METHOD FOR ASSISTED RECOVERY OF HEAVY HYDROCARBONS FROM FORWARD-WELL SUBTERRANEAN FORMATION HAVING A SUBSTANTIALLY HORIZONTAL ZONE PORTION

摘要

The present invention relates to a process for the enhanced recovery of heavy hydrocarbons from an underground formation 1 per drilled well 11, 12, 13, 21, 22, 23 with a substantially horizontal zone. The drilled wells have from the ground surface a substantially vertical initial portion followed by an inclined or horizontal portion extending into the formation consisting of reservoirs 2, 3, 4 of said hydrocarbons. / P P Training consisting of at least two tanks 2, 3, 4 superimposed separated by walls 5, 6 the horizontal portion of a first well 11, 13, 22 extending into a reservoir substantially vertically above the horizontal portion d a second well 12, 21, 23 located in an immediately adjacent reservoir, using said first well as a steam injection well and said second well as a producing well.