Influence of turbostratic carbon nanostructures on electrical conductivity in shales
作者： Clifford C. Walters , Chris E. Kliewer , David N. Awwiller , Mark D. Rudnicki , Quinn R. Passey
DOI: 10.1016/J.COAL.2013.12.015
关键词: High-resolution transmission electron microscopy 、 Oil shale 、 Conductivity 、 Electron energy loss spectroscopy 、 Maturity (geology) 、 Mineralogy 、 Chemical engineering 、 Nanostructure 、 Materials science 、 Electrical resistivity and conductivity 、 Electrical conductor
摘要: Abstract Shales spanning a range of thermal maturity (~ 0.6 to > 4.5%Re) were examined by high resolution transmission electron microscopy (HRTEM) in order characterize the occurrence turbostratic carbon nanostructures. Such structures, termed Basic Structural Units (BSU), found both demineralized and whole-rock samples. Highly aromatic nanostructures pre-oil window shale verified energy loss spectroscopy (EELS). Turbostratic increase abundance with increasing their greatest frequency occurring (> 3.6%R), natural artificially matured organic rich shales that exhibit anomalously electrical conductivity well logs. We hypothesize these initially form upon oil generation, maturation, eventually become numerous enough establish mutual contact, either directly or through graphene-like sheets, so becomes conductive on macroscopic scale.
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