Positron Doppler Broadening Study of Clays and Shale Samples

ORAL

Abstract

A previous detailed positron spectroscopy study of well-characterized reservoir rocks (carbonates and sandstones) has demonstrated the usefulness of positron Doppler Broadening spectroscopy in characterizing rocks [1]. The commonly measured S and W parameter were shown to be reproducible bulk properties of the rocks. A follow-up study has been undertaken to investigate clay and shale samples. While clay and shale are more complex and more heterogeneous than the reservoir rocks, it is believed that positron lifetime and Doppler broadening spectroscopy can help to characterize and distinguish the various samples and perhaps provide new useful insights into these materials. An overview of the Doppler broadening spectroscopy results will be presented and discussed for five well defined clay standards, (Na and Ca Montmorilinite, Smectite and Kaolin) and a variety of shale samples, which typically consist of mixtures of carbonate, silica and clay as well as organic carbon. The results include the usual S and W parameters as well as momentum distribution ratios of samples to standards such as Si and SiO2. \\[4pt] [1] J.M. Urban-Klaehn and C. A. Quarles, Journal of Applied Physics 86 (1999)355.

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Authors

  • Fnu Ameena

    Texas Christian University

  • Hanu Arava

    University of Houston, University of Texas at Brownsville, None, Univ of Texas, San Antonio, University of Texas at El Paso, Univ of Arizona, Department of Physics and Astronomy and Center for Gravitational Wave Astronomy, University of Texas at Brownsville, Laboratoire des Mat\'eriaux Avanc\'es, Universit\'e Claude Bernard Lyon 1, UTEP, University of Texas, Austin, University of Texas at Austin, Institute for Astronomy, Russian Academy of Sciences, University of Texas at Arlington, The University of Texas at Arlington, MIT, U. Mass. Dartmouth, Texas A{\&}M University, Texas Christian University, Laboratoire des Mat\'erieux Avanc\'es B\^atiment Virgo, Ion Beam Materials Laboratory, Los Alamos National Laboratory, Texas A\&M University, Accelerator Research Laboratory, University of Florida, The Ohio State University, Yale University, University of Guelph, Canada, Armagh Observatory, NASA-Ames, NASA-Goddard, Texas A\&M University-Commerce, Texas A\&M University, Hanyang University, Texas A\&M Univ, Department of Pharmacy, Mazandaran University of Medical Sciences, Sari, Iran, Physics Department, Texas State University at San Marcos

  • Hanu Arava

    University of Houston, University of Texas at Brownsville, None, Univ of Texas, San Antonio, University of Texas at El Paso, Univ of Arizona, Department of Physics and Astronomy and Center for Gravitational Wave Astronomy, University of Texas at Brownsville, Laboratoire des Mat\'eriaux Avanc\'es, Universit\'e Claude Bernard Lyon 1, UTEP, University of Texas, Austin, University of Texas at Austin, Institute for Astronomy, Russian Academy of Sciences, University of Texas at Arlington, The University of Texas at Arlington, MIT, U. Mass. Dartmouth, Texas A{\&}M University, Texas Christian University, Laboratoire des Mat\'erieux Avanc\'es B\^atiment Virgo, Ion Beam Materials Laboratory, Los Alamos National Laboratory, Texas A\&M University, Accelerator Research Laboratory, University of Florida, The Ohio State University, Yale University, University of Guelph, Canada, Armagh Observatory, NASA-Ames, NASA-Goddard, Texas A\&M University-Commerce, Texas A\&M University, Hanyang University, Texas A\&M Univ, Department of Pharmacy, Mazandaran University of Medical Sciences, Sari, Iran, Physics Department, Texas State University at San Marcos