Patents Represented by Attorney, Agent or Law Firm C. Clark Doughery, Jr.
  • Environmentally acceptable well cement fluid loss control additives, compositions and methods
    Patent number: 6405801
    Abstract: Environmentally acceptable well cement fluid loss control additives, cement compositions including the additives and methods of using the compositions are provided. The environmentally acceptable fluid loss control additives are comprised of ethoxylated hydroxyethylcellulose having a reduced molecular weight.
    Type: Grant
    Filed: December 8, 2000
    Date of Patent: June 18, 2002
    Assignees: Halliburton Energy Services, Inc., Hercules Incorporated
    Inventors: Jan Pieter Vijn, Bach Dao, Mohand Melbouci