A method for identifying the location of the extent of travel of a combustion front following an in situ oil recovery operation employs a source of seismic energy and at least one seismic receiver for detecting seismic reflection signals from boundaries between subterranean formations on either side...http://www.google.de/patents/US4577690?utm_source=gb-gplus-sharePatent US4577690 - Method of using seismic data to monitor firefloods
