The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 18, 2009
Filed:
Apr. 21, 2006
Chester Ledlie Sandberg, Palo Alto, CA (US);
Thomas David Fowler, Houston, TX (US);
Harold J. Vinegar, Bellaire, TX (US);
Willen Jan Antoon Henri Schoeber, Houston, TX (US);
Chester Ledlie Sandberg, Palo Alto, CA (US);
Thomas David Fowler, Houston, TX (US);
Harold J. Vinegar, Bellaire, TX (US);
Willen Jan Antoon Henri Schoeber, Houston, TX (US);
Shell Oil Company, Houston, TX (US);
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.