Patents by Inventor Benjamin F. Swanson

Benjamin F. Swanson has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Determining saturation and permeability using mercury capillary pressure curves
    Patent number: 4625544
    Abstract: A method using mercury capillary pressure curves for determining various characteristics of formations. The mercury capillary pressure curve is amplified and small changes are used to compute residual saturation, permeability, Archie's exponent m and the resistivity factor F of the formation.
    Type: Grant
    Filed: January 29, 1986
    Date of Patent: December 2, 1986
    Assignee: Shell Oil Company
    Inventors: Herbert Hi-Hwa Yuan, Benjamin F. Swanson, Robert G. Stapleton
  • Estimates of permeability from capillary pressure measurements
    Patent number: 4211106
    Abstract: A method and apparatus for determining the permeability of small rock samples by mercury capillary pressure measurements. The apparatus comprises a measuring cell having a very small volume and means for measuring the displacement of mercury in a sample placed in the cell to at least one ten thousandth of the cell volume. The method comprises plotting the capillary pressure versus saturation as a percentage of bulk volume and using a nomogram to determine permeability of the sample.
    Type: Grant
    Filed: September 20, 1978
    Date of Patent: July 8, 1980
    Assignee: Shell Oil Company
    Inventor: Benjamin F. Swanson