Estudio experimental del efecto de la inyección de CO2 en rocasacoplamiento de procesos hidrodinámicos, mecánicos y geoquímicos

Abstract

This research work has its origins on the need to find solutions to increased emissions of harmful gases to the environment. CO2 storage is the final stage of capture, transport and storage of CO2 process. This process involves the injection of CO2 in deep geological formations. That injection is directly related to the concern that greenhouse gases would have on climate. The main objective is obtaining information about hydromecanic and geochemical behaviour of rocks through the simultaneous monitoring of relevant parameters (deformation, permeability variations, geophysical indicators, etc.). The following milestones are taken into consideration: a) Design, definition and implementation of the experimental system. b) Obtainment of results. c) Qualitative and quantitative interpretation of results The experimental device used on building the injection test is the triaxial cell, with plates designed for the application of pore pressure and wave propagation. Additionally a frequency analysis study for P, S1 and S2 waves was performed, as well as a set of geomechanical tests (triaxial, simple compression, direct and indirect traction). These tests were performed in order to characterize the material before being tested.