- [Ravinath] So, let me conclude by saying that one-dimensional NMR measurement B at T one, B at T two, have limited applications in shale because many things overlap making it confusing to draw some kind of carops to identify different species, to do fluid typing and try and understand value. It's very important to try to separate out the bitumen signal, which is a very heavy, viscous component from the light oil, because one is produceable, the other is not. One is a positive resource quality indicator, we want to see a lot of light oil. Lot of bitumen can produce permeability, will not by itself be, you know, producing, so it's a kind of a negative resource quality indicator, which we need to quantify and understand and evaluate, so we need to go beyond 1D. And one possibility is 2D. And the main message that I want to transmit today are 2D NMR measurements are sensitive to molecular motion, molecular mobility, and we can use that to identify different fractions in oil shale and gas shale and use it to identify the bitumen, use it to identify the oil in organic pores and inorganic pores. And we can also extend this work into routine core-log integration by doing a 2D NMR measurement down hole, and in the lab maybe with resaturated duplicate samples, and understand more about the system. So, that is all that I wanted to tell you today. I would like to conclude by thanking Matador Resources who provided the samples and were a big support for this collaboration. I would like to thank Schlumberger for letting us do this work. Petrolabs in Schlumberger, I would like to thank my coauthors again, Camilla Eric, Rick Lewis, and Steve Sinclair.