Patents by Inventor Donald Wallace Ekdahl

Donald Wallace Ekdahl 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).

  • Apparatus and method to obtain representative samples of oil well production
    Patent number: 6499344
    Abstract: A well tester adapted to select among members of an oil well family to provide a purged and clean vessel to receive samples of well production that include gas and oil, and by selective use of production pressure and lease water under pressure, allow for the separation and separate measure of the oil and gas, and optionally to provide for improved sampling of production fluids with high gas/oil ratios.
    Type: Grant
    Filed: April 9, 2001
    Date of Patent: December 31, 2002
    Inventors: Donald C. Nelson, Donald Wallace Ekdahl
  • Apparatus and method to obtain representative samples of oil well production
    Publication number: 20020020215
    Abstract: A well tester adapted to select among members of an oil well family to provide a purged and clean vessel to receive samples of well production that include gas and oil, and by selective use of production pressure and lease water under pressure, allow for the separation and separate measure of the oil and gas, and optionally to provide for improved sampling of production fluids with high gas/oil ratios.
    Type: Application
    Filed: April 9, 2001
    Publication date: February 21, 2002
    Inventors: Donald C. Nelson, Donald Wallace Ekdahl