Open AccessDetermination of geomechanical properties of the Jurassic and Pre-Jurassic sediments of the Tomsk region
Author(s) -
Andrei S Shadrin,
AUTHOR_ID,
Dmitrii Konoshonkin,
А. В. Антонов,
Valerii Rukavishnikov,
Daria Petrova,
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AUTHOR_ID,
AUTHOR_ID,
AUTHOR_ID
Publication year - 2022
Publication title -
izvestiâ vysših učebnyh zavedenij. gornyj žurnal
Language(s) - English
Resource type - Journals
eISSN - 2686-9853
pISSN - 0536-1028
DOI - 10.21440/0536-1028-2022-1-34-44
Subject(s) - lithology , geology , geomechanics , petrophysics , drilling , geophysics , geotechnical engineering , petrology , porosity , mechanical engineering , engineering
. Geomechanical properties of rocks are used as input data for geomechanical modeling and subsequent calculations of hydraulic fracturing design, assessment of sand production of wells, calculation of drilling stability, assessment of fracturing, and other exploration and development of oil and gas fields related to geomechanics. The quality of the calculations performed significantly depends on the accuracy of determining the geomechanical properties of rocks. However, their accurate determination requires a large volume of core studies, which are often absent. This paper summarizes the correlation between geophysical parameters and geomechanical properties for a series of fields in the Tomsk region, located in the southern part of the Nyurolskaya depression. The above correlations can be used in other fields with similar geological conditions, where the research volume is low or laboratory research is absent. Research objective. Generalization of correlations in the form of diagrams between geophysical parameters and geomechanical properties (Young’s modulus, Poisson’s ratio, ultimate strength, and tangent of the angle of internal friction) for a series of fields in the Tomsk region located in the southern part of the Nyurolskaya depression. Methods of research. The proposed schemes are based on laboratory studies of core samples of various lithotypes, as well as statistical analysis of the data obtained. Research results. The result of the work is the scheme for calculating the mechanical properties. According to the proposed schemes, first, the lithology of the described rocks is considered; then, based on the available set of geophysical studies, a correlation dependence with the specified uncertainty interval is selected. Conclusion. The results of the work conducted make it possible to carry out geomechanical modeling in the shortage or absence of laboratory core studies for the field studied. It is recommended to clarify the proposed correlations when conducting laboratory studies for the object under study.