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:
Mar. 21, 2017
Filed:
Jun. 22, 2015
Chevron U.s.a. Inc., San Ramon, CA (US);
Michal Okoniewski, Calgary, CA;
Damir Pasalic, Calgary, CA;
Pedro Vaca, Calgary, CA;
Gunther Hans Dieckmann, Walnut Creek, CA (US);
Donald Leroy Kuehne, Hercules, CA (US);
Miguel Vigil, Richmond, CA (US);
Stein J. Storslett, Bakersfield, CA (US);
CHEVRON U.S.A. INC., San Ramon, CA (US);
Abstract
A system for in-situ heating of a subsurface formation for the extraction of hydrocarbons in underground deposits is disclosed. The system is configured to heat the underground deposit of hydrocarbons to facilitate fluid flow and hydrocarbon recovery from the underground deposit. The system has an antenna formed from a coaxial transmission line having an annular space between the transmission line outer conductor and the inner conductor and having one or more periodic aperture arrangements along the axial length of the outer conductor. A method for in-situ heating of a subsurface formation for recovering hydrocarbons contained therein is also disclosed. The method comprises: providing an antenna in the subsurface formation; providing electromagnetic RF power to the antenna for heating at least a portion of the subsurface formation.