IN SITU HYDROCARBON RECOVERY WITH INJECTION OF FLUID INTO IHS AND UPPER PAY ZONE VIA VERTICAL WELL

摘要

There is provided a method for recovering hydrocarbons from a reservoir having a main pay zone and overlying inclined heterolithic strata (IHS). The method includes operating a steam-assisted gravity drainage well pair in the main pay zone to form a steam chamber and produce hydrocarbons from the main pay zone, the steam chamber extending upward within the main pay zone toward the IHS. The method also includes providing a well extending from the surface into the IHS and a top region of the main pay zone; and injecting a non-condensable gas (NCG) via the well through the perforations into the IHS, to form an NCG- enriched zone in the IHS.