Patents by Inventor Israel Heilweil

Israel Heilweil 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).

  • High temperature stable aqueous brine fluids viscosified by N-heterocyclic organophosphorus compounds
    Patent number: 4481120
    Abstract: There is provided an aqueous brine fluid containing an N-heterocyclic organophosphorus compound which serves to increase the viscosity thereof. These viscosified brine fluids are particularly useful in drilling operations, most especially as solids-free drilling, completion, packer and workover fluids for drilling operations involving deep wells.
    Type: Grant
    Filed: May 2, 1983
    Date of Patent: November 6, 1984
    Assignee: Mobil Oil Corporation
    Inventor: Israel Heilweil