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A generalized image and boundaries of the Bazhenov Formation; constraints from well log data for salym-type sections (West Siberia)

V. V. Lapkovsky, V. A. Kontorovich and N. E. Shmelev
A generalized image and boundaries of the Bazhenov Formation; constraints from well log data for salym-type sections (West Siberia)
Russian Geology and Geophysics (September 2018) 59 (9): 1129-1136

Abstract

A technique akin to Galton's composite portraiture is suggested for creating a generalized image of a stratigraphic unit based on well log data from a group of well sections. The procedure begins with superimposing stratigraphically equivalent section points according to pairwise correlation models followed by weighted summation of similar logs. The superimposition highlights persistent common features of the sections, while their minor individual details become suppressed. A generalized model of the Bazhenov Formation in the Salym area has been constructed from gamma-ray, apparent resistivity, and self-potential logs. Radioactivity and resistivity anomalies, which are often used as constraints on the Bazhenov Formation boundaries, show a significant spatial discrepancy. According to the correlation, the formation volume in each well depends on the depth interval corresponding to the hypostratotype. The results were used to map the Bazhenov Formation thickness and its standard deviation, as well as average values of different logs.


ISSN: 1068-7971
Serial Title: Russian Geology and Geophysics
Serial Volume: 59
Serial Issue: 9
Title: A generalized image and boundaries of the Bazhenov Formation; constraints from well log data for salym-type sections (West Siberia)
Affiliation: Russian Academy of Sciences, Siberian Branch, A.A. Trofimuk Institute of Petroleum Geology and Geophysics, Novosibirsk, Russian Federation
Pages: 1129-1136
Published: 201809
Text Language: English
Publisher: Allerton Press, New York, NY, United States
References: 20
Accession Number: 2022-003814
Categories: Economic geology, geology of energy sourcesApplied geophysics
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. sects.
N50°00'00" - N82°00'00", E62°00'00" - E114°00'00"
N60°00'00" - N63°00'00", E68°00'00" - E72°00'00"
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2022, American Geosciences Institute. Reference includes data from GeoScienceWorld, Alexandria, VA, United States
Update Code: 2022
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