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Abstract
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.
Highlights
The article describes the possibility of using the granulometric analysis of rock cuttings formed in con trolled 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
Its sedimentary cover is composed of the Vendian – lower Paleozoic and partly Riphean formations
Summary
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. The article describes the possibility of using the granulometric analysis of rock cuttings formed in con trolled core scratching tests to estimate the angle of internal friction. Analysis of fraction contents in rock scratch tests for estimating the angle of internal friction for the sedimentary cover of the Kovykta field.
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