Application of seismic methods for estimating the perspective of oil and gas potential of the sediments of the paleozoic basement of the western siberian plate

Aleksandra A. Volkova, Vitaly P. Merkulov

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The relevance of the research is caused by the need to increase the raw potential of fields in Western Siberia, confined to pre8Jurassic deposits, with minimal additional exploration costs. This possibility is associated with the dramatic development of seismic survey techno8 logy in recent years. Modern 3D seismic survey allows tracing the characteristic features of the geological structure of the Paleozoic de8 posits, which were impossible to distinguish on 2D profile seismic sections. To obtain the most objective results, it is advisable to use a set of methods that include, in addition to seismic prospecting, methods of well logging. The main aim of the research is to identify promising areas for development of the pre8Jurassic complex according to seismic data on the example of one of the fields in Tomsk region, confined to the Paleozoic basement of Western Siberia. Objects of research are deposits of the Paleozoic basement of the southeastern part of the West Siberian Plate, characterized by a com8 plex material composition of rocks, a folded8block tectonic structure, the presence of natural fracturing of carbonate reservoirs, and po8 rous8vuggy8fractured reservoir rock. Methods: seismic attribute analysis, seismic facies analysis, integration of seismic and results of well data interpretation. Results. The authors have carried out the analysis of spatial changes in seismic attributes, on the basis of which zones of increased frac8 turing were identified and the prevailing direction of fracture systems was assessed. The use of seismic facies analysis allowed identify8 ing the confinement of areas of increased density of fractures to rocks with improved reservoir properties. The scheme developed for the oil and gas potential of the Paleozoic deposits on the example of one of the fields in Western Siberia is in satisfactory agreement with the results of geophysical well studies and data from a laboratory core study.

Original languageEnglish
Pages (from-to)156-162
Number of pages7
JournalBulletin of the Tomsk Polytechnic University, Geo Assets Engineering
Volume330
Issue number3
DOIs
Publication statusPublished - 1 Jan 2019

Keywords

  • Natural fracturing
  • Paleozoic
  • Pre8Jurassic basement
  • Seismic and well data integration.
  • Seismic fracture extraction methods

ASJC Scopus subject areas

  • Materials Science (miscellaneous)
  • Fuel Technology
  • Geotechnical Engineering and Engineering Geology
  • Waste Management and Disposal
  • Economic Geology
  • Management, Monitoring, Policy and Law

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