Известия Томского политехнического университета: Инжиниринг георесурсов (Feb 2023)

ANALYSIS OF METHODS FOR CONSTRUCTING A GEOLOGICAL MODEL OF THE PRE-JURASSIC COMPLEX ON THE EXAMPLE OF THE SEVERO-KALINOVOE DEPOSIT

  • Evgenia Yu. Lipikhina,
  • Oleg V. Yakovenko

DOI
https://doi.org/10.18799/24131830/2023/2/3780
Journal volume & issue
Vol. 334, no. 2
pp. 175 – 184

Abstract

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The relevance of the research is caused by the widespread use of geological modeling as a method for studying oil and gas deposits of the terrigenous rock complex and the Paleozoic ones. The Paleozoic complex, in comparison with the terrigenous one, has a specific geological structure and is less researched, therefore the problems of the Paleozoic are relevant for all mining companies and research institutes. The purpose of the research is to analyze methods of geological modeling that increase the level of reliability of 3D models of Paleozoic deposits. The object of the research is the Paleozoic carbonate and fractured oil productive sediments. Methods. The article considers the possibility and effectiveness of applying various methods of geological modeling of Paleozoic carbonate and fractured rocks. The methods increase the reliability of modeling and reduce the risks of not confirming the forecast indicators, using the example of the Kalinovoe and Severo-Kalinovoe deposits. The 3D modeling methods discussed in the article are applicable to other oil and gas fields with similar geological deposits. Results. Two methods of reconstructing the bedding in the geological model of the Paleozoic complex were considered (horizontal and tilted) and the advantages and disadvantages of each of them were highlighted. The necessity and effectiveness of the introduction of the additional stage of rock typification was evaluated for modeling deposits with reservoir properties that are sharply not sustained over the area. On the example of the Severo-Kalinovoe deposit, it is shown that the application of the modeling methods described in the article leads to improve accuracy of the 3D geological model. This affects the increase in the efficiency of technological and economic extraction of hydrocarbons from the objects of the pre-Jurassic complex.

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