Assessing The Impact Of The Interaction Supercritical CO2/insterstitial Fluid On The Nanostructure Of Caprocks By Using Adsorption Techniques. Application To The Safety Assessment Of CO2 Geological Storage | 2471
Journal of Earth Science & Climatic Change
Like us on:
Our Group organises 3000+ Global Conferenceseries Events every year across USA, Europe & Asia with support from 1000 more scientific Societies and Publishes 700+ Open Access Journals which contains over 50000 eminent personalities, reputed scientists as editorial board members.
Assessing the impact of the interaction supercritical CO2/insterstitial fluid on the nanostructure of caprocks by using adsorption techniques. Application to the safety assessment of CO2 geological storage
International Conference on Earth Science & Climate Change
David Ricardo Rhenals Garrido, Philippe Dubujet, Stephane Lafortune and Hanene Souli
CO2 storage is envisioned as a technique which reduces large quantities of CO2 rejected in the atmosphere because of many
The effectiveness of this technique is mainly related to the storage capacity as well as its safety. The safety of this operation is
primarily based on the conservation of petro-physical properties of the caprock, which prevents the transport of CO2 through it.
However when CO2 reaches the reservoir/caprock interface due to buoyancy effects, the interaction between interstitial fluid and
injected fluid creates a series of dissolution/precipitation reactions affecting the properties of containment of the caprock, which
is generally characterized by low transport properties.
This study aims to assess the impact caused by CO2/interstitial fluid interaction on the nanostructure of the caprock under
geological storage conditions. In order to do this, degradation experiments at high pressure of CO2 (83 bar) and isothermal
(55�C) conditions have been conducted using batch reactors. The sample used for these experiments is shale from the formation
Tournemire (Aveyron-France). Volumetric Techniques of adsorption at low pressure have been used in order to quantify the
changes on the sample nanostructure. The variations on the microporosity, mesoporosity and intrinsic permeability were
determined by using the methods of Dubinin-Astakov, BJH (Barret-Joney-Hallenda) and Carman-Kozney respectively.
At short time (58 days) the results show an increasing in the density of pores in a range less than 10nm, which represents an
overall increase on the petrophysical properties, suggesting that integrity of the caprock is affected by dissolution/ precipitation
David Rhenals has completed his engineering studies at national university of Colombia in 2007. Two years later, he obtains a master in geosciences at university Pierre et Marie Curie (UPMC) France. Actually, David Rhenals is a PhD student at the National School of Engineers of Saint Etienne and works in the French National Institute for Industrial Environment and Risk.
Peer Reviewed Journals
Make the best use of Scientific Research and information from our 700 + peer reviewed, Open Access Journals