Patents by Inventor Duane Bevan Ragbir

Duane Bevan Ragbir 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).

  • FILTERCAKE REMOVAL USING EXOTHERMIC IN-SITU NITROGEN-PRODUCING REACTANTS
    Publication number: 20140290951
    Abstract: Removal of filtercake particles from a wellbore is achieved by injecting two (2) water-soluble nitrogen-containing salts and an organic acid resulting in the generation of nitrogen gas and elevated temperature.
    Type: Application
    Filed: March 27, 2014
    Publication date: October 2, 2014
    Applicant: Saudi Arabian Oil Company
    Inventors: Ali A. Al-Taq, Habeeb H. Haji, Jaffar Abdulla Saleem, Ayman R. Al-Nakhli, Duane Bevan Ragbir, Zadson De Almeida Franco