Published March 2022, Pg. 4-9

Section: Geology and geophysics

UOT: 550.8:553.98

DOI: 10.37474/0365-8554/2022-03-4-9

Specification of structural-tectonic configuration and geological risks in the estimation of reserves in Darvin kupesi field

S.O. Heydarli - “Oil-Gas Scientific Research Project” Institute

Based on the newly drilled wells, the paper specifies structural-tectonic properties of Darvin kupesi field. Despite the long-term development of the field, numerous improvements have been revealed. New wells have been drilled during last years, on the basis of which geological structure of the field has been defined. Correlation schemes and geological profiles have been developed by means of new wells. Stratigraphic borders have been specified based on the correlation schemes. The structural map has been developed, the sites and forms of faults defined and the reserves by Girmaki suite and Lower Girmaki horizons calculated as well. The main objects are Girmaki and Lower Girmaki suites, which, in their turn, are divided into several horizons. Water-oil contour and oil area have been defined for both formations. Oil reserves by blocks have been estimated via С₁ and С₂ categories. The risk bar graphs and diagrams of sensitivity analysis have been developed for field reserves. For conducting analysis, at first the values of input parameters have been entered. As a result, a graph of distribution of oil reserves has been specified and Р 90, Р 50, Р 10 marks obtained. Sensitivity analysis has been carried out for definition of parameters, which will significantly affect the process of field development. The affect percentage of all parameters impacting the reserves has been specified, the parameters with high effect level selected.

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