes it possible to judge the presence of areas with good and weak fluid conductivity on the lateral surface of the borehole walls. According to this model, intrastratal transverse and longitudinal fluid-conducting “corridors” are observed in the circumwell zone that determine the hydro-dynamic movements of natural and artificial fluids in the space of productive reservoirs.

Keywords: 3D imaging; hydraulic fracturing; lithotype; oil wells; well logging; limestones; porosity; oil field (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
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