Publications de Roman Makhnenko

Quantification of Viscous Creep Influence on Storage Capacity of Caprock

Lyesse Laloui, Roman Makhnenko, Ludovic Räss

In the light of growing concerns for the climate change, it is of particular interest for governments to encourage efficient capture and safe storage of large amounts of carbon dioxide in the subsurface. In this perspective and in order to accurately predi ...

2017

Chemical Influence of Pore Pressure on Brine Flow in Clay-Rich Material

Roman Makhnenko, Etienne André Cassini, Danila Mylnikov

Hydromechanical properties of shales are complex due to the involved ma-terial structure, with the solid matrix being mainly formed by swelling clays and porosity dominated by nanometer scale tortuous voids with large aspect ratios. Intrinsic permeability ...

Springer International Publishing2017

Hydromechanical Aspects of CO2 Breakthrough into Clay-rich Caprock

Lyesse Laloui, Victor Vilarrasa Riano, Roman Makhnenko, Danila Mylnikov

Caprock formations are intended to prevent upwards carbon dioxide (CO2) migration to the surface during CO2 geological storage. Caprock interaction with CO2, as well as its potential consequences, requires to be predicted, and thus, need to be studied expe ...

Elsevier2017

Elastic and inelastic deformation of fluid-saturated rock

Roman Makhnenko

In situ rock is often saturated with fluid, the presence of which affects both elastic parameters and inelastic deformation processes. Techniques were developed for testing fluid-saturated porous rock under the limiting conditions of drained (long-term), u ...

Royal Soc2016

Paul-Mohr-Coulomb failure surface of rock in the brittle regime

Roman Makhnenko

The Paul-Mohr-Coulomb failure criterion includes the intermediate principal stress sigma(II) and friction angles at the limiting stress states of sigma(II)= sigma(III) and sigma(II) = sigma(I), where sigma(I) and sigma(III) are major and minor principal st ...

Amer Geophysical Union2015

Dilatant hardening of fluid-saturated sandstone

Roman Makhnenko

The presence of pore fluid in rock affects both the elastic and inelastic deformation processes, yet laboratory testing is typically performed on dry material even though in situ the rock is often saturated. Techniques were developed for testing fluid-satu ...

Amer Geophysical Union2015

Poroelastic behavior of Calcarenite for the purposes of geologic CO2 storage

Lyesse Laloui, Roman Makhnenko

Geologic CO2 sequestration is considered to be the most promising technique to reduce the concentration of greenhouse gases in the atmosphere. Among all the storage options, deep saline aquifers have the greatest potential and due to their worldwide occurr ...

2014