Abstract
The elevated level of atmospheric carbon dioxide (CO2) has caused serious concern of the progression of global warming. Geological sequestration is considered as one of the most promising techniques for mitigating the damaging effect of global climate change. Investigations over wide range of length-scales are important for systematic evaluation of the underground formations from prospective CO2 reservoir. Understanding the relationship between the micro morphology and the observed macro phenomena is even more crucial. Here we show Synchrotron based X-ray micro tomographic study of the morphological buildup of Sandstones. We present a numerical method to extract the pore sizes distribution of the porous structure directly, without approximation or complex calculation. We have also demonstrated its capability in predicting the capillary pressure curve in a mercury intrusion porosimetry (MIP) measurement. The method presented in this work can be directly applied to the morphological studies of heterogeneous systems in various research fields, ranging from Carbon Capture and Storage, and Enhanced Oil Recovery to environmental remediation in the vadose zone.
Highlights
Synchrotron based micro-tomography experiments were performed at the beamline 2-BM-B of the Advanced Photon Source at the Argonne National Laboratory
The choice of X-ray energy is made with consideration of the tradeoff between the penetration capability and the image contrast
The requirement of the representativeness has set the lower limit of the sample size and, the lower limit of the X-ray energy
Summary
The ultimate goal of this study is to understand the relationship between the micro morphology and the phenomena observed at a larger length-scale, the experimental data of the well-known mercury intrusion porosimetry method
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
