An integrated approach to reserves calculation in drilling and development planning

UDK: 553.98.048

DOI: 10.24887/0028-2448-2025-11-82-86

Key words: seismic exploration, seismic facies analysis, seismic class, seismic attribute, dynamic analysis, paleofacies analysis, sedimentary rock complexes, facies, Jurassic deposits, hydrocarbons, estimation of initial geological reserves

Authors: V.M. Alexandrov (Industrial University of Tyumen, RF, Tyumen); N.N. Zakirov (Industrial University of Tyumen, RF, Tyumen); V.V. Bykov (Oil and Gas Production Department Talakanneft, Surgutneftegas PJSC, RF, Surgut); S.A. Paleev (Industrial University of Tyumen, RF, Tyumen)

Recently, much attention has been paid in the specialized literature to the comprehensive study of seismic survey data, drilling data and geophysical well logging using various methodological approaches. Large-scale work is being carried out to study the features of the geological structure of productive sediments and create detailed paleofacial models of hydrocarbon deposits based on them. Increased requirements are also imposed on the assessment of the initial geological reserves of hydrocarbons. They are constantly being formed in the process of finding solutions for the increasingly complex tasks of studying hydrocarbon deposits associated with complex reservoir rocks of different genesis. At the moment, it is necessary to proceed to a differentiated calculation of the initial geological reserves of hydrocarbons using the results of paleofacial analysis, which shall enable a new approach to both assessing the oil and gas potential of individual deposit zones and planning the sequence of drilling of various zones of productive sediment and their subsequent active development. The article demonstrates an example of calculating initial geological oil reserves using this methodological approach for a Middle Jurassic reservoir in one of the fields of the West Siberian oil and gas basin (with a differentiated assessment based on identified paleofacial sediment complexes).

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