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VITRINITE REFLECTANCE - A MAJOR METHOD IN ANALYSIS OF MATURITY AND THERMAL HISTORY OF SEDIMENTS IN NORTH BULGARIA

Nikola Botoucharov

First published: 2007DOI pendingView metrics

Abstract

Vitrinite reflectance (\%Ro) analysis is the major method in definition of thermal maturity of sediments. The rock katagenetic alterations can also delineate the thermal history of well sections, structures, zones and sedimentary basins as shown in this case study for North Bulgaria. The well R-1 Dragana data modeling visualizes a local heat flow, temperature and vitrinite reflectance distribution in geological time. Additionally, the geohistory analyses define the exact period of oil and gas generation from perspective Lower-Middle Jurassic source rocks. Regional maturity mapping demonstrates some important detailes in location of “petroleum kitchen” and related hydrocarbon findings. So, the main task of the paper (using well data, computer models and maturity summary) is to underline the importance of vitrinite reflectance method (\%Ro) and show some characteristic trends in North Bulgaria.

Publication details

Title
VITRINITE REFLECTANCE - A MAJOR METHOD IN ANALYSIS OF MATURITY AND THERMAL HISTORY OF SEDIMENTS IN NORTH BULGARIA
Authors
Nikola Botoucharov
Proceedings
7th International Scientific Conference - SGEM2007
Publisher
SGEM Scientific GeoConference
Year
2007
Pages
Not available yet
ISSN
1314-2704
ISBN
954-918181-2
Language
en
Publication type
Conference Paper
Keywords
Oil and Gas Explorationheat flowmaturityoil and gas generationthermal historyvitrinite reflectance
References4

  1. Velev, V., Valčeva, A. and Gusseva, J. 1991. Oil and coal in the Lower Jurassic series from North Bulgaria. Compte rendus de l’Academie bulgare des Sciences, 44 , 8, 77-80.

  2. Petrov, P., Boyadgiev, K., Gasharov, St. and Velinov, T. 1991. Thermal field and geothermal regime in Bulgaria. Review of the Bulgarian Geological Society, vol. LII, part 1, 60-64. (In Bulgarian).

  3. Sweeney, J. and Burnham, A. 1990. Evaluation of a simple model of vitrinite reflectance based on chemical kinetics. Bull. Am. Assoc. petrol. Geol., 74, 1, 1559-1570. Šiškov, G., Salabaševa, V. and Valcheva, S. 1982. Katagenetic alteration of the vitrain particles in the Mesozoic deposits of North Bulgaria. Geologica Balcanica, 12.3, Sofia,

  4. Tissot, B. and Espitalie, J. 1975. L’evolution thermique de la matiére organique des sediments: applications d’une simulation mathématique. Revue de l’Innstitut Francais du Pétrole, 30, 743-777.

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