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:
Jul. 02, 2002
Filed:
Aug. 17, 2000
Applicant:
Inventors:
Stephen Richard Nelson, Edmond, OK (US);
Gregory Robert Feegle, Oklahoma City, OK (US);
Assignee:
Kerr-McGee Corporation, Oklahoma City, OK (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B09C 1/06 ; E21B 4/312 ; E21B 4/324 ; E21B 4/3243 ;
U.S. Cl.
CPC ...
B09C 1/06 ; E21B 4/312 ; E21B 4/324 ; E21B 4/3243 ;
Abstract
Methods of extracting liquid hydrocarbon contaminants from underground zones are provided. The methods are basically comprised of the steps of introducing a hot purge gas into an underground zone containing a pool of liquid hydrocarbon contaminants whereby light liquid hydrocarbons in and around the pool are evaporated and dense liquid hydrocarbons in the pool are evaporated to some extent, charred, auto-ignited and combusted, and removing the hot purge gas, the evaporated light liquid hydrocarbons and combustion gases from the combustion of the dense liquid hydrocarbons in the zone.