Open AccessANALYSIS OF FRACTION CONTENTS IN ROCK SCRATCH TESTS FOR ESTIMATING THE ANGLE OF INTERNAL FRICTION FOR THE SEDIMENTARY COVER OF THE KOVYKTA FIELD
Author(s) -
K. V. Toropetsky,
Г А Борисов,
А. С. Смирнов,
A. V. Nosikov
Publication year - 2021
Publication title -
geodinamika i tektonofizika
Language(s) - English
Resource type - Journals
ISSN - 2078-502X
DOI - 10.5800/gt-2021-12-3s-0551
Subject(s) - geology , sedimentary rock , drilling , paleozoic , borehole , cover (algebra) , petrology , sampling (signal processing) , core (optical fiber) , mineralogy , petroleum engineering , geochemistry , geomorphology , geotechnical engineering , detector , engineering , mechanical engineering , telecommunications , electrical engineering
The article describes the possibility of using the granulometric analysis of rock cuttings formed in controlled core scratching tests to estimate the angle of internal friction. The study object is the Kovykta gas-condensate field (GCF) that occupies a wide area in the southeastern part of the Irkutsk amphitheater of the Siberian platform. This uniquely complex geological structure holds significant reserves of hydrocarbons. Its sedimentary cover is composed of the Vendian – lower Paleozoic and partly Riphean formations. Their total thickness exceeds 6000 m, as estimated from the new seismic survey data [Vakhromeev et al., 2019]. The sedimentary cover of the Kovykta GCF has been studied by surface and borehole geophysical techniques, remote sensing and geostructural methods, in combination with the tectonophysical approach [Seminsky et al., 2018] based on drilling data, including standard and special core sampling data.