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:
May. 29, 1979
Filed:
Jan. 23, 1978
Joseph C Allen, Bellaire, TX (US);
Texaco Inc., White Plains, NY (US);
Abstract
A two-step process for recovering hydrocarbons from a subterranean formation in which the formation is first heated by injecting steam at a temperature of about 500.degree. to about 1500.degree. F. through an injection well and in a second step a mixture of carbon monoxide and hydrogen is pressured into the formation via the injection well where in the heated formation reaction with the carbon monoxide and steam takes place forming additional hydrogen and carbon dioxide and finally hydrocarbons are recovered via a production well. Optionally, after injection of the mixture of carbon monoxide and hydrogen into the formation has been terminated, the heat stored in the formation may be recovered by injecting water, as a drive fluid into the formation via the injection well. The injected water may contain a small amount of a sulfated interfacial tension reducer such as a compound of the formula: ##STR1##