Patents by Inventor Seheult Mac

Seheult Mac 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).

  • Non-pyruvylated xanthan in oil field applications utilizing high density calcium-based brines
    Publication number: 20020035040
    Abstract: A drilling fluid comprising a pyruvate-free xanthan, which may be an acetate-free pyruvate-free xanthan, and a high density calcium-based brine. Preferably the pyruvate-free xanthan is a genetically prepared pyruvate-free xanthan. A process for recovering crude oil from an oil-bearing subterranean formation by drilling the formation and using a drilling fluid comprising a pyruvate-free gum and a high density calcium-based brine.
    Type: Application
    Filed: March 21, 2001
    Publication date: March 21, 2002
    Inventors: Todd Talashek, Seheult Mac, Carter Trish, Navarrete Reinaldo, Chang Helena