Patents by Inventor Willen Jan Antoon Henri Schoeber

Willen Jan Antoon Henri Schoeber 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).

  • In situ conversion process utilizing a closed loop heating system
    Patent number: 7575052
    Abstract: An in situ conversion system for producing hydrocarbons from a subsurface formation is described. The system includes a plurality of u-shaped wellbores in the formation. Piping is positioned in at least two of the u-shaped wellbores. A fluid circulation system is coupled to the piping. The fluid circulation system is configured to circulate hot heat transfer fluid through at least a portion of the piping to form at least one heated portion of the formation. An electrical power supply is configured to provide electrical current to at least a portion of the piping located below an overburden in the formation to resistively heat at least a portion of the piping. Heat transfers from the piping to the formation.
    Type: Grant
    Filed: April 21, 2006
    Date of Patent: August 18, 2009
    Assignee: Shell Oil Company
    Inventors: Chester Ledlie Sandberg, Thomas David Fowler, Harold J. Vinegar, Willen Jan Antoon Henri Schoeber