Hailun Ni obtained her B.S. degree with honor and M.S. degree from Energy Resources Engineering department at Stanford University and is currently a third year Ph.D. student in the Benson Lab. Her thesis focuses on characterizing and predicting the amount of CO2 capillary heterogeneity trapping as well as CO2 snap-off trapping through both experiments and simulation. She conducts CO2/water coreflooding experiments at realistic reservoir conditions in order to see how different degrees and types of heterogeneity in a rock core affect its post-imbibition CO2 trapping ability. She is also in the process of developing a reduced physics simulator in Matlab based on macroscopic percolation algorithm in order to match and predict experimental results.