TY - GEN
T1 - Clay mineralogy of shale gas reservoirs through integrating infrared spectroscopy and X-ray diffraction
AU - Dargahi, Hanieh Jafary
AU - Rezaee, Reza
AU - Pejcic, Bobby
N1 - Publisher Copyright:
© Copyright 2013, Unconventional Resources Technology Conference (URTeC)
PY - 2013
Y1 - 2013
N2 - The composition and structure of clay minerals play a major role in controlling the physical and chemical properties of shale. Understanding the relationship between clay mineralogy and the physical parameters of shale such as the wettability, fracability, and permeability is crucial in characterizing and developing a shale reservoir. Typically, the higher the amount of clay minerals present the lower will be the material brittleness/fracability, whereas a lower clay abundance is usually associated with improved reservoir permeability. Determining the clay composition in shales is a significant challenge considering the chemical complexity and heterogeneous nature of the shale. In this paper, we report on the preliminary characterization of Permo-Triassic shale reservoir samples from the Perth Basin using Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD). The suitability and performance of FTIR and XRD for determining clay mineralogy was evaluated. Both FTIR and XRD revealed that kaolinite was the dominant clay species in most of the samples from the Permo-Triassic shale reservoir. It was shown that XRD is able to identify and quantify many different minerals in the shale samples, while FTIR helped provide complimentary information on some minerals along with information concerning the amorphous organic matter.
AB - The composition and structure of clay minerals play a major role in controlling the physical and chemical properties of shale. Understanding the relationship between clay mineralogy and the physical parameters of shale such as the wettability, fracability, and permeability is crucial in characterizing and developing a shale reservoir. Typically, the higher the amount of clay minerals present the lower will be the material brittleness/fracability, whereas a lower clay abundance is usually associated with improved reservoir permeability. Determining the clay composition in shales is a significant challenge considering the chemical complexity and heterogeneous nature of the shale. In this paper, we report on the preliminary characterization of Permo-Triassic shale reservoir samples from the Perth Basin using Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD). The suitability and performance of FTIR and XRD for determining clay mineralogy was evaluated. Both FTIR and XRD revealed that kaolinite was the dominant clay species in most of the samples from the Permo-Triassic shale reservoir. It was shown that XRD is able to identify and quantify many different minerals in the shale samples, while FTIR helped provide complimentary information on some minerals along with information concerning the amorphous organic matter.
UR - http://www.scopus.com/inward/record.url?scp=85043947124&partnerID=8YFLogxK
U2 - 10.1190/urtec2013-210
DO - 10.1190/urtec2013-210
M3 - Conference contribution
AN - SCOPUS:85043947124
SN - 9781613993026
T3 - Unconventional Resources Technology Conference 2013, URTC 2013
BT - Unconventional Resources Technology Conference 2013, URTC 2013
PB - Unconventional Resources Technology Conference (URTEC)
T2 - Unconventional Resources Technology Conference 2013, URTC 2013
Y2 - 12 August 2013 through 14 August 2013
ER -