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. 26, 2003
Filed:
Apr. 24, 2001
Scott Lee Wellington, Belliare, TX (US);
Harold J. Vinegar, Houston, TX (US);
Eric Pierre de Rouffignac, Houston, TX (US);
Ilya Emil Berchenko, Friendswood, TX (US);
Kevin Albert Maher, Bellaire, TX (US);
John Michael Ward, Katy, TX (US);
Robert Martijn Van Hardeveld, Amsterdam, NL;
Shell Oil Company, Houston, TX (US);
Abstract
A coal formation may be treated using an in situ thermal process. A mixture of hydrocarbons, H , and/or other formation fluids may be produced from the formation. Heat may be applied to the formation to raise a temperature of a portion of the formation to a synthesis gas production temperature. A synthesis gas generating fluid may be introduced into the portion. Synthesis gas may be produced from the formation Synthesis gas may be used as a feed stream in an ammonia synthesis process. Ammonia may be used as a feed stream in a urea synthesis process.