Patents by Inventor Niels van der Werff

Niels van der Werff 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).

  • Sealing composition
    Patent number: 6875729
    Abstract: A method and sealing composition is provided for sealing a subterranean zone penetrated by a well bore, wherein the sealing composition comprises a mixture of cementitious material, cross-linkable material, and sufficient water to form a slurry.
    Type: Grant
    Filed: June 4, 2002
    Date of Patent: April 5, 2005
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Marco L. Verlaan, Niels van der Werff
  • Sealing composition
    Publication number: 20030224946
    Abstract: A method and sealing composition is provided for sealing a subterranean zone penetrated by a well bore, wherein the sealing composition comprises a mixture of cementitious material, cross-linkable material, and sufficient water to form a slurry.
    Type: Application
    Filed: June 4, 2002
    Publication date: December 4, 2003
    Applicant: Halliburton Energy Services, Inc.
    Inventors: Marco L. Verlaan, Niels van der Werff