Patents by Inventor Jan Gromsveld

Jan Gromsveld 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).

  • Sealant composition comprising a crosslinkable material and a reduced amount of cement for a permeable zone downhole
    Publication number: 20060167133
    Abstract: A sealant composition for servicing a wellbore, comprising a crosslinkable material, a crosslinking agent, a fluid loss control additive, water, and a cement present in an amount in a range of from about 0% to about 50% by weight of the sealant composition. A method of preparing a sealant composition, comprising combining a crosslinkable material, a crosslinking agent, a fluid loss control additive, water, and a cement, and controlling the amount of cement in the sealant composition such that the sealant composition has a gel time greater than or equal to about 4 hours when exposed to ambient temperatures in a wellbore.
    Type: Application
    Filed: January 24, 2005
    Publication date: July 27, 2006
    Inventors: Jan Gromsveld, Fred Arkesteijn, Diederik van Batenburg, Jip van Eijden