rdf-syntax-grammar
mods:
  schema location: http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
  title info:
    title: Calculation Of Permeability Based On Primary Rock Properties Of Sandstones
  name:
    name part: Phillips, Sandra.
    role:
      role term: creator
  name:
    name part: Berg, R. R.
    role:
      role term: degree supervisor.
  type of resource: software, multimedia
  genre: Undergraduate thesis
  origin info:
    place:
      place term: txu
    date issued: 1979
    issuance: monographic
  language:
    language term: eng
  physical description:
    form: electronic
    extent: 1 online resource (102 pages).
  abstract: Permeability is a function of the primary rock properties of composition, texture, and sedimentary structures. For quartzose sandstones, the textural elements are the most important in determining both porosity and permeability. An empirical expression for permeability has been derived by Berg (1970). This equation assumes that permeability is largely a function of rectilinear pore size as determined by mean grain size, sorting expressed by deviation of grain size distribution, mean grain shape, and grain packing. The equation expresses permeability as a function of the square of the median grain size, of the fifth power of porosity, and of the phi percentile deviation. The equation was derived to approximate maximum permeability of well-sorted, highly-quartzose sandstones of 30 to 40 percent porosity. Application of the equation to a variety of reservoir sandstones has yielded considerable success. The four major groups tested were Muddy, Frio, Frontier, and Woodbine-Paluxy sandstones. These sandstones represent a variety of depositional environments and exhibit considerable compositional and textural variation. The sandstones are medium grained to very fine grained and have average quartz contents ranging from 40 to 90 percent. Cement and matrix content ranges from less than 1 percent up to a maximum of 33 percent in some samples. Porosities range from 3 to 43 percent, and measured permeabilities range from 0.04 millidarcys to a maximum of 26.0 darcys. Sandstone samples were from subsurface cores with the exception of the Woodbine-Paluxy sandstones which were outcrop samples. Consistent, reasonably accurate permeabilities were calculated for the clean, well-sorted, highly-quartzose, high-porosity Muddy Sandstone from Bell Creek field, Montana. The equation was also applied with good results to more poorly-sorted sandstones of less than 30 percent porosity which are not highly quartzose, such as the Frio 19B sandstone at Seeligson field. Furthermore, the equation w…
  target audience: specialized
  note: Undergraduate thesis written for Program year: 1978/1979
  note: Digitized from print version held at Pickle Center High Density Storage, barcode 24829660
  note: University Undergraduate Fellows, sponsored by Geology Department.
  note: HDR
  subject:
    topic: Berg's equation
  subject:
    topic: oil exploration
  subject:
    topic: permeability
  subject:
    topic: porosity range
  subject:
    topic: reservoir sandstones
  identifier: https://oaktrust.library.tamu.edu/handle/1969.1/CAPSTONE-PhillipsS_1979
  record info:
    record creation date: 231116
    record change date: 20240301201847.4
    record identifier: in00004780736