Patents by Inventor U. Roger Weems

U. Roger Weems 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).

  • Drilling fluids containing an alkali metal formate
    Patent number: 6818595
    Abstract: A drilling fluid or mud is described wherein the drilling fluid contains at least one alkali metal formate or monovalent carboxylic acid salt. The drilling fluid preferably further contains at least one emulsifier or surfactant and at least one hydrocarbon-based fluid. The drilling fluids of the present invention can contain other conventional ingredients. The present invention permits drilling fluids to be essentially solids free due to the use of the alkali metal formate.
    Type: Grant
    Filed: February 14, 2002
    Date of Patent: November 16, 2004
    Assignee: Cabot Specialty Fluids, Inc.
    Inventors: William J. Benton, John A. Toups, U. Roger Weems
  • Drilling fluids containing an alkali metal formate
    Publication number: 20030162669
    Abstract: A drilling fluid or mud is described wherein the drilling fluid contains at least one alkali metal formate or monovalent carboxylic acid salt. The drilling fluid preferably further contains at least one emulsifier or surfactant and at least one hydrocarbon-based fluid. The drilling fluids of the present invention can contain other conventional ingredients. The present invention permits drilling fluids to be essentially solids free due to the use of the alkali metal formate.
    Type: Application
    Filed: February 14, 2002
    Publication date: August 28, 2003
    Inventors: William J. Benton, John A. Toups, U. Roger Weems