섬유

tight gas sands - permeability, pore structure, and clay

  • 출판일1999.03
  • 저자
  • 서지사항
  • 등록일 2016.11.02
  • 조회수 261
gas permeability has been measured on a suite of cores from the spirit river tight gas sand of western alberta and on two samples from the cotton valley formation of east texas. using nitrogen as the mobile fluid, the author has measured permeability as a function of partial water saturation at in-situ levels of pore pressure and confining pressure. samples from both locations show strong dependence of permeability (k) on effective pressure and on the degree of water or brine saturation. the validity of darcy's law in the microdarcy range has been verified in a dry spirit river sample extensive thin-section, x-ray diffraction and scanning electron microscope (sem) studies have been conducted. the primary clays in spirit river and cotton valley cores are chlorite and illite. 7 refs
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