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  1. Intro and Outline

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- [Wei-Shan] Today I'm going to talk about the using neutron and x-ray imagings and the small angle scatterings to study heterogeneity structures of the shale rocks. And this project is collaborations between Aramco Service Company and the National Institute of Standard Technology, the local NIST, and the University of Delaware. So in co-authorship, Dr. Yun Liu and Dr. Jin Hong Chen are all, are both main co-authors in this paper and the Dr. Yun Liu is also here today with me and we hope to cover all the questions in the end, especially if you have any questions about how to build out the collaborations with researchers in NIST and how the NIST consultation works and he's the best person to ask. Okay, so... So I want to give first my academic backgrounds. So I get the Master in the Bachelor degrees in chemical engineering in Tsing-Hua University in Taiwan and there I studied the face diagrams, face behaviors of the diblock diploma, complex with surfactants. And I get my PhD in MIT and there's I studied the cement structure, structural concrete, and cements and also the face behaviors of the misosolutions composed of the diblockopolyma, triblockpolymas. And then I come to NIST and studied several gas and shale rock related projects. Of course, today I'm going to focus on this. And the I will give the outline first. First I will introduce what neutrons are good at. NIST has a reactor on site so I am have advantage to take advantage of it. And then I will talk about NIST neutron and x-ray tomography the so called NeXT systems and how to use is to study the 3D structure of the shale rock. And this is the first time shale rock study by this technique. And also, I will talk about the new theory we built, the so called generalized porod's scattering law method, GPSLM, and how to use is to study the surface heterogeneity of the kerogens. So kerogen is a organic part of the shale rock. So its been saying that most of the hydrocarbon is stored inside the pores of kerogen so its important to know the structure and property of kerogens. And if we have time in the end, then I will talk about hydrocarbons confined in the nanopores. We know that kerogen has a lot of nanopores and this course has a pore size distribution so I will talk about the pore size effect. So this outline give us a first we focus on the core structures of the shale rocks and then we narrow down to focus on the kerogens, and then in the kerogen we talk about the surface heterogeneity and then I also talk about pore size distribution. So all this are related to the heterogeneous structures of the shale rock.