Patents by Inventor Yeshayahu Greitzer

Yeshayahu Greitzer 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).

  • Method of and means for operating geothermal wells
    Patent number: 5372194
    Abstract: A geothermal well is operated by continuously pumping spent geothermal fluid into the well and continuously adding concentrated acid to the spent geothermal fluid, such that the concentration of acid in the fluid is in the range of 0.1% to 5%, and occasionally to 10%. Over a period of time, the spend geothermal fluid flowing through the geological formations of the geothermal field carries the dilute acid into the formations for dissolving rock and increasing the permeability thereof. If it is desired to decrease the permeability of the formations, components of drilling mud or other suitable material, are continuously added to the spent geothermal fluid.
    Type: Grant
    Filed: May 10, 1993
    Date of Patent: December 13, 1994
    Assignee: Ormat Turbines (1965) Ltd.
    Inventors: Yeshayahu Greitzer, Lucien Y. Bronicki
  • Method of and means for operating geothermal wells
    Patent number: 5054556
    Abstract: A geothermal well is operated by continuously pumping spent geothermal fluid into the well and continuously adding concentrated acid to the spent geothermal fluid, such that the concentration of acid in the fluid is in the range of 0.5% to 5%, and occasionally to 10%. Over a period of time, the spend geothermal fluid flowing through the geological formations of the geothermal field carries the dilute acid into the formations for dissolving rock and increasing the permeability thereof. If it is desired to decrease the permeability of the formations, components of drilling mud or other suitable material, are continuously added to the spent geothermal fluid.
    Type: Grant
    Filed: May 17, 1990
    Date of Patent: October 8, 1991
    Assignee: Ormat Turbines (1965) Ltd.
    Inventors: Yeshayahu Greitzer, Lucient Y. Bronicki